Astronomers have identified what could be the largest structure ever observed in the known universe—a vast network of galaxy clusters and superclusters ... years—over 13,000 times the length of the ...

A star racing through the Milky Way may have a planet in tow, setting a new speed record for exoplanet systems. Using microlensing, astronomers spotted the pair moving at over 1.2 million mph.

Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.

Around 13.7 billion years ago, something collapsed. It fell outward into the nothingness that stretched in every direction, ...

Astrophysicists have observed our central supermassive black hole. They found the accretion disk is constantly emitting flares without periods of rest. Shorter, faint flares and longer, bright flares ...

NASA's James Webb Space Telescope is providing the best look yet at the chaotic events unfolding around the supermassive ...

Astronomers using the Hubble Space Telescope (HST) have studied one of the largest young star clusters in our galaxy, ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

While reviewing a survey of the sky taken in 2019, astronomers using the Hubble Space Telescope spotted LEDA 1313424. The […] ...

The heart of a globular cluster, like Terzan 4, is packed with stars so tightly that individual stars are difficult to distinguish from one another, especially with ground-based telescopes.

A nebula that neighbors the Milky Way galaxy happens to be a powerhouse of forging stars, "a bouquet of thousands of stars in ...