Astronomy

A comet impact 13,000 years ago might have wiped out megafauna
NASA shares colorful “postcard” of Mars’ surface
Can “terraforming” turn Mars or the moon into Earth 2.0?
How the world’s most sensitive yardstick reveals secrets of the universe
New NASA video shows just how big black holes really are 
NASA spots an enormous water plume erupting on Saturn’s ocean moon
How to terraform Mars, without nukes, on a budget
Understanding just how big solar flares can get
A massive moon telescope could solve the mystery of the “Cosmic Dark Ages”
For the first time, astronomers have detected a radio signal from the massive explosion of a dying white dwarf