Long before humans walked the Earth, your solar system had a brush with two blazing blue stars that passed surprisingly close ...

Jupiter harbors more oxygen than the sun, a new study finds, giving astronomers a crucial clue about how our solar system's ...

The sun’s outer atmosphere resembles a pufferfish.

At times, the sun ejects energetic material into space, which can have consequences for space-based and even ground-based ...

Our Sun’s outer atmosphere, the corona, is millions of degrees hotter than it should be, and no one knows why.

At the ragged frontier where the Sun’s influence gives way to the galaxy, a decades‑old spacecraft has stumbled into a ...

At the farthest edge of the Sun’s influence, the Voyager probes have stumbled into something that sounds almost mythic: a sheath of gas heated to tens of thousands of degrees, a kind of invisible ...

Earth is the only life-supporting planet in our Solar System. Until now. Today, we’re bringing Kepler 22-b into our planetary ...

Across the pages of history, people from different cultures, communities and countries have celebrated the return of the sun, ...