The plumes stretch farther than any yet seen, reaching millions of light-years long and potentially influencing the cosmos ...

A famous radio signal from space long considered as a possible sign of another civilization, in the end, falls flat.

If Earth had no air, the Moon would disappear during totality. But it does, so some sunlight is scattered into Earth’s shadow ...

Astronomers have long investigated the effects of totality on animals, leaving one to wonder just what aspects trigger ...

Celebrate a Harvest Moon lunar eclipse and an occultation of the planet Saturn, just days before Neptune reaches opposition.

Come 2034, humans could witness the first-ever artificial meteor shower sparked by activity in space.

Royal Observatory Greenwich’s Astronomy Photographer of the Year winners announced including nebulae, skyscapes, and more.

Commander Jared Isaacman and mission specialist Sarah Gillis each spent a few minutes outside the Dragon capsule, performing ...

Aged 69, the chemical engineer has already spent more than a year in space. And he’s far from the oldest person to fly beyond ...

New observations show the bubbling surface of the red giant star R Doradus, a feat previously only achievable with the Sun.

Starliner has returned to Earth without a crew. A former astronaut details what it means for NASA, Boeing, and the astronauts still in space.

Photons are indeed massless, but they still travel through our universe. You can picture the fabric of the cosmos as a sort of grid — one that is four-dimensional and incorporates not only the ...