Milky Way center: Threads of hot gas and magnetic fields

An astronomer combined 2 decades worth of X-ray data with radio observations, creating an extraordinary image of the Milky Way center.

Scientists release best-ever dark matter map

Astronomers with the Dark Energy Survey have created the largest-ever map of dark matter, using artificial intelligence. It covers 100 million galaxies.

Are organic salts on Mars a clue to life?

NASA's Curiosity rover has found hints of organic salts on Mars. If confirmed, they could provide important clues about previous habitability and the potential for ancient microbial life.

Why does a variable star brighten and dim?

A variable star is one that brightens and dim in a cycle that might last hours, or weeks, or months, or longer. What makes a star change its brightness?

What makes a halo around the sun or moon?

A large ring or circle of light around the sun or moon is called a 22-degree halo by scientists.

Webb Space Telescope launch delayed

The James Webb Space Telescope is Hubble's successor. On June 1, 2021, space officials announced its launch will likely slip from October 31 to mid-November.

Giant planets live in the suburbs

The results of a 30-year survey of exoplanets show our solar system as "normal." That is, giant planets tend to orbit far from their stars.

The most ancient spiral galaxy yet

Astronomers have discovered a spiral galaxy surprisingly near the beginning of the universe, making it the most ancient spiral galaxy found so far.

SpaceX CRS-22 mission Thursday will carry tiny crewmates

CRS-22 - SpaceX’s 22nd cargo launch for NASA - will send bobtail squid and tardigrades to ISS this week. The launch is scheduled for June 3. How to watch, here.

Active seafloor volcanoes on Jupiter’s moon Europa?

New research suggests active seafloor volcanoes on Jupiter's moon Europa. Are they linked to life? The planned Europa Clipper mission might provide answers.