NASA is back with newer and better research about life on Mars (at least in the distant pass).
They’re still talking about the same rock that they were in the 90’s. But now they have images like this:
The evidence is still circumstantial – but much stronger.
The stuff that looks like fabric running across the image is a biomorph: an imprint of a structure that doesn’t look geological, so by elimination it was probably produced by life. Basically, it’s a footprint.
NASA showed biomorphs when they made their initial findings public in the 90’s.
There are two things different about this one (and the others in the paper). First, this came from inside the meteorite; they had to crack it to find this. Second, it’s on top of, inside of, and covered by a mineral that formed from Martian water seeping into cracks in the meteorite when it was still part of the Martian crust.
Here’s the evidence, in sum they can show that:
- The rock formed on Mars with cracks.
- Water flowed into the cracks on Mars.
- Something in the water on Mars left an impression that isn’t geological, and that looks like similar impressions found on Earth.
- While still on Mars, water continued to flow into the cracks and sealed that stuff up.
- The rock (a boulder, really) got blasted off of Mars as a result of a meteor impact.
- Millions of years later a fist size piece of it was all that was left after it burned up in the atmosphere.
The second and fourth points are the new ones. The only part that is circumstantial is the italicized word.
You be the judge.