Outer Space

How Mars lost its magnetic field — and then its oceans
A comet impact 13,000 years ago might have wiped out megafauna
How the world’s most sensitive yardstick reveals secrets of the universe
How to terraform Mars, without nukes, on a budget
Understanding just how big solar flares can get
Here’s how growing plants on the Moon could benefit Earth
For the first time, astronomers have detected a radio signal from the massive explosion of a dying white dwarf
Astronomers have directly detected a massive exoplanet. The method could transform the search for life beyond Earth.
What do 85,000 volcanoes look like? Check out a comprehensive map of Venus and see.