NASA's Perseverance rover collects Martian soil samples from Jezero Crater, revealing potential signs of past life on Mars.

Why do astronomers look for signs of life on other planets based on how life is on Earth? Couldn’t there be totally different kinds of life on other planets? – Henry, age 13, Somerville ...

Their mission could "change the way we look at the possibility of life on other planets too," the researchers ... "But these [new] experiments will provide the proof." This might seem a niche ...