Our Sun powers life on Earth. It defines our days, nourishes our crops and even fuels our electrical grids. In our pursuit of knowledge about the universe, we’ve learned so much about the Sun, but in many ways we’re still in conversation with it, curious about its mysteries.
Parker Solar Probe will advance this conversation, flying through the Sun’s atmosphere as close as 3.8 million miles from our star’s surface, more than seven times closer to it than any previous spacecraft. If space were a football field, with Earth at one end and the Sun at the other, Parker would be at the four-yard line, just steps away from the Sun! This journey will revolutionize our understanding of the Sun, its surface and solar winds.
Supporting Parker on its journey to the Sun are our communications networks. Three networks, the Near Earth Network, the Space Network and the Deep Space Network, provide our spacecraft with their communications, delivering their data to mission operations centers. Their services ensure that missions like Parker have communications support from launch through the mission.
For Parker’s launch on Aug. 12, the Delta IV Heavy rocket that sent Parker skyward relied on the Space Network. A team at Goddard Space Flight Center’s Networks Integration Center monitored the launch, ensuring that we maintained tracking and communications data between the rocket and the ground. This data is vital, allowing engineers to make certain that Parker stays on the right path towards its orbit around the Sun.
The Space Network’s constellation of Tracking and Data Relay Satellites (TDRS) enabled constant communications coverage for the rocket as Parker made its way out of Earth’s atmosphere. These satellites fly in geosynchronous orbit, circling Earth in step with its rotation, relaying data from spacecraft at lower altitudes to the ground. The network’s three collections of TDRS over the Atlantic, Pacific and Indian oceans provide enough coverage for continuous communications for satellites in low-Earth orbit.
The Near Earth Network’s Launch Communications Segment tracked early stages of Parker's launch, testing our brand new ground stations’ ability to provide crucial information about the rocket’s initial velocity (speed) and trajectory (path). When fully operational, it will support launches from the Kennedy spaceport, including upcoming Orion missions. The Launch Communications Segment’s three ground stations are located at Kennedy Space Center; Ponce De Leon, Florida; and Bermuda.
When Parker separated from the Delta IV Heavy, the Deep Space Network took over. Antennas up to 230 feet in diameter at ground stations in California, Australia and Spain are supporting Parker for its 24 orbits around the Sun and the seven Venus flybys that gradually shrink its orbit, bringing it closer and closer to the Sun. The Deep Space Network is delivering data to mission operations centers and will continue to do so as long as Parker is operational.
Near the Sun, radio interference and the heat load on the spacecraft’s antenna makes communicating with Parker a challenge that we must plan for. Parker has three distinct communications phases, each corresponding to a different part of its orbit.
When Parker comes closest to the Sun, the spacecraft will emit a beacon tone that tells engineers on the ground about its health and status, but there will be very little opportunity to command the spacecraft and downlink data. High data rate transmission will only occur during a portion of Parker’s orbit, far from the Sun. The rest of the time, Parker will be in cruise mode, taking measurements and being commanded through a low data rate connection with Earth.
Communications infrastructure is vital to any mission. As Parker journeys ever closer to the center of our solar system, each byte of downlinked data will provide new insight into our Sun. It’s a mission that continues a conversation between us and our star that has lasted many millions of years and will continue for many millions more.
For more information about NASA’s mission to touch the Sun: https://www.nasa.gov/content/goddard/parker-solar-probe
For more information about our satellite communications check out: http://nasa.gov/SCaN
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After an academic career at U.C. Riverside and Caltech, Chris Birch became a track cyclist on the U.S. National Team. She was training for the 2020 Olympics when she was chosen as an astronaut candidate. https://go.nasa.gov/49WJKHj
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He was selected as a NASA astronaut in July 2009, and is currently living and working in space for his first time. As you can imagine, going to space for the first time is both nerve-wracking and exciting. You may or may not know just how excited he actually is to be 250 miles above the Earth...To communicate his elation, he has frequently used some version of the word “awesome”.
FYI, that’s a picture of Fischer about to eat a coffee ball on station. For more on his opinion of coffee balls, check THIS out.
Immediately following the hatch opening to the International Space Station and Jack Fischer arriving at his new orbital home, they had the chance to speak to their families. During this time, he explained to his wife what it was like to be in space...obviously using the word awesome in the process: “It’s a burrito of awesomeness, smothered in awesomesauce baby, it’s so beautiful!”
