Why don’t Green Comets Have Green Tails?
Comets with a green glow don't have green tails, and a new set of lab experiments tells us why.
Astronomers Find the Biggest Structure in the Milky Way, a Filament of Hydrogen 1,600 Light-Years Long
An international team of astronomers spotted the largest filament of hydrogen in our galaxy, which could offer tantalizing clues about…
JWST Deploys its Secondary Mirror. It’s a Real Telescope Now
Ladies and gentlemen, we have a telescope. The secondary mirror on the James Webb Space Telescope was successfully deployed in…
China’s Tianwen-1 Spacecraft Took a Selfie Using a Tiny, Secondary Spacecraft
Remember how China’s Tianwen-1 spacecraft released a remote camera to take a picture of itself during its flight to Mars,…
Astronomers Find 70 Planets Without Stars Floating Free in the Milky Way
A international team of astronomers, using observatories all over the world (and one in space), discovered 70 new rogue planets…
Success! Webb Sunshield Now Fully Deployed
If you felt a little more tension – and perhaps more goosebumps -- in the Universe today, it’s probably because…
2029 Will be the Perfect Year to Launch a Mission to Sedna
Object 90377 Sedna - a distant trans-Neptunian object known best for its highly elliptical, 11,390-year long orbit - is currently…
A Detailed Scan of the Milky Way Finds Possible “Fossil” Spiral Arms
New research has revealed previously unknown wispy structures in the Milky Way disk that could offer clues about the history…
JWST Just Deployed a Sail That Lets it Stop Getting Pushed Around by the Sun’s Radiation.
The James Webb just deployed another important instrument - the aft momentum flap - that will keep the telescope steady…
An Exoplanet Found Protected by a Magnetosphere
Using the Hubble Space Telescope, an international team of astronomers has spotted the magnetosphere of an exoplanet for the first…