3 puzzles of our universe could be solved with this new dark matter theory

A new recipe of dark matter that interacts with itself could be the solution to three separate and vastly different cosmic puzzles.

Scientists created one of the largest simulations of our universe ever — about the size of 500,000 HD movies

The FLAMINGO project helps scientists explore how galaxies, dark matter and cosmic structures evolved over billions of years.

Solar activity makes space junk crash to Earth faster

Scientists studied how space junk moved in orbit over a 36-year span, finding that increased solar activity caused it to fall to Earth faster.

Mexico City is sinking up to 14 inches per year, satellite images show

Mexico City is one of the fastest subsiding cities in the world, dropping by up to 14 inches every year.

A tiny ‘plutino’ world beyond Neptune has grown a mysterious atmosphere, and we don’t know how

A trans-Neptunian object was found to possess a surprising thin atmosphere after astronomers witnessed the object occult a distant star.

NASA is making a powerful new ion engine to send astronauts to Mars — and it just passed its 1st test

A prototype ion engine that uses lithium metal vapor as a propellant has aced its first tests, achieving 25 times more power than the ion engine on the Psyche mission.

James Webb Space Telescope directly studies an exoplanet’s surface for the 1st time: ‘We see a dark, hot, barren rock’

Astronomers using the James Webb Space Telescope have directly analyzed the surface of a distant super-Earth, revealing a dark, airless, Mercury-like world.

Our Milky Way’s ‘Zone of Avoidance’ holds a galaxy supercluster with 30,000 trillion times the sun’s mass

The Vela Supercluster, in our Milky Way’s Zone of Avoidance, is competing gravitationally with other superclusters for the attention of local galaxies.

Lasers take aim at a galaxy far, far away | Space photo of the day for May 4, 2026

Looking like a scene out of “Star Wars,” this image shows the ESO’s Very Large Telescope Interferometer (VLTI) beaming four separate lasers into the sky towards the Tarantula Nebula.

Why were galaxies so active in the early universe? We may be getting close to the answer

Early galaxies were star-forming machines, gobbling up gas and spitting out stars with a furious intensity. A new model helps explain why things were so different back then.