It Absolutely Does!!!!! There Is So Much We Still Don’t Understand! So Much To Be Discovered! So Much

Two Steps Forward in the Search for Life on Mars

We haven’t found aliens but we are a little further along in our search for life on Mars thanks to two recent discoveries from our Curiosity Rover.

We detected organic molecules at the harsh surface of Mars! And what’s important about this is we now have a lot more certainty that there’s organic molecules preserved at the surface of Mars. We didn’t know that before.

One of the discoveries is we found organic molecules just beneath the surface of Mars in 3 billion-year-old sedimentary rocks.

Second, we’ve found seasonal variations in methane levels in the atmosphere over 3 Mars years (nearly 6 Earth years). These two discoveries increase the chances that the record of habitability and potential life has been preserved on the Red Planet despite extremely harsh conditions on the surface.

Both discoveries were made by our chem lab that rides aboard the Curiosity rover on Mars.

Here’s an image from when we installed the SAM lab on the rover. SAM stands for “Sample Analysis at Mars” and SAM did two things on Mars for this discovery.

One - it tested Martian rocks. After the arm selects a sample of pulverized rock, it heats up that sample and sends that gas into the chamber, where the electron stream breaks up the chemicals so they can be analyzed.

What SAM found are fragments of large organic molecules preserved in ancient rocks which we think come from the bottom of an ancient Martian lake. These organic molecules are made up of carbon and hydrogen, and can include other elements like nitrogen and oxygen. That’s a possible indicator of ancient life…although non-biological processes can make organic molecules, too.

The other action SAM did was ‘sniff’ the air.

When it did that, it detected methane in the air. And for the first time, we saw a repeatable pattern of methane in the Martian atmosphere. The methane peaked in the warm, summer months, and then dropped in the cooler, winter months.

On Earth, 90 percent of methane is produced by biology, so we have to consider the possibility that Martian methane could be produced by life under the surface. But it also could be produced by non-biological sources. Right now, we don’t know, so we need to keep studying the Mars!

One of our upcoming Martian missions is the InSight lander. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to give the Red Planet its first thorough checkup since it formed 4.5 billion years ago. It is the first outer space robotic explorer to study in-depth the “inner space” of Mars: its crust, mantle, and core.

Finding methane in the atmosphere and ancient carbon preserved on the surface gives scientists confidence that our Mars 2020 rover and ESA’s (European Space Agency’s) ExoMars rover will find even more organics, both on the surface and in the shallow subsurface.

Read the full release on today’s announcement HERE. 

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.  

did you know that octopi have three hearts and nine brains? They’re very efficient and clever and this one is very cute.

just woke up from one hell of a nightmare i need a distraction…

https://www.instagram.com/p/Bl7-9QZgea_/

Correction: even cooler than we thought!

Apparently Ethiopian Baboons are starting to domesticate wolves, which is giving scientists new insights about what it might have been like when early humans did that. That’s cool pretty cool!

news report: survey says

me: what was the sample size? the distribution? the demographic??? this is meaningless. you could have asks two people in line at starbucks

So I stumbled onto the Etsy shop of this academic who–in real life–is an expert on cuneiform–and on the side, makes little trinkets with Sumerian on them and OH MAN THIS SHOP HAS MADE MY ENTIRE WEEK For the price of about thirty bucks, you too can have a clay necklace that says “Like a farting butt, the mouth brings forth too many words” in the oldest written language on earth https://www.etsy.com/listing/537034173/choose-your-words-carefully-like-a?ref=shop_home_active_23

Or a necklace that declares “I have ferocious features that exude sexiness” https://www.etsy.com/listing/540406774/i-have-ferocious-features-that-exude?ref=shop_home_active_54 Or be the ultimate hipster and anti-capitalist before capitalism even existed with “Wanting more riches when already wealthy offends the gods”  https://www.etsy.com/listing/543598245/wanting-more-riches-when-already-wealthy?ref=shop_home_active_6

Sumerian erotic poetry? Got it. Sumerian drinking songs? Yep. A little something for everyone on your Akitu gift list.

In the mineralogist’s defense, that’s much tidier than trying to eat watermelon on its own.

Also being a scientist pretty much gives you a free pass to be as eccentric as you want like you’ll be at a conference and it’s like “is that guy wearing socks and sandals and plaid pants???” “Ya but he was on the team that discovered gravitational waves let him be”