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Space / Astronomy

New projects broaden the search for alien signals from space

A longer list of Earth-like planets, eavesdropping on radio waves and looking for laser light shows: All raise the chances of detecting E.T.

Physicists probe validity of Einstein’s gravity on cosmic scales

New tests could verify general theory of relativity, or find flaws

Space is the place for impossible molecules

Compounds with noble gases don’t form naturally on Earth. But in the interstellar medium, they are helping scientists probe the history of the universe.

Fast facts about the Milky Way | Things to Know

VIDEO: Our galaxy may seem humble, but here are a few things to know about what makes it an exceptional place

Lessons from scorching hot weirdo-planets

Hot Jupiters were the first kind of exoplanet found. A quarter-century later, they still perplex and captivate — and their origins hold lessons about planet formation in general.

Hotter than the sun: The mysterious solar corona

Several new missions aim squarely at a long-standing astronomical conundrum, with the promise of improving space-weather predictions

How gas fuels galaxies

VIDEO: Scientists track gas through time and space to better understand how conglomerations of stars are born and die

The life and breath of galaxies

Scientists track gas through time and space to better understand how conglomerations of stars are born and die