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Webb 101: 10 Facts about the James Webb Space Telescope

Did you know…?

1. Our upcoming James Webb Space Telescope will act like a powerful time machine – because it will capture light that’s been traveling across space for as long as 13.5 billion years, when the first stars and galaxies were formed out of the darkness of the early universe.

2. Webb will be able to see infrared light. This is light that is just outside the visible spectrum, and just outside of what we can see with our human eyes.

3. Webb’s unprecedented sensitivity to infrared light will help astronomers to compare the faintest, earliest galaxies to today's grand spirals and ellipticals, helping us to understand how galaxies assemble over billions of years.

Hubble’s infrared look at the Horsehead Nebula. Credit: NASA/ESA/Hubble Heritage Team

4. Webb will be able to see right through and into massive clouds of dust that are opaque to visible-light observatories like the Hubble Space Telescope. Inside those clouds are where stars and planetary systems are born.

5. In addition to seeing things inside our own solar system, Webb will tell us more about the atmospheres of planets orbiting other stars, and perhaps even find the building blocks of life elsewhere in the universe.

Credit: Northrop Grumman

6. Webb will orbit the Sun a million miles away from Earth, at the place called the second Lagrange point. (L2 is four times further away than the moon!)

7. To preserve Webb’s heat sensitive vision, it has a ‘sunshield’ that’s the size of a tennis court; it gives the telescope the equivalent of SPF protection of 1 million! The sunshield also reduces the temperature between the hot and cold side of the spacecraft by almost 600 degrees Fahrenheit.

8.  Webb’s 18-segment primary mirror is over 6 times bigger in area than Hubble's and will be ~100x more powerful. (How big is it? 6.5 meters in diameter.)

9.  Webb’s 18 primary mirror segments can each be individually adjusted to work as one massive mirror. They’re covered with a golf ball's worth of gold, which optimizes them for reflecting infrared light (the coating is so thin that a human hair is 1,000 times thicker!).

10. Webb will be so sensitive, it could detect the heat signature of a bumblebee at the distance of the moon, and can see details the size of a US penny at the distance of about 40 km.

BONUS!  Over 1,200 scientists, engineers and technicians from 14 countries (and more than 27 U.S. states) have taken part in designing and building Webb. The entire project is a joint mission between NASA and the European and Canadian Space Agencies. The telescope part of the observatory was assembled in the world’s largest cleanroom at our Goddard Space Flight Center in Maryland.

Webb is currently at Northrop Grumman where the telescope will be mated with the spacecraft and undergo final testing. Once complete, Webb will be packed up and be transported via boat to its launch site in French Guiana, where a European Space Agency Ariane 5 rocket will take it into space.

Learn more about the James Webb Space Telescope HERE, or follow the mission on Facebook, Twitter and Instagram.

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7 Things You Need to Know About Small Satellites

1. Small satellites is the umbrella term for describing any satellite that is the size of an economy-sized washing machine all the way down to a CubeSat, which you can hold in your hand.

2. CubeSats come in multiple sizes defined by the U, which stands for unit. Making it the Unit unit. 1U CubeSats are cubes 4 inches (10 cm) on a side, weighing as little as 4 pounds. A 3U CubeSat is three 1Us hooked together, resembling a flying loaf of bread. A 6U CubeSat is two 3Us joined at the hip, like a flying cereal box. These are the three most common configurations.

Photo courtesy of the University of Michigan 

3. CubeSats were developed by researchers at California Polytechnic State University and Stanford University who wanted a standardized format to make launching them into space easier and to be small enough for students to get involved in designing, building and launching a satellite.

4. Small satellites often hitch a ride to space with another mission. If there’s room on the rocket of a larger mission, they’re in. CubeSats in particular deploy from a p-pod – poly-picosatellite orbital deployer – tucked on the underside of the upper stage of the rocket near the engine bell.

5. Small sats test technology at lower costs. Their small size and the relatively short amount of time it takes to design and build a small satellite means that if we want to test a new sensor component or a new way of making an observation from space, we can do so without being in the hole if it doesn’t work out. There’s no environment on Earth than can adequately recreate space, so sometimes the only way to know if new ideas work is to send them up and see.

6. Small sats force us to think of new ways to approach old problems. With a satellite the size of a loaf of bread, a cereal box, or a microwave oven, we don’t have a lot of room for the science instrument or power to run it. That means thinking outside the box. In addition to new and creative designs that include tape measures, customized camera lenses, and other off-the-shelf parts, we have to think of new ways of gathering all the data we need. One thing we’re trying out is flying small sat constellations – a bunch of the same kind of satellite flying in formation. Individually, each small sat sees a small slice of Earth below. Put them together and we start to see the big picture.

