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Glowing bridge links dwarf galaxies in stunning new image from the James Webb Space Telescope
This infrared view offers the clearest look yet at how dwarf galaxies merge, evolve, trade gas and ignite waves of new stars.
'Hubble tension' is back again as a new cosmic map deepens the puzzle
"It means cleaning house, narrowing the viable paths forward, and no longer spending energy on what are evidently dead ends."
SpaceX launches 28 Starlink satellites to orbit from California (video)
SpaceX launched yet another batch of its Starlink internet satellites on Thursday (Dec. 4), sending 28 of them up from California's central coast.
Scientists discover one of our universe's largest spinning structures — a 50-million-light-year-long cosmic thread
The discovery potentially transforms what we think about how the cosmic environment influences galaxies as they form.
Was Elon Musk in the room where it happened? This senator still wants to know
As he did eight months ago, Sen. Ed Markey asked Jared Isaacman if Elon Musk was in the room when President Trump first offered him the job of NASA chief. And, once again, Isaacman demurred.
Rare solar flare caused radiation in Earth's atmosphere to spike to highest levels in nearly 20 years, researchers say
Levels of potentially dangerous cosmic radiation in Earth's atmosphere rose to a two-decade high in November after a rare solar super-flare pummeled the planet with high-speed particles from the sun.
Mercury is hard to spot, but you can catch it in the morning sky this month
If you've never sighted this rocky little world for yourself, you'll never get a better opportunity than right now to see it.
Rare images reveal active sunspots minutes before they unleashed powerful X-flares that caused November 2025's stunning auroras
We don't often get a good look at X-class solar flares from ground-based observatories.
