Astronomers have made a surprising discovery at the heart of our galaxy—the Milky Way. They’ve found cold clouds of gas floating inside the blazing-hot Fermi bubbles, enormous structures of ...

Most comets, including the well-known Halley's, loop through our solar system like cosmic time capsules that formed alongside ...

As we study the universe more, we have found ourselves to be part of much larger structures, formed by gravitational interactions. We orbit the Sun, the Sun is part of the Milky Way, and the Milky Way ...

The solar system's journey through the galaxy is more complex than most imagine. While we often picture planets orbiting the ...

For centuries, humanity believed that Earth was the center of the universe, a view championed by Aristotle and Ptolemy. But ...

Scientists are racing to learn as much as possible about the interstellar comet 3I/ATLAS before it fades from view forever ...

A newly discovered interstellar comet could be older than the Solar System, and scientists think it carries secrets from the ...

Scientists discover 3I/ATLAS, a possible 7-billion-year-old comet from deep space. It may rewrite what we know about the ...

For the photographers honored at the 2025 Astronomy Photographer of the Year awards, the universe is their muse. From our ...

The annual competition for professional and amateur astrophotographers released its shortlisted images, which capture the ...

Before defining what a light-year is, we should define what a light-year is not: It is not a measure of time, but rather a ...