The head of planetary defense at the European Space Agency discusses 2024 YR4, an asteroid with a small chance of striking ...

Black holes are points in space that are so dense they create deep gravity sinks. Beyond a certain region, not even light can escape the powerful tug of a black hole's gravity. And anything that ...

Over 40% of respondents to an annual survey on what the future holds in the next ten years see a global conflict that could ...

The earliest known compasses were made in China’s Han Dynasty, between 300 and 200 BCE. These simple instruments were made from a lodestone—a naturally occurring, magnetically-charged mineral ...

Until now, scientists have held that these “chorus waves” form at points in space along the Earth’s magnetic field – which resembles that of a large bar magnet – out to about 51,000 km ...

Whereas a moon usually orbits a planet, both Pluto and Charon orbit a point in space between them — their common center of mass. The other four moons in the system — Styx, Nix, Kerberos and ...

In the photo from the space station, the comet is captured just above Earth’s horizon, which is illuminated by a bright light — also known as airglow — that occurs in the planet’s upper atmosphere ...