7. Small sats won’t replace big satellites. Size does matter when it comes to power, data storage, and how precise your satellite instrument is. Small satellites come with trade-offs that often mean coarser image resolution and shorter life-spans than their bigger sister satellites. However, small sat data can complement data collected by big satellites by covering more ground, by passing over more frequently, by flying in more dangerous orbits that big satellites avoid, and by continuing data records if there’s a malfunction or a wait between major satellite missions. Together they give us a more complete view of our changing planet.

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All aboard for the International Space Station!

Before research can get on a rocket to head to space, it is carefully prepared at Kennedy Space Center.

Scientists sometimes spend days, or even weeks, doing all of the last-minute preparations to get their investigation ready for microgravity.

This week on NASA Explorers, we follow a team of researchers in the final days before their experiment gets loaded into a SpaceX Dragon capsule that will carry their research to the space station.

Watch episode 4 here! 

Follow NASA Explorers on Facebook to catch new episodes of season 4 every Wednesday!

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What extra-curricular activities do you suggest to make the most of our time in high school for a job in NASA?

There are so many great things to get into. I regret that I worked mostly in high school and didn’t spend more time in extracurricular activities. If I could go back, I would be more active in sports because that helps with learning about teamwork and keeps you fit. Lastly, I would get involved on an academic team to keep your brain fit.

Solar System: Things to Know This Week

Reaching out into space yields benefits on Earth. Many of these have practical applications — but there's something more than that. Call it inspiration, perhaps, what photographer Ansel Adams referred to as nature's "endless prospect of magic and wonder." 

Our ongoing exploration of the solar system has yielded more than a few magical images. Why not keep some of them close by to inspire your own explorations? This week, we offer 10 planetary photos suitable for wallpapers on your desktop or phone. Find many more in our galleries. These images were the result of audacious expeditions into deep space; as author Edward Abbey said, "May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view."

1. Martian Selfie

This self-portrait of NASA's Curiosity Mars rover shows the robotic geologist in the "Murray Buttes" area on lower Mount Sharp. Key features on the skyline of this panorama are the dark mesa called "M12" to the left of the rover's mast and pale, upper Mount Sharp to the right of the mast. The top of M12 stands about 23 feet (7 meters) above the base of the sloping piles of rocks just behind Curiosity. The scene combines approximately 60 images taken by the Mars Hand Lens Imager, or MAHLI, camera at the end of the rover's robotic arm. Most of the component images were taken on September 17, 2016.

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2. The Colors of Pluto

NASA's New Horizons spacecraft captured this high-resolution, enhanced color view of Pluto on July 14, 2015. The image combines blue, red and infrared images taken by the Ralph/Multispectral Visual Imaging Camera (MVIC). Pluto's surface sports a remarkable range of subtle colors, enhanced in this view to a rainbow of pale blues, yellows, oranges, and deep reds. Many landforms have their own distinct colors, telling a complex geological and climatological story that scientists have only just begun to decode.

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3. The Day the Earth Smiled

On July 19, 2013, in an event celebrated the world over, our Cassini spacecraft slipped into Saturn's shadow and turned to image the planet, seven of its moons, its inner rings — and, in the background, our home planet, Earth. This mosaic is special as it marks the third time our home planet was imaged from the outer solar system; the second time it was imaged by Cassini from Saturn's orbit, the first time ever that inhabitants of Earth were made aware in advance that their photo would be taken from such a great distance.

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4. Looking Back

Before leaving the Pluto system forever, New Horizons turned back to see Pluto backlit by the sun. The small world's haze layer shows its blue color in this picture. The high-altitude haze is thought to be similar in nature to that seen at Saturn's moon Titan. The source of both hazes likely involves sunlight-initiated chemical reactions of nitrogen and methane, leading to relatively small, soot-like particles called tholins. This image was generated by combining information from blue, red and near-infrared images to closely replicate the color a human eye would perceive.

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5. Catching Its Own Tail

A huge storm churning through the atmosphere in Saturn's northern hemisphere overtakes itself as it encircles the planet in this true-color view from Cassini. This picture, captured on February 25, 2011, was taken about 12 weeks after the storm began, and the clouds by this time had formed a tail that wrapped around the planet. The storm is a prodigious source of radio noise, which comes from lightning deep within the planet's atmosphere.

