A tiny neighbor galaxy is actually bending the Milky Way and leaving behind "ghost" trails of stars that we used to think were ancient relics.
Space & Astronomy arxiv | Mar 13
Massive galaxy clusters are acting like giant magnifying glasses, making things from the early universe look 8 times bigger than they actually are.
Space & Astronomy arxiv | Mar 13
If Mars was orbiting our neighbor star, its entire atmosphere would be gone in just 10 million years—poof.
Space & Astronomy arxiv | Mar 13
The Webb telescope found a massive "ring" galaxy from 12 billion years ago that likely formed after a brutal head-on cosmic car crash.
Space & Astronomy arxiv | Mar 13
A massive shockwave in space is rolling up galaxy gas into giant "smoke rings" that are hundreds of thousands of light-years wide.
Space & Astronomy arxiv | Mar 13
There’s a sonic boom happening in space that’s four times faster than the speed of sound, all because two galaxy clusters slammed into each other.
Space & Astronomy arxiv | Mar 13
The dark matter surrounding galaxies might be the exact 'glue' needed to prop open a wormhole you could actually travel through.
Space & Astronomy arxiv | Mar 16
Our solar system isn't flying through space like a comet; it's actually wrapped in a bubble shaped like a giant, split croissant.
Space & Astronomy arxiv | Mar 16
Scientists just caught a single particle from deep space that has as much energy as a billion of our biggest supercolliders put together.
Space & Astronomy arxiv | Mar 17
If a black hole passed through a thin sheet of 'superfluid,' it would start popping out quantum whirlpools like crazy.
Space & Astronomy arxiv | Mar 17
We may soon be able to tell if neutron stars are full of 'quark soup' just by listening to the hum they make when they’re near a black hole.
Space & Astronomy arxiv | Mar 17
Saturn’s iconic rings aren't just there—they’re the mangled remains of a lost moon we named Chrysalis.
Space & Astronomy arxiv | Mar 17
The spin of the very first black holes was probably decided by tiny quantum jitters during the first seconds of the Big Bang.
Space & Astronomy arxiv | Mar 17
The James Webb telescope just got a detailed 'light fingerprint' of a single massive spot on a star far, far away.
Space & Astronomy arxiv | Mar 17
Tiny black holes left over from the Big Bang might be blowing up right now, briefly glitching the laws of physics.
Space & Astronomy arxiv | Mar 18
A star just blew up inside a massive, 70,000-light-year-wide ring left over from two galaxies smashing into each other.
Space & Astronomy arxiv | Mar 18
Scientists are literally hunting for tiny black holes that might be hiding right here in our own solar system.
Space & Astronomy arxiv | Mar 18
A nearby black hole is secretly 100 times more powerful than we thought, solving a massive energy mystery in our galaxy.
Space & Astronomy arxiv | Mar 18
The closest star that's about to go supernova is actually way nearer to us than we thought.
Space & Astronomy arxiv | Mar 19
A comet exploded in 2007 and briefly created a dust cloud that was actually bigger than the Sun.
Space & Astronomy arxiv | Mar 19
Almost all the guesswork in the Solar System's total weight comes from one single, invisible spot in space.
Space & Astronomy arxiv | Mar 19
Energy loss can actually kick a particle away from a black hole instead of letting it fall in.
Space & Astronomy arxiv | Mar 19
The James Webb telescope found 'monster' black holes in tiny galaxies that are 60 times bigger than expected.
Space & Astronomy arxiv | Mar 19
Massive space blasts might be acting like 'pesticides' that stop aliens from ever evolving in the center of the galaxy.
Space & Astronomy arxiv | Mar 20
Astronomers spotted a rare galactic three-way where three galaxies are literally eating each other at the same time.
Space & Astronomy arxiv | Mar 20
Planets near dying stars can suck up the star's energy until they glow so bright we can see them all on their own.
Space & Astronomy arxiv | Mar 20
The Milky Way has a weird 'edge' where no new stars are born, and the ones that are there just get older the further you walk.
Space & Astronomy arxiv | Mar 20
A baby galaxy was so ridiculously hot it blasted a 650,000 light-year hole right through the fog of the early universe.
Space & Astronomy arxiv | Mar 20
Those weird blobs at the center of the galaxy might actually be 'zombie stars' being eaten from the inside out by tiny black holes.
