An astronomy professor explains what exoplanets are, why he keeps looking for them and how Israel intercepts missiles “in space.”

Typically, from what astronomers have gathered thus far, star systems follow a tidy logic: small, rocky worlds huddle close to the warmth of their star, while massive gas giants bloat up in the colder, distant reaches. But LHS 1903 flips the script. Its outermost world isn’t a gas giant; it is a naked rock.

One of the boldest dreams in modern astronomy is the search for Earth-like worlds beyond our solar system. These exoplanets may hold oceans, rocky ground, and even atmospheres rich in oxygen or ozone—conditions that hint at life. If such planets orbit ...

Astronomers have spotted a lonely world roughly the size and mass of Saturn, drifting through the Milky Way without a star to orbit. The discovery turns a once theoretical curiosity into a concrete object that scientists can weigh, locate and begin to ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed Planet Y. The planet has not been detected but merely ...

Jupiter reaches opposition on Jan. 10, but it provides a good sky show through the entire month. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the latest updates on rocket ...

Finding‍‌‍‍‌‍‌‍‍‌ planets that are outside our solar system, called exoplanets, has changed the way we see the cosmos and our place in it. These faraway planets are extremely hard to find because they are small, dim, and in the bright ...