Massive glow-in-the-dark cloud of star-forming gas found hiding near solar system. Despite being 3,400 times the mass of the sun and just 300 light-years away, the hydrogen cloud had gone unnoticed ...

Astronomer breaks down "strongest evidence yet" of life on distant planet 04:06. Scientists have unlocked one of the solar system's many secrets from an unexpected source: a planetarium show.

Space Why we must investigate Phobos, the solar system's strangest object. Mars's moon Phobos is so strange that no one knows how it formed. But a forthcoming mission could solve this mystery ...

One of Jupiter’s most recognizable attributes is its sheer size.With a diameter over 88,800 miles, our solar system’s largest planet is 11 times as wide as Earth and twice as massive as all ...

The future of the Solar System will have major changes in the Sun and in the planets. We spoke with astronomer Dr Jon Zink to cast our mind's eye far into the future and explore the end of the ...

The solar system could be packed with 1 million alien visitors, space rocks shaken away from our cosmic neighbor Alpha Centauri, new research has revealed. Skip to main content.

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, researchers say. ABC News. Live. Video. Shows. Shop. Log In. Stream on.