Turns out that long stints in outer space affect levels of cerebrospinal fluid. That explains why many astronauts who had 20/20 vision before space missions needed glasses upon return, according to a paper
presented this week. Read the rest
Researchers at UT Austin have analyzed a deep depression on Mars that differs from a typical crater. The Hellas depression
may in fact be an ancient ice cauldron, where a glacier forms over an active volcano, creating a chemical-rich environment that could support life forms. Read the rest
SETI Institute chief astronomer Seth Shostak bet hundreds of people at Boing Boing: Ingenuity that we'll hear from an extraterrestrial within 25 years. Find out why.
Researchers at the Universidad de Buenos Aires recreated conditions found on the surface of Jupiter's moon Europa in the lab, and then proved that some Earth organisms are capable of surviving in that extreme environment. At least, for three hours.
It's one experiment in a growing body of work aimed at proving that Earth could seed other planets with life. Read the rest