A group of astronomers has found a solar system 116 light-years from Earth that seems to challenge current theories about how ...

New work from Carnegie’s Alan Boss and Sandra Keiser provides surprising new details about the trigger that may have started the earliest phases of planet formation in our solar system. It is ...

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how planets form. Across our galaxy, astronomers routinely observe a ...

Active small bodies—including comets, active asteroids, icy minor planets, and transitional objects—occupy a unique position in planetary science. As ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

Scientists from MIT and their colleagues have estimated the lifetime of the solar nebula — a key stage during which much of the solar system evolution took shape. This new estimate suggests that the ...

Add Yahoo as a preferred source to see more of our stories on Google. A view of HOPS-315, a baby star some 1,400 light-years from Earth where astronomers have observed evidence for the earliest stages ...

In A Nutshell Arrokoth, a snowman-shaped object billions of miles from Earth, is one of the oldest and least-disturbed relics ...

What can a newly discovered interstellar comet teach scientists about solar system formation and evolution? This is what a recent study presented at the National Astronomy Meeting 2025 hopes to ...

In the distant reaches of the solar system are many icy objects that resemble snowmen. Now, a new study reveals the simple ...