Astrobiology

Tardigrades are tiny, endearing, and practically invincible. As it turns out, however, not even tardigrades can survive the harsh conditions of the Martian surface. Or at least, simulations of the Martian surface. For a…

This illustration of early Earth includes liquid water as well as magma seeping from the planet’s core due to a large impact. Scientists at NASA are investigating the chemistry that might have existed at this time in the…

An iron meteorite from the core of a melted planetesimal (left) and a chondrite meteorite, derived from a ‘primitive’, unmelted planetesimal (right). Credit: Rayssa Martins/Ross Findlay Zinc in meteorites reveals Earth’s…