The speed of light is the fastest anything can travel. What happens to a photon from a galaxy 25 million light years away on its journey toward Earth?

Astronomers are urging Earthlings to keep their eyes peeled for a once-in-a-lifetime sight that hasn't been observed for 80 ...

This image from NASA’s Chandra X-ray Observatory reveals the locations of various elements in the Cassiopeia A supernova remnant, including silicon (red), sulfur (yellow), calcium (green), and iron ...

Astronomers using NASA’s James Webb Space Telescope have made an exciting discovery: frozen water, also known as crystalline ...

Researchers say crystalline water ice has been clearly found. It lies inside a dusty debris ring around a star 155 ...

At around £419 / US$399 / AU$699, it’s the most affordable smart telescope yet, undercutting the similarly sized Dwarflab ...

Astronomers have long suspected the presence of frozen water, ever since in 2008 data from Nasa's retired Spitzer Space ...

Sophisticated computational models let us examine objects such as supernova remnants in extraordinary detail and from every ...

The spiral galaxy known as Messier 81 (M81) has a rosy tint in this June 1, 2007, composite image that incorporates data from ...

NASA's James Webb Space Telescope has made the first-ever and long-anticipated detection of ice outside of our own solar system. The frozen water was found within a debris disk circling HD 181327, a ...

Webb Telescope finds crystalline water ice around star HD 181327. This discovery could reveal how icy bodies contribute to ...