Powerful Alfvén waves have been detected deep inside the sun's atmosphere, possibly explaining why the solar atmosphere is so hot.
It looks like the Large Magellanic Cloud (LMC) has been poaching stars from its smaller sibling, the Small Magellanic Cloud (SMC). Bad LMC!
If you think the auroral displays we have on Earth are impressive, spare a thought for aurorae erupting in the atmospheres of massive gas giant exoplanets orbiting close to their parent stars.
Could the discovery of two neighboring brown dwarfs indicate that more of these ultracool "failed stars" are nearby?
NASA's Spitzer Space Telescope has observed a strange kind of greenish "crystal rain" falling onto a protostar called HOPS-68 in the constellation Orion.
The sun is changing, but scientists aren't sure why.
Astronomers have uncovered a new class of objects they are calling "ultra-luminous supernovas."
Early Tuesday, a powerful solar explosion kicked up a surprising amount of material, creating a huge veil of dark plasma that spectacularly rained back down on the solar surface.
Q: What do you get when you combine a supernova, Twitter and a bit of luck? A: A night in Hawai'i astronomer Alex Filippenko will never forget.
Stellar nurseries are chock-full of energetic phenomena, it's little wonder that we are always finding new and bizarre things in star-forming regions.