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6. The Great Red Spot

Another massive storm, this time on Jupiter, as seen in this dramatic close-up by Voyager 1 in 1979. The Great Red Spot is much larger than the entire Earth.

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7. More Stormy Weather

Jupiter is still just as stormy today, as seen in this recent view from NASA's Juno spacecraft, when it soared directly over Jupiter's south pole on February 2, 2017, from an altitude of about 62,800 miles (101,000 kilometers) above the cloud tops. From this unique vantage point we see the terminator (where day meets night) cutting across the Jovian south polar region's restless, marbled atmosphere with the south pole itself approximately in the center of that border. This image was processed by citizen scientist John Landino. This enhanced color version highlights the bright high clouds and numerous meandering oval storms.

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8. X-Ray Vision

X-rays stream off the sun in this image showing observations from by our Nuclear Spectroscopic Telescope Array, or NuSTAR, overlaid on a picture taken by our Solar Dynamics Observatory (SDO). The NuSTAR data, seen in green and blue, reveal solar high-energy emission. The high-energy X-rays come from gas heated to above 3 million degrees. The red channel represents ultraviolet light captured by SDO, and shows the presence of lower-temperature material in the solar atmosphere at 1 million degrees.

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9. One Space Robot Photographs Another

This image from NASA's Mars Reconnaissance Orbiter shows Victoria crater, near the equator of Mars. The crater is approximately half a mile (800 meters) in diameter. It has a distinctive scalloped shape to its rim, caused by erosion and downhill movement of crater wall material. Since January 2004, the Mars Exploration Rover Opportunity has been operating in the region where Victoria crater is found. Five days before this image was taken in October 2006, Opportunity arrived at the rim of the crater after a drive of more than over 5 miles (9 kilometers). The rover can be seen in this image, as a dot at roughly the "ten o'clock" position along the rim of the crater. (You can zoom in on the full-resolution version here.)

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10. Night Lights

Last, but far from least, is this remarkable new view of our home planet. Last week, we released new global maps of Earth at night, providing the clearest yet composite view of the patterns of human settlement across our planet. This composite image, one of three new full-hemisphere views, provides a view of the Americas at night from the NASA-NOAA Suomi-NPP satellite. The clouds and sun glint — added here for aesthetic effect — are derived from MODIS instrument land surface and cloud cover products.

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Americas at night

Discover more lists of 10 things to know about our solar system HERE.

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Exploring the Invisible: Magnetic Reconnection

People always say that space is a vacuum. That’s true – space is about a thousand times emptier than even the best laboratory vacuums on Earth. Even so, space contains lots of stuff we can’t see. We study this invisible space stuff because we need to understand it to safely send technology and astronauts into space.

The stuff that fills space is mostly plasma, which is gas where particles have separated into positive ions and negative electrons, creating a sea of electrically-charged particles. This plasma also contains something else – magnetic fields.

The particles in space can reach very high speeds, creating radiation. One of the main engines that drives that acceleration to high speeds is called magnetic reconnection. But what is magnetic reconnection?

Magnetic reconnection happens when two oppositely-aligned magnetic fields pinch together and explosively realign. As the lines snap into their new configuration – as in the animation below – the sudden change sends electrons and ions flying at incredible speeds.

Magnetic reconnection releases energy. We can't see the energy itself, but we can see the results: It can set off solar explosions – such as solar flares and coronal mass ejections – or disturbances near Earth that cause auroras.

In March 2015, we launched the four Magnetospheric Multiscale, or MMS, spacecraft on a mission to study magnetic reconnection. Magnetic reconnection only happens in a vacuum with ionized gas. These conditions are vanishingly rare on Earth, so we went to space to study this explosive process.

Because MMS has four separate – but essentially identical – spacecraft, it can watch magnetic reconnection in three dimensions.

The below animation shows what MMS sees – the magnetic fields are magenta, positive ions are purple, and electrons are yellow. The arrows show which the direction the fields and particles are moving.

Like how a research plane flies through a hurricane, MMS flew directly through a magnetic reconnection event in October 2015.

In the data visualization below, you can see the magnetic reconnection happening as the yellow arrows (which represent electrons) explode in all directions. You’ll notice that the magnetic field (represented by magenta arrows) changes direction after the magnetic reconnection, showing that the magnetic field has reconfigured.

Magnetic reconnection transfers energy into Earth’s atmosphere – but it’s not inherently dangerous. Sometimes, the changes in Earth’s magnetic field caused by magnetic reconnection can create electric currents that put a strain on power systems. However, the energy released is more often channeled into auroras, the multicolored lights that most often appear near the North and South Poles.

