Located approximately 27,000 light-years (one light year equals approximately nine trillion kilometres) from Earth — relatively close when it comes to galactic black holes — Sag A* has an estimated ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

CNN’s 5 Things newsletter is your one-stop shop for the latest headlines and fascinating stories to start and end your busy ...

In 2011, a project that surveyed the Milky Way galaxy for exoplanets — which are planets beyond our solar system — spotted an ...

From supermoons to a total eclipse to the national park’s biggest and best-attended star parties, these are the must-see celestial shows of the year ...

Researchers believe they have rediscovered a mysterious star system first spotted in 2011. If true, the alien sun and its ...

Fast-moving stars zooming through our galaxy might have been slingshotted from a black hole inside the neighbouring Large ...

These popular astronomy questions, answered by Astronomy magazine, will help you better understand our universe - and share ...

Astronomers have spied a monster radio jet in the distant universe that’s twice the width of the Milky Way galaxy. The ancient object formed when the universe was ...

A neutrino detector submerged in the Mediterranean Sea has sniffed out the most energetic ghost particle yet. The newly ...

A neutrino with 30 times more energy than any previously seen on Earth was detected by an unfinished observatory at the bottom of the Mediterranean Sea after travelling from beyond ...