"Understanding the Lyman-alpha background helps shed light on nearby ... that hot interstellar gas bubbles like the one our solar system is embedded within may actually be regions of enhanced ...

This spectrograph map, generated from data collected by NASA's New Horizons probe, depicts the relatively uniform brightness ...

Astronomers say they’ve found evidence of another planet in our solar system, which would bring us back to nine. I — a certified non-astronomer — lack the background to assess the new claims ...

Last year, a probe it had dispatched in 2006 virtually re-discovered Pluto as a first act on the spacecraft’s way to explore the nether regions of the solar system. But the engineering ...

Choose from Solar System Project Background stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else. Video ...

Billions of years ago, in the frozen edges of the solar system, a violent impact shaped one of space’s oddest pairs. Instead ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

A ninth planet the size of Neptune may be hidden in the far reaches of the solar system, but the evidence has left some experts skeptical.

Once the quirky underdog of our solar system, Pluto held planetary status until 2006, when it got a cosmic demotion that still stings space fans. Discovered in 1930, Pluto was the ninth planet for ...