Space & Astronomy arxiv | Mar 20
The Milky Way's oldest stars are survivors—they’ve made it through billions of years of crashes without losing their original 'blueprint.'
Space & Astronomy arxiv | Mar 20
Friction from dark matter got so hot in the early universe that it actually stopped the very first stars from being born.
Space & Astronomy arxiv | Mar 23
We're using black hole collisions as giant, cosmic laboratories to figure out how nuclear reactions work inside stars.
Space & Astronomy arxiv | Mar 23
We just got a front-row seat to a black hole shredding and eating a star, and it's the second closest one we've ever seen.
Space & Astronomy arxiv | Mar 23
Those galaxies orbiting the Milky Way are all lined up in a weird, flat way because of a massive ancient crash.
Space & Astronomy arxiv | Mar 23
Some huge space objects might not have an 'event horizon' and could actually push stuff away instead of sucking it in.
Space & Astronomy arxiv | Mar 24
We found an object from another solar system that’s chemically nothing like anything we’ve ever seen in our own backyard.
Space & Astronomy arxiv | Mar 24
A single mystery object in space was caught firing off 17,000 massive radio bursts in just one year.
Space & Astronomy arxiv | Mar 24
There's a massive, invisible shockwave screaming through the edge of our galaxy at over 1.5 million miles per hour.
Space & Astronomy arxiv | Mar 24
Starlight is literally crushing gas clouds into brand new stars inside the Pillars of Creation.
Space & Astronomy arxiv | Mar 24
Astronomers found another 'Odd Radio Circle'—it's a massive mystery ring of energy millions of light-years wide.
Space & Astronomy arxiv | Mar 24
The moons of Jupiter and Uranus are likely 'replacements' because the first ones were destroyed when the planets moved.
Space & Astronomy arxiv | Mar 24
When two dead stars smash into each other, they can trigger a massive helium explosion that blasts out a ghost-like flood of particles.
Space & Astronomy arxiv | Mar 25
Those weird signals from space might just be tiny black holes spontaneously flipping inside out into 'white holes' and blowing up.
Space & Astronomy arxiv | Mar 25
The cracks on the surface of Saturn's moon Enceladus are basically a map of the giant, secret ocean hidden miles beneath the ice.
Space & Astronomy arxiv | Mar 25
Bad news: the odds of our galaxy smashing into Andromeda just jumped back up to 90%.
Space & Astronomy arxiv | Mar 25
Scientists are hunting for massive ripples in space by watching for tiny, synchronized 'wobbles' in thousands of distant galaxies.
Space & Astronomy arxiv | Mar 25
The faint 'ghost light' from lost, orphaned stars is actually a perfect map for the invisible blobs of dark matter holding the universe together.
Space & Astronomy arxiv | Mar 25
We just spotted the third comet ever to visit our solar system from another star.
Space & Astronomy arxiv | Mar 25
Almost all the 'missing' dark matter in the universe could just be ancient black holes hiding in massive, invisible clusters.
Space & Astronomy arxiv | Mar 25
In just three years, the number of times satellites had to swerve to avoid crashing in space went from 7,000 to over 144,000.
Space & Astronomy arxiv | Mar 26
Dark energy might actually leave a 'hair' on black holes, proving the force expanding the universe sticks to the heaviest stuff in it.
Space & Astronomy arxiv | Mar 26
Some distant black holes are flickering so fast that light doesn't even have time to travel across them.
Space & Astronomy arxiv | Mar 26
The James Webb Telescope just found the specific star clusters that act as 'factories' for medium-sized black holes.
Space & Astronomy arxiv | Mar 26
We just spotted only the third object ever to wander into our solar system from another star. It’s a total cosmic tourist.
Space & Astronomy arxiv | Mar 27
There are these ancient 'fossil' zones in the middle of our galaxy that are basically assembly lines for crashing black holes into each other.
Space & Astronomy arxiv | Mar 27
We finally figured out why Earth still has a magnetic field, and it all comes down to exactly when our tectonic plates started moving.
Space & Astronomy arxiv | Mar 27
Black holes might actually be doors to a place where time just doesn't happen at all. No clocks, no aging, nothing.
Space & Astronomy arxiv | Mar 27