The Milky Way, our home galaxy, is part of a different supercluster called Laniakea, which, at 500 million light-years wide, ...

T he Sun goes through an 11-year cycle of activity, going from the solar maximum, where it is covered in many sunspots and is ...

Researchers identify a concealed solar cycle that may spark more intense space weather, but it might benefit science and tech.

He wasn't wrong—the sun is 99.8 percent of the mass of the solar system. But what is that giant ball of fire in the sky? How ...

A study published in The Astrophysical Journal Letters reveals new insights into the triggering mechanisms of solar ...

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles ...

An international team has discovered the most distant spiral galaxy candidate known to date. This ultra-massive system existed just one billion years after the Big Bang and already shows a remarkably ...

Titan, Saturn's largest moon, is a fascinating world that is unique among moons of the outer solar system. It's shrouded in a ...

The May issue of Scientific American takes you on a deep-sea mining mission, explores dark comets and examines an invisible ...