Astronauts commonly say that one of the best parts of being on space station is the view. Earth from 250 miles above can look stunning...or as Fischer puts it...awesome!
Fischer shared this video on his Twitter account on May 6 saying, “Sometimes, on a weekend, you have to spin about wildly…we can call it a tornado of awesomeness—because weightlessness is awesome!”
This selfie, taken during Fischer’s first-ever spacewalk is AWESOME and shows his cheesing smile from behind his spacesuit helmet. Check out a recap of Fischer’s first spacewalk, conducted on May 12, HERE.
In this video, also taken during Fischer’s first spacewalk on May 12, you can hear his real-time reaction to seeing the Earth from outside the space station. Describing it like a “Ginormous fondue pot, bubbling over with piping hot awesomesauce.”
You might be wondering where all this burrito talk comes from. In a pre-flight interview, Fischer explained that he doesn’t particularly like sweets...so for his birthday, his wife will commonly make him bean burritos smothered in green chili and cheese! Watch the full video for 5 facts you may not know about Fischer HERE.
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These tips are meant for a DSLR or mirrorless camera, but some point-and-shoot cameras with manual controls could be used as well.
The Perseids are dusty remnants of comet 109P/Swift-Tuttle.
Earth passes through the comet’s invisible, multi-billion mile trail of tiny debris each year around August, creating a meteor shower of so-called “shooting stars” as the particles are vaporized in our atmosphere.
Perseid meteors already are streaking across the sky. This year's shower peaks on a moonless summer night -from 4 pm on the 12th until 4 am on the 13th Eastern Daylight Time.
Read more on the Perseids ›
In this 30 second exposure, a meteor streaks across the sky in Spruce Knob, West Virginia, during the 2016 Perseids meteor shower. Credit: NASA/Bill Ingalls
Too much light and it will be hard for your eyes to see fainter meteors, plus your image will get flooded with the glow of light. Turning down the brightness of the camera’s LCD screen will help keep your eyes adjusted to the dark. The peak of the 2018 Perseid meteor shower occurs just after the new moon, meaning a thin crescent will set long before the best viewing hours, leaving hopeful sky watchers with a moonlight-free sky!
In this ten-second exposure, a meteor streaks across the sky above Washington, DC during the 2015 Perseids meteor shower, Credit: NASA/Joel Kowsky
Meteor photography requires long exposures, and even the steadiest of hands can’t hold a camera still enough for a clear shot. Heavier tripods help reduce shaking caused by wind and footsteps, but even a lightweight tripod will do. You can always place sandbags against the feet of the tripod to add weight and stability. If you don’t have a tripod, you might be able to prop your camera on or up against something around you, but be sure to secure your camera.
In this 30 second exposure taken with a circular fish-eye lens, a meteor streaks across the sky during the 2016 Perseids meteor shower as a photographer wipes moisture from the camera lens Friday, August 12, 2016 in Spruce Knob, West Virginia. Credit: NASA/Bill Ingalls
A wide-angle lens will capture more of the sky and give you a greater chance of capturing a meteor in your shot, while a zoom lens captures a smaller area of the sky. The odds of a meteor streaking past that small patch are lower.
Long exposures are not just for meteors. In this shot taken at Joshua Tree National Park, a hiker's headlamp leaves a trail of light along a twilight path. Credit: National Park Service / Hannah Schwalbe
A tripod does a great job of reducing most of the shaking your camera experiences, but even the act of pressing the shutter button can blur your extended exposure. Using the self-timer gives you several seconds for any shaking from pressing the shutter button to stop before the shutter is released. A shutter release cable (without a self-timer) eliminates the need to touch the camera at all. And if your camera has wifi capabilities, you might be able to activate the shutter from a mobile device.
In this 30 second exposure, a meteor streaks across the sky during the annual Perseids meteor shower Friday, August 12, 2016 in Spruce Knob, West Virginia. Credit: NASA/Bill Ingalls
At night, autofocus will struggle to find something on which to focus. Setting your focus to infinity will get you close, but chances are you’ll have to take some test images and do some fine tuning. With your camera on a tripod, take a test image lasting a few seconds, then use the camera’s screen to review the image. Zoom in to a star to see how sharp your focus is. If the stars look like fuzzy blobs, make tiny adjustments to the focus and take another test image.
