Magazine

The Moon

How is it that in space, despite the Sun’s presence, the surroundings look black? Apollo photos show a black sky, even with strong sunlight on the surface.

Exoplanets, Planets, Solar System, The Moon

A brief glimpse of totality

Alien Life

The SETI Institute is after alien signals. Assuming another world is beaming a 1-million-watt radio signal in our direction, how far away can that source be before the signal is lost in intergalactic noise?

Observing

Dark vs. super dark

Galaxies

Into the void

Robotic Spaceflight

Web Extra: Relive the Hubble servicing missions

Robotic Spaceflight

Tour Hubble’s iconic images

Galaxies

Weird Object: The Antennae Galaxies

Exoplanets, Planets, Stars

Garik Israelian: From Stars to the Starmus Festival

Deep-Sky Objects

Weird Object: The Boomerang Nebula

Robotic Spaceflight

Hubble’s lasting legacy and what the future might hold

Galaxies

Weird Object: Starburst Galaxy M82