See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Our home galaxy might be larger than we first assumed, astronomers have ...

Scientists at NASA, utilizing the Chandra X-ray Observatory, have unveiled a significant finding that indicates the outer spiral arms of the Milky Way extend much further than earlier maps suggested.

Astronomers have discovered an extraordinary new giant radio galaxy with plasma jets 32 times the size of our Milky Way. Measuring 3.3 million light-years from end-to-end, the cosmic megastructure was ...

The Milky Way is a barred-spiral galaxy about 100,000 light years in diameter, but only about 1,000 light years thick. It contains more than 100 billion stars, and some estimates place that number ...

A group of astronomers has discovered the smallest, dimmest satellite galaxy bordering the Milky Way’s nearest galactic neighbor, the Andromeda Galaxy. The itsy-bitsy satellite galaxy is named ...