As the MMS mission continues the four spacecraft can be moved closer together or farther apart, letting us measure magnetic reconnection on all different scales. Each set of observations contributes to explaining different aspects of this invisible phenomenon of magnetic reconnection. Together, the information will help scientists better map out our space environment — crucial information as we journey ever farther beyond our home planet.

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Capturing Space Stories, One Click at a Time!

It’s World Photography Day!

To celebrate the occasion, we’re sharing photos from our photographers that chronicle what's making news across the agency - from launches and landings to important science announcements to images taken from the vantage point of space.

Take a look!

A Closer View of the Moon 

Posted to Twitter by European Space Agency astronaut Alexander Gerst, this image shows our planet's Moon as seen from the International Space Station. As he said in the tweet, "By orbiting the Earth almost 16 times per day, the #ISS crew travel the distance to the Moon and back – every day. #Horizons"

The International Space Station is the world's only orbital laboratory. An international partnership of space agencies provides and operates the elements of the station. The principals are the space agencies of the United States, Russia, Europe, Japan and Canada.

Photo Credit: NASA

Spacewalk Selfie

NASA astronaut Ricky Arnold took this selfie during the May 16, 2018, spacewalk to perform upgrades on the International Space Station, saying in a tweet "An amazing view of our one and only planet."

Arnold and fellow spacewalker Drew Feustel donned spacesuits and worked for more than six hours outside the station to finish upgrading cooling system hardware and install new and updated communications equipment for future dockings of commercial crew spacecraft.

Photo Credit: NASA

Preparing to Leave Earth

The mobile service tower at Space Launch Complex-3 is rolled back to reveal the United Launch Alliance Atlas-V rocket with NASA’s InSight spacecraft onboard, Friday, May 4, 2018, at Vandenberg Air Force Base in California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. 

Photo Credit: NASA/Bill Ingalls

Launch Long Exposure

The United Launch Alliance Delta IV Heavy rocket is seen in this long exposure photograph as it launches NASA's Parker Solar Probe to touch the Sun, Sunday, Aug. 12, 2018 from Launch Complex 37 at Cape Canaveral Air Force Station, Florida. Parker Solar Probe is humanity’s first-ever mission into a part of the Sun’s atmosphere called the corona.  Here it will directly explore solar processes that are key to understanding and forecasting space weather events that can impact life on Earth.

Photo Credit: NASA/Bill Ingalls

Waving Farewell

Expedition 56 flight engineer Serena Auñón-Chancellor of NASA waves farewell to family and friends as she and Soyuz Commander Sergey Prokopyev of Roscosmos and flight engineer Alexander Gerst of European Space Agency depart Building 254 for the launch pad a few hours before their launch, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Auñón-Chancellor, Prokopyev, and Gerst launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station.

Photo Credit: NASA/Victor Zelentsov

Launching Humans to Space

The Soyuz MS-09 rocket is launched with Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency), Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. Prokopyev, Auñón-Chancellor, and Gerst will spend the next six months living and working aboard the International Space Station. 

Photo Credit: NASA/Joel Kowsky

Rethinking Aircraft Design

In an effort to improve fuel efficiency, NASA and the aircraft industry are rethinking aircraft design. Inside the 8’ x 6’ wind tunnel at NASA Glenn Research Center, engineers tested a fan and inlet design, commonly called a propulsor, which could use four to eight percent less fuel than today’s advanced aircraft.

Photo Credit: NASA/Rami Daud

Flying Observatory

SOFIA, the Stratospheric Observatory for Infrared Astronomy, is the largest airborne observatory in the world, capable of making observations that are impossible for even the largest and highest ground-based telescopes. During its lifetime, SOFIA also will inspire the development of new scientific instrumentation and foster the education of young scientists and engineers.

Photo Credit: NASA/SOFIA/Waynne Williams

Experimenting with Venus-like conditions

A close-up view of crystals that developed on materials exposed to conditions on Venus in NASA Glenn’s Extreme Environments Rig. This unique and world class ground-based test rig can accurately most simulate atmospheric conditions for any planet or moon in the solar system and beyond.

Photo Credit: NASA/Bridget Caswell

Honeycomb Close Up

A close-up view of 3-D printed honeycomb patterns made in NASA Glenn manufacturing lab using a method called binder jetting. The honeycomb structures can find use in several applications such as a strong core for lightweight sandwich panels, acoustic panels for noise attenuation and innovative cellular structures.