Repeat until you are happy with the result.
If your camera has a zoomable electronic viewfinder or live view option, you might be able to zoom to a star and focus without having to take a test image.
The Perseids appear to radiate from the constellation Perseus, visible in the northern sky soon after sunset this time of year.
Even though we don’t know when or where a single meteor will appear, we do know the general area from which they’ll originate.
Meteor showers get their name based on the point in the sky from which they appear to radiate. In the case of the Perseids, during their peak, they appear to come from the direction of the constellation Perseus in the northern sky.
In this 20-second exposure, a meteor lights up the sky over the top of a mountain ridge near Park City, Utah. Even though this image was captured during the annual Perseid meteor shower, this "shooting star" is probably not one of the Perseid meteors, which originate from material left behind by Comet Swift-Tuttle. Instead, it's likely one of the many bits of rock and dust that randomly fall into the atmosphere on any given night. Credit: NASA/Bill Dunford
As Earth rotates, the stars in the sky appear to move, and if your shutter is open long enough, you might capture some of that movement. If you want to avoid apparent star movement, you can follow the 500 Rule. Take 500 and divide it by the length in millimeters of your lens. The resulting number is the length of time in seconds that you can keep your shutter open before seeing star trails. For example, if you’re using a 20 mm lens, 25 seconds (500 divided by 20) is the longest you can set your exposure time before star trails start to show up in your images.
In this 30 second exposure photo, hikers find their way to the top of Spruce Knob in West Virginia to view the annual Perseids meteor shower, Friday, August 12, 2016. Credit: NASA/Bill Ingalls
Once you know the maximum exposure time, you can set your shutter priority to that length and let the camera calculate other settings for your first image. Depending on how the image turns out, you can manually adjust aperture (set it to a lower number if the image is too dark) and ISO (set it to a higher number if the image is too dark) to improve your next images. Changing only one setting at a time will give you a better understanding of how those changes affect your image.
The crew of the International Space Station captured this Perseid meteor falling to Earth over China in 2011. Credit: NASA
With your camera settings adjusted, capturing that perfect photo is just a matter of time and luck. The highest rate of meteors visible per hour is in the hours after midnight and before dawn. Set up your camera next to a lounge chair or a blanket to witness the wonder of a meteor shower for yourself – and, with any luck, you’ll take home some envy-inducing shots, too!
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The boundary where Earth’s atmosphere gives way to outer space is a complex place: Atmospheric waves driven by weather on Earth compete with electric and magnetic fields that push charged particles, all while our signals and satellites whiz by.
On Jan. 25, we’re launching the GOLD instrument (short for Global-scale Observations of the Limb and Disk) to get an exciting new birds-eye view of this region, Earth’s interface to space.
High above the ozone layer, the Sun’s intense radiation cooks some of the particles in the upper atmosphere into an electrically charged soup, where negatively charged electrons and positively charged ions flow freely. This is the ionosphere. The ionosphere is co-mingled with the highest reaches of our planet’s neutral upper atmosphere, called the thermosphere.
Spanning from just a few dozen to several hundred miles above Earth’s surface, the ionosphere is increasingly part of the human domain. Not only do our satellites, including the International Space Station, fly through this region, but so do the signals that are part of our communications and navigation systems, including GPS. Changes in this region can interfere with satellites and signals alike.
Conditions in the upper atmosphere are difficult to predict, though. Intense weather, like hurricanes, can cause atmospheric waves to propagate all the way up to this region, creating winds that change its very makeup.
Because it’s made up of electrically charged particles, the upper atmosphere also responds to space weather. Space weather – which is usually driven by activity on the Sun – often results in electric and magnetic fields that push and pull on the ionosphere’s charged particles, changing the region’s makeup. On top of that, space weather can also mean incoming showers of high-energy particles that can affect satellites or endanger astronauts, and, in extreme cases, even cause power outages on Earth.
That’s where GOLD comes in. GOLD takes advantage of its host satellite’s geostationary orbit over the Western Hemisphere to maintain a constant view of the upper atmosphere, day and night. By scanning across, GOLD builds up a complete picture of Earth’s disk every half hour.
