What's Inside a Neutron Star Shouldn't Exist
Image: NASA/ESA/NRAO/AUI/NSF/G. Dubner (University of Buenos Aires). The Crab Nebula: the expanding remnant of a supernova witnessed in 1054 AD. At its heart spins a...
Journal
Journal
Most of the Universe Is Missing — We Still Can't Find It
Image: NASA, ESA, CSA, STScI, CXC Eighty-five percent of all the matter in the universe is something we have never seen, never touched, never caught...
The Sun Will Die — Here's the Exact Timeline
Image: ESO/S. Steinhöfel Somewhere around five billion years from now, the Sun will run out of hydrogen fuel in its core and begin to die....
A Third Galaxy Without Dark Matter Shouldn't Be Possible
A third galaxy has been confirmed with almost no dark matter. NGC 1052-DF9 challenges everything we thought we knew about galaxy formation.
391 Black Hole Collisions Found — And One Is Moving the Wrong Way
LIGO's new catalog doubled gravitational-wave detections. Among them: the first black hole–neutron star merger on an elliptical orbit.
Nothing in Your Life Prepared You for the Scale of Space
How do we measure a universe that outgrows every ruler? Explore AU, light-years, and parsecs with interactive tools that make cosmic distances tangible.
A Star's Fate Is Written in One Number
A star's fate is written by one number: mass. Set the mass, watch it live and die. Discover how every iron atom in your blood...
Inside a Black Hole, the Rules You Know Stop Working
Where spacetime collapses and light cannot escape. Experience gravitational lensing, accretion disks, and the first image of a black hole — interactively.
The Kardashev Scale: How Far Can Civilization Go?
Explore the Kardashev Scale — from Type I to Type III civilizations. Interactive slider lets you harness a star's energy output. Where does humanity rank?