Photo Credit: NASA/Marvin Smith

To see even more photos of our space exploration efforts, visit us on Flickr: https://www.flickr.com/photos/nasahqphoto/.

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Observing the Ozone Hole from Space: A Science Success Story

Using our unique ability to view Earth from space, we are working together with NOAA to monitor an emerging success story – the shrinking ozone hole over Antarctica.

Thirty years ago, the nations of the world agreed to the landmark ‘Montreal Protocol on Substances that Deplete the Ozone Layer.’ The Protocol limited the release of ozone-depleting chlorofluorocarbons (CFCs) into the atmosphere.

Since the 1960s our scientists have worked with NOAA researchers to study the ozone layer. 

We use a combination of satellite, aircraft and balloon measurements of the atmosphere.

The ozone layer acts like a sunscreen for Earth, blocking harmful ultraviolet, or UV, rays emitted by the Sun.

In 1985, scientists first reported a hole forming in the ozone layer over Antarctica. It formed over Antarctica because the Earth’s atmospheric circulation traps air over Antarctica.  This air contains chlorine released from the CFCs and thus it rapidly depletes the ozone.

Because colder temperatures speed up the process of CFCs breaking up and releasing chlorine more quickly, the ozone hole fluctuates with temperature. The hole shrinks during the warmer summer months and grows larger during the southern winter. In September 2006, the ozone hole reached a record large extent.

But things have been improving in the 30 years since the Montreal Protocol. Thanks to the agreement, the concentration of CFCs in the atmosphere has been decreasing, and the ozone hole maximum has been smaller since 2006’s record.

That being said, the ozone hole still exists and fluctuates depending on temperature because CFCs have very long lifetimes. So, they still exist in our atmosphere and continue to deplete the ozone layer.

To get a view of what the ozone hole would have looked like if the world had not come to the agreement to limit CFCs, our scientists developed computer models. These show that by 2065, much of Earth would have had almost no ozone layer at all.

Luckily, the Montreal Protocol exists, and we’ve managed to save our protective ozone layer. Looking into the future, our scientists project that by 2065, the ozone hole will have returned to the same size it was thirty years ago.

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What are the most important skills an astronaut should have m?

First of all, the basic requirement is a bachelor’s degree in a STEM field, and 3 years of experience (which can also be substituted for by an advanced degree). Other than that, operational experience (things with a technical/active/hands on nature like flying airplanes, SCUBA diving, taking things apart and putting them back together, basic fix-it skills, etc. etc.) is very important, as this is an integral aspect of every day of a space mission.  What we call “expeditionary skills” are also essential, basically the types of things you try to instill in your children, like how to play nicely with others, self care, team care, etc.  I like to think about this on the lines of a camping trip and who you would like to have along with you . . .someone that is competent and can take good care of themselves and their equipment, someone that contributes to the team and helps with group tasks, someone that is good natured and pleasant to be around, etc., someone fun!  These things are increasingly important now that we are regularly doing long duration missions (typical International Space Station mission is 6 months).  Experience living in extreme/remote/isolated environments with small teams is also useful, as it is similar to what we experience as astronauts.     

Super Blood Moon Photo Contest

This Sunday, Sept. 27 a Super Blood Moon will be visible in the U.S. and much of the world. This is the first time in more than 30 years that you’ll be able to witness a supermoon in combination with a lunar eclipse!

What is a supermoon? It’s a new or full moon that occurs when it is at, or near its closest approach to Earth. This event, combined with Earth’s shadow slowly swallowing the moon during the lunar eclipse, will provide for a spectacular night.

To make this lunar event even more exciting (not that it really needed it), we will be hosting a photo contest! During the event, we invite you to send us your best image of the Super Blood Moon on our Facebook page. Enter HERE.

After the entry window is closed, six finalists will be selected. These finalists will have their image voted on by the public. The winning image will be featured on our official social media platforms and on NASA.gov.

Are you interested? Here are the details:

Contest Entry Opens: Sept. 27 at 10:00 p.m. EDT

Contest Entry Closes: Sept. 28 at 10:00 a.m. EDT

Voting on Finalists Opens: Sept. 28 3:00 p.m. EDT

Voting on Finalists Closes: Sept. 29 11:59 p.m. EDT

For more information and specifics about the lunar event, visit our page on NASA.gov, and make sure that this Sunday, Sept. 27, you get outside, look up and take some awesome pictures!

ENTER HERE: http://go.nasa.gov/superbloodmoon-contest

Full Terms and Conditions can be found HERE.

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