Astronomy
Don’t Write Off ET Quite Yet
It’s true that we haven’t seen alien life, but neither have we seen much of the universe.
A Quick Spin Around the Big Dipper
See how the night sky would appear from a different part of the galaxy.
What’s 250 Million Light-Years Big, Almost Empty, and Full of Answers?
Astronomers are using new tools in their search for cosmic voids.
NASA Is Going to Dip This Cup Into the Sun’s Corona
A 2018 mission will send a probe to within 4 million miles of the sun.
When the Earth Had Two Moons
A new model—“The Big Splat”—explains the strange asymmetry of the moon.
Looking for a Second Earth in the Shadows
Scientists are blocking out the light of distant suns to look for life.
Falling in Love With the Dark
One astronomer has taken to U.S. National Parks to rekindle an old romance.
The Billion-Dollar Telescope Race
How three groups are competing to make the first extremely large telescope.











