
Physics
Explainer: Radioactive dating helps solve mysteries
Knowing the decay rate of radioactive elements can help date ancient fossils and other artifacts.
By Trisha Muro
Come explore with us!
Knowing the decay rate of radioactive elements can help date ancient fossils and other artifacts.
Seismic rumblings picked up by NASA’s InSight lander hint at molten rock moving deep below the planet’s fractured surface.
Scientists have a good understanding of the laws that make our universe tick. But they still don’t quite know how it began — or will end.
Scientists explain what really puzzles them about how our universe became what it is today — and what its future may hold.
Energy, mass and the cosmos' structure evolved a lot over the past 13.82 billion years — much of it within just the first second.
This mission could provide a blueprint for how to deflect a killer asteroid, if one is ever found headed for Earth.
A craterlike structure found off the coast of West Africa might have been formed by an asteroid that struck around the time dinosaurs went extinct.
Gravitational waves offer scientists a new way to view extreme objects such as black holes and neutron stars.
Did life evolve on Mars? NASA’s Curiosity rover spent the last 10 years trying to answer that question. Here’s the story from the rover’s point of view.
Diamond is born under extreme heat and pressure inside Earth and elsewhere in the universe.