Astronomers have identified the largest and most distant water reservoir ever detected in the universe. This immense ...

A 3,000-light-year-long jet of plasma (superheated gas) shooting out from galaxy M87's supermassive black hole. Credit: NASA / ESA / STScI / Alec Lessing (Stanford University) / Mike Shara (AMNH ...

These are located approximately 300 light-years apart and were detected using NASA's Hubble Space Telescope and the Chandra X-ray Observatory. These black holes, buried deep within a pair of ...

Edwin Hubble observed in 1929 that galaxies appear on average to be moving away from us (see figure above), which could indicate that the universe is expanding, an effect that became known as the ...

The Triangulum Galaxy, the third-largest member of the Local Group of galaxies, is shining with star formation in a new image from the Hubble Space Telescope. Located nearly 3 million light years ...

The rosy red structures of a nearby galaxy glow brightly in a new image from the Hubble Space Telescope. The Andromeda Galaxy — the Milky Way's closest galactic neighbor — is located about 2.5 ...

New James Webb Space Telescope results have revealed that there may not be a Hubble tension after all. But contradictions within the findings point to a deeper mystery. When you purchase through ...

The original version of this story appeared in Quanta Magazine. Nearly a century ago, Edwin Hubble discovered that the universe is getting larger. Modern measurements of how fast it is expanding ...

Dwarf planet Ceres is one of the most enigmatic worlds in our solar system — one whose secrets scientists have only been uncovering in the last decade. When NASA’s Dawn mission arrived in 2015 ...

Scientists have used data from a long-retired NASA Dawn spacecraft to solve the mystery surrounding the origins of the strange dwarf planet Ceres. Ceres currently resides in the main asteroid belt ...