Astronomy
The 315-Year-Old Science Experiment
How counting sunspots unites the past and future of science.
Mario Livio on 25 Years of Hubble
The astrophysicist looks at the history of the world’s most famous telescope.
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.