GOLD is an imaging spectrograph, a type of instrument that breaks light down into its component wavelengths. Studying light in this way lets scientists track the movement and temperatures of different chemical species and build up a picture of how the upper atmosphere changes over time. Capturing these measurements several times a day means that, for the first time, scientists will be able to record the short-term changes in the region -- our first look at its day-to-day ‘weather.’
GOLD is our first-ever mission to fly as a hosted payload on a commercial satellite. A hosted payload flies aboard an otherwise unrelated satellite, hitching a ride to space. GOLD studies the upper atmosphere, while its host satellite supports commercial communications.
Later this year, we’re launching another mission to study the ionosphere: ICON, short for Ionospheric Connection Explorer. Like GOLD, ICON studies Earth’s interface to space, but with a few important distinctions. ICON employs a suite of different instruments to study the ionosphere both remotely and in situ. The direct in situ measurements are possible because ICON flies in low-Earth orbit, giving us a detailed view to complement GOLD’s global perspective of the regions that both missions study.
Arianespace, a commerical aerospace company, is launching GOLD’s host commercial communications satellite, SES-14, for SES from Kourou, French Guiana.
We’ll be streaming the launch live on NASA TV! You can also follow along on Twitter (@NASA and @NASASun), Facebook (NASA and NASA Sun Science), Instagram, and on our Snapchat (NASA).
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If you were captivated by August's total solar eclipse, there's another sky show to look forward to on Jan. 31: a total lunar eclipse!
Below are 10 things to know about this astronomical event, including where to see it, why it turns the Moon into a deep red color and more...
1. First things first. What's the difference between solar and lunar eclipses? We've got the quick and easy explanation in this video:
2. Location, location, location. What you see will depend on where you are. The total lunar eclipse will favor the western U.S., Alaska, Hawaii, and British Columbia on Jan. 31. Australia and the Pacific Ocean are also well placed to see a major portion of the eclipse, if not all of it.
3. Color play. So, why does the Moon turn red during a lunar eclipse? Here's your answer:
4. Scientists, stand by. What science can be done during a lunar eclipse? Find out HERE.
5. Show and tell. What would Earth look like from the Moon during a lunar eclipse? See for yourself with this artist's concept HERE.
6. Ask me anything. Mark your calendars to learn more about the Moon during our our Reddit AMA happening Monday, Jan. 29, from 3-4 pm EST/12-1 pm PST.
7. Social cues. Make sure to follow @NASAMoon and @LRO_NASA for all of the latest Moon news leading up to the eclipse and beyond.
8. Watch year-round. Can't get enough of observing the Moon? Make a DIY Moon Phases Calendar and Calculator that will keep all of the dates and times for the year's moon phases right at your fingertips HERE.
Then, jot down notes and record your own illustrations of the Moon with a Moon observation journal, available to download and print from moon.nasa.gov.
9. Lesson learned. For educators, pique your students' curiosities about the lunar eclipse with this Teachable Moment HERE.
10. Coming attraction. There will be one more lunar eclipse this year on July 27, 2018. But you might need your passport—it will only be visible from central Africa and central Asia. The next lunar eclipse that can be seen all over the U.S. will be on Jan. 21, 2019. It won't be a blue moon, but it will be a supermoon.
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What's the weirdest part of your job? How does a typical work day for you looks like?
How many connections does America’s space program have with the fictional world of Star Wars? More than you might think…
Join us as we highlight a few of the real-world TIE-ins between us and Star Wars:
Lasers in space sounds like something straight out of Star Wars, but it’s also a reality for us. Our own GEDI (yes, like Jedi) instrument will launch later this year to the International Space Station.
GEDI stands for the Global Ecosystem Dynamics Investigation lidar. It will study the height of trees and forests, using three lasers split into eight tracks, and create a 3D map of forests around the planet.
With GEDI’s new tree maps, we’ll get a better understanding of how much carbon is stored in forests all over Earth, and how forests will be able to absorb increasing carbon dioxide in the atmosphere.
The Jedi knights may help protect a galaxy far, far away, but our GEDI will help us study and understand forest changes right here on Earth.
There’s another Jedi in town and it happens to be orbiting the planet Jupiter. Our Juno spacecraft, which arrived at the gas giant in July 2016, has an instrument on board that goes by the name of JEDI - the Jupiter Energetic Particle Detector Instrument.
