Sunspot AR3229 erupted with an X2-class solar flare. NASA's Solar Dynamics Observatory captured the fireworks in multiple ...

NASA's Interface Region Imaging Spectrograph (IRIS) mission captured an X1.1-class solar flare. See time-lapse footage of the ...

Along with bonus stargazing targets!

Harvard astrophysicist Avi Loeb identifies 18 anomalies of interstellar object 3I/ATLAS, raising questions about whether it ...

When NASA launched the Pioneer probes, they were met with an intriguing mystery. At around 20 astronomical units, both ...

A 700-metre asteroid went undetected near Earth after hiding in the Sun’s glare, raising fresh questions about blind spots in ...

"Most excitingly, this new idea addresses one of the longstanding habitability problems on Europa and is a good sign for the ...

Over the years, passing spacecraft have observed mystifying weather patterns at the poles of Jupiter and Saturn. The two ...

On Earth, deep-sea vents may have given rise to the planet’s first life. But nothing of the sort seems to be happening at the ...

Jupiter and Saturn's different polar storms reveal clues about planet interiors: Saturn has harder bottom than Jupiter.

What Yang Liwei heard during China’s first crewed spaceflight still defies physics, sensors, and every known explanation.

After a year featuring a brilliant green comet, a rare eclipse at sunrise, perfect views of the planets, a traveler from deep ...