Comets and asteroids preserve the building blocks of our solar system and should help explain its origin. But there are unsolved puzzles. For example, how did icy comets obtain particles that formed ...

What processes provide energy to the solar wind as it travels away from the Sun and throughout the solar system? This is what a recent study published in Science hopes to address as an international ...

"We have been calling Uranus an ice giant, but we don't really know its nature." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space ...

We preselected all newsletters you had before unsubscribing.

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...