#planets

Giant Impacts Help Rocky Planets Retain Their Atmospheres

For a long time, planetary scientists thought that giant impacts drove a young planet's atmosphere away into space with all the heat they generated. But it turns out the opposite could be true. The mass a young planet gains through a giant impact increases its gravitational hold on its atmosphere.

Universe Today · EN

Would you risk your health to visit Mars?

A recent rat study hinted that cosmic radiation could pose health risks for future Mars explorers. Live Science asks its readers whether they'd take the journey anyway.

Live Science · EN

Earth Sized Planets

xkcd · EN