Beyond icy worlds of Uranus and Neptune, Pluto dazzles with its mysterious ocean.

NASA's Cassini reveals the mysteries of Saturn's rings—and new hope for life on a moon.

Jupiter's massive gravitational force has made it a wrecking ball and a protector of Earth

Before it was a dry planet, Mars was a wet world that may have hosted life.

The rocky planets have similar origins, but only 1 supports life. Was it always this way?

Discover why scientists and entrepreneurs alike have their sights set on the Moon again.

Bioarchaeologists investigate a 9th-century mass grave thought to hold a lost Viking army.

The advent of horse riding changed the course of human history and our genetic makeup.

Scientists investigate the deadly megafires that swept through California in 2018.

Can a daring water engineering project revive the Dead Sea without altering its chemistry?

In the shadow of Vesuvius and Pompeii, a lesser-known volcano puts Naples at risk.

New technologies are promising a new renaissance in space travel.

New archeological evidence shows the stunning engineering of the Great Pyramid of Giza.

Journey to Kīlauea volcano to investigate the eruptions that shook Hawaiʻi in 2018.

Join scientists as they grab light from across the universe to prove quantum entanglement.

The New Horizons spacecraft zooms toward an object 4 billion miles from Earth.