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.
Journal
Journal
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.
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?