While it doesn’t use a light saber or channel “the force”, it does measure high-energy particles near Jupiter. Data collected with the JEDI instrument will help us understand how the energy of Jupiter’s rotation is being funneled into its atmosphere and magnetosphere.
We know what you’re thinking...”That’s no moon.” But actually, it is! This is a real picture taken by our Cassini spacecraft of Saturn’s moon Mimas. In this view taken on Cassini’s closest-ever flyby of Mimas, the large Herschel Crater dominates, making the moon look like the Death Star. Herschel Crater is 130 kilometers, or 80 miles, wide and covers most of the right of this image.
We have robots roving and exploring all over the solar system, but it's our own “R2” that's most likely to resonate with Star Wars fans. Robonaut 2, launched in 2011, is working along side humans on board the International Space Station, and may eventually help with spacewalks too dangerous for humans. Incidentally, an earlier version of Robonaut bore a strong “facial” resemblance to enigmatic bounty hunter Boba Fett.
Another "droid" seen on the space station was directly inspired by the saga. In 1999, then Massachusetts Institute of Technology (MIT) professor David Miller, showed the original 1977 Star Wars to his students on their first day of class. After the scene where hero Luke Skywalker learns lightsaber skills by sparring with a floating droid “remotes” on the Millennium Falcon, Miller stood up and pointed: "I want you to build me some of those."
The result was "SPHERES," or Synchronized Position Hold, Engage, Reorient, Experimental Satellites. Originally designed to test spacecraft rendezvous and docking maneuvers, the bowling-ball size mini-satellites can now be powered by smart phones.
When space shuttle Atlantis left the International Space Station after 2007’s STS-117 mission, it caught a view of the station that looked to some like a TIE fighter.
The "TIE-ins" go beyond casual resemblance to real engineering. We already use actual ion engines ("TIE" stands for "Twin Ion Engines") on spacecraft like Dawn, currently orbiting the dwarf planet Ceres. In fact, Dawn goes one better with three ion engines.
Want more Star Wars connections? Check out THIS Tumblr to learn about the REAL planets we’ve found outside our solar system that resemble planets from the movie.
Take THIS quiz to see if you know more about the Milky Way galaxy or a galaxy far, far away.
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I’m sure you’re trained so that nothing in space is really a surprise, but: was there anything about spacewalking that surprised you when you did it for the first time?
Later this month, a SpaceX Falcon Heavy rocket will take to the skies for the third time to launch the Department of Defense’s Space Test Program-2 (STP-2) mission. Several exciting, one-of-a-kind NASA technology and science payloads are among the two-dozen spacecraft aboard.
First, let’s talk about that Falcon Heavy rocket. Its 27 engines generate thrust at liftoff equal to that of approximately 18 airplanes, and it can lift over 140,000 pounds.
Managed by the U.S. Air Force Space and Missile Systems Center, STP-2 is the first government-contracted Falcon Heavy launch. It will reuse the two side boosters recovered after the April flight. SpaceX describes it as one of the most challenging launches in the company’s history.
It’s a big deal to us at NASA because we’re launching some pretty cool technologies. The tech will support our future exploration plans by helping improve future spacecraft design and performance. Here’s a bit about each:
Time is the heartbeat of space navigation. Today, we navigate in deep space by using giant antennas on Earth to send signals to spacecraft, which then send those signals back to Earth. Atomic clocks on Earth measure the time it takes a signal to make this two-way journey. Only then can human navigators on Earth use large antennas to tell the spacecraft where it is and where to go.
Our Jet Propulsion Laboratory has been perfecting an atomic clock fit for exploration missions. The Deep Space Atomic Clock is the first atomic clock designed to fly on a spacecraft destined for beyond Earth's orbit. The timepiece is lighter and smaller—no larger than a toaster oven—than its refrigerator-sized, Earthly counterparts.
This miniaturized clock could enable one-way navigation: a spacecraft receives a signal from Earth and can determine its location immediately using its own, built-in navigation system. Even smaller versions of the clock are being investigated right now that could be used for the growing number of small to mid-size satellites. As we go forward to the Moon with the Artemis program, precise measurements of time are key to mission success.
The Deep Space Atomic Clock is the primary payload onboard the General Atomics Electromagnetic Systems Orbital Test Bed satellite and will perform a year-long demonstration in space.
