The universe is supposed to look the same no matter where you stand. That idea, known as the cosmological principle, sits at the heart of modern astrophysics. It says matter spreads out evenly when ...

Astrophysicists are mapping a vast, hidden structure in space that appears to guide matter and radiation along a kind of interstellar highway stretching from our solar neighborhood to distant stars.

From the first consultation to the technical survey, scaffolding, commissioning and aftercare, here’s how long each stage can take ...

A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around here. Believed to be a comet, the object is only the third celestial ...

Remember 3I/ATLAS? Yes, the interstellar comet that made plenty of headlines in 2025 is still romping through our solar system.

It may not feel like it, but everything in the universe is in constant motion. Our Sun, with all its planets, orbits the center of the Milky Way, flying through the cosmos at around 450,000 miles per ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. The solar system has a few ...

Nothing manmade has reached further from Earth than the Voyager series of spacecraft. Hurtling away from the sun at 38,000 miles an hour, the duo have now traveled over 12 billion miles, with Voyager ...

A tiny meteorite is rewriting what scientists thought they knew about the origins of our solar system. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Planetary scientists have long debated where the material that formed Earth comes from. Despite its location in the inner ...