A rare image reveals a giant planet clinging to two stars, helping scientists understand how planets survive in chaotic star ...

Black holes — remnants of collapsed stars — have immense mass that curves spacetime so all paths lead inward. They also ...

Astronomers have obtained remarkably detailed images of two stellar explosions -- called novae -- just days after they began.

A new discovery, made using the James Webb Space Telescope (JWST), may just be the weirdest exoplanet yet, possessing an ...

New high-resolution images show that novae are anything but simple stellar fireworks. One exploded with multiple gas streams ...

Hidden star found orbiting a bloated red giant, Pi1 Gruis, offering a rare glimpse into how close companions shape dying ...

Astronomers have captured a rare and remarkably close view of a giant planet circling a pair of tightly bound suns, offering ...

Carl Sagan once said, “Exploration is in our nature. We began as wanderers, and we are wanderers still.” These words ...

Astronomers have traced the origin of a colossal white dwarf to a catastrophic crash between two dead stars, turning a quiet ...

Among the more puzzling cosmic phenomena discovered over the past few decades are brief and very bright flashes of blue and ultraviolet light that gradually fade away, leaving behind faint X-ray and ...

Astronomers using the James Webb Space Telescope have spotted a planet so close to its star that it's stretched into the shape of a lemon.

Astronomers analyzing data from an array of telescopes — including the W. M. Keck Observatory atop Mauna Kea on the Big ...