Two tiny satellites will study how signals can be muddled as they travel through hard-to-predict bubbles in the upper atmosphere. Signals sent from satellites down to Earth (and vice versa) can be disrupted by structured bubbles that sometimes form in Earth's upper atmosphere. Because this region is affected both by weather on Earth and conditions in space, it's hard to predict just when these bubbles will form or how they'll mess with signals.
The E-TBEx CubeSats (short for Enhanced Tandem Beacon Experiment) will try to shed some light on that question. As these little satellites fly around Earth, they'll send radio signals (like the ones used by GPS) to receiving stations on the ground. Scientists will be able to look at the signals received and see if they were jumbled as they traveled through the upper atmosphere down to Earth — which will help us track when these bubbles are forming and how much they're interfering with our signals.
For decades, we have relied on a highly toxic spacecraft fuel called hydrazine. The Green Propellant Infusion Mission (GPIM) will lay the foundation to replace conventional chemical propulsion systems with a safer and more efficient alternative for next-generation spacecraft.
GPIM will demonstrate a new propellant in space for the first time. Concocted by the U.S. Air Force Research Laboratory, this innovative, “green” fuel—which actually has more of a peach hue—is expected to improve overall spacecraft performance due to its higher density, increased thrust and lower freezing point in comparison with hydrazine.
GPIM’s propulsion system, developed by Aerojet Rocketdyne, consists of new compatible tanks, valves and thrusters. During the two-month-long demonstration on a Ball Aerospace spacecraft, engineers will conduct orbital maneuvers to demonstrate the performance of the propellant and propulsion system.
It’s not easy being a spacecraft; invisible, energetic particles zip throughout space — and while there are so few that space is considered a vacuum, what’s there still packs a punch. Tiny particles — like those seen here impacting a detector on a Sun-studying spacecraft — can wreak havoc with the electronics we send up into space.
Space Environment Testbeds — or SET, for short — is a mission to study space radiation and how it affects spacecraft and electronics in orbit. What looks like snow flurries in these animated images, for example, is actually a solar radiation storm of incredibly fast particles, unleashed by a solar eruption. Energetic particles from the Sun or deep space can spark memory damage or computer upsets on spacecraft, and over time, degrade hardware.
By studying radiation effects and different methods to protect satellites, SET will help future missions improve spacecraft design, engineering and operations.
Follow @NASA_Technology and @NASASun on Twitter for news about the STP-2 launch and our missions aboard.
Check out www.nasa.gov/spacex to stay up-to-date on the launch day and time. Don’t forget to tune into our launch coverage, scheduled to start about 30 minutes before liftoff!
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On Dec. 14, 2015, we announced that astronaut applications were open on USAJOBS. The window for applications closed on Feb. 18. We’re happy to announce that we have received more than 18,300 applications from excited individuals from around the country, all hoping to join the 2017 astronaut class. This surpasses the more than 6,100 received in 2012 for the most recent astronaut class, and the previous record - 8,000 applicants in 1978.
Since the applications closed on Feb. 18, many people are curious to know…what’s next? Let us help you navigate the selection process:
Now that we have received all the applications, we will review them to determine the “Highly Qualified” applicants. This process will take place through summer 2016.
The diversity of experiences is what separates the highly qualified from qualified. Experience that demonstrates good leadership, fellowship and decision making are beneficial.
Between fall 2016 and spring 2017, interviewees will be brought to Johnson Space Center for evaluation. This process will help us determine the finalists, which takes place in spring 2017.
Finally, in summer 2017, the Astronaut Candidate Class of 2017 is announced! These candidates will report to Johnson Space Center starting in August 2017.
To view the full astronaut candidate selection process timeline, visit: http://astronauts.nasa.gov/content/timeline.htm
*Note that the high volume of applications received, dates in the timeline could be adjusted.
We are continuing human spaceflight on the International Space Station, which has a continuous crew of six people on board. The Boeing and SpaceX commercial crew spacecraft that will travel to the station both have seats for four astronauts (the current Soyuz spacecraft, on which astronauts travel, only has three). This will add a seventh astronaut to the orbiting laboratory, and enable us to do more science!
The exact number will be determined by mission requirements, but current analysis shows about 8 - 14 astronauts will be needed. The final number will depend on updates to program plans, budgets, etc.
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