The intricate compatibility of water and life on Earth may not extend to other planets.
How counting sunspots unites the past and future of science.
Why the Great Red Spot refuses to die.
The astrophysicist looks at the history of the world’s most famous telescope.
It’s true that we haven’t seen alien life, but neither have we seen much of the universe.
See how the night sky would appear from a different part of the galaxy.
A 2018 mission will send a probe to within 4 million miles of the sun.
Lord Martin Rees tells us about black holes and existential risks.
A new model—“The Big Splat”—explains the strange asymmetry of the moon.
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