We typically think of the Oort cloud as scattered ice balls floating far from the sun, yet still tied to it gravitationally.

Stars form in regions of space known as stellar nurseries, where high concentrations of gas and dust coalesce to form a baby ...

Lobster-eye satellite Einstein Probe captured the X-ray flash from a very elusive celestial pair. The discovery opens a new way to explore how massive stars interact and evolve, confirming the unique ...

Could our solar system have been temporarily exposed to an enhanced flux of cosmic-rays at some point in the ancient past?

Sun rays fall through clouds in the outskirts of Frankfurt, Germany, Wednesday, Aug. 26, 2020. (AP Photo/Michael Probst) Sometimes, it's not the shape of a cloud that can create a breathtaking ...

Cosmic rays coming from outside the Solar System bring these particles closer to the Sun, where they experience changes ...

The odd celestial couple consists of a big, hot star, more than 10 times larger than our Sun, and a small compact white dwarf, with a mass similar to ...