Amazon is offering 27% off the Celestron StarSense Explorer DX 130AZ. Perfect for watching Saturn's opposition on Sept. 20.

For more than sixty years, a tiny asteroid has been moving in step with Earth, hidden from view until recently. Astronomers ...

Three celestial bodies are about to meet up for one night in September in a conjunction that should be widely visible in the U.S. – including Florida.

One of the boldest dreams in modern astronomy is the search for Earth-like worlds beyond our solar system. These exoplanets ...

The spacecraft, bound for a metallic asteroid, turned to snap a striking image of our home planet from 180 million miles away.

A new rectangular telescope design could finally spot Earth-like planets around nearby stars, bringing the search for alien ...

On Aug. 23, 1966, NASA's Lunar Orbiter 1 sent back the first photo of Earth from the moon. It showed a grainy crescent Earth ...

Planet Labs PBC boosted its full-year sales forecast amid higher demand for the earth-imaging company’s data.

A simple core of pure iron and nickel couldn’t account for the observed properties. The Martian core must be rich in “light ...

When most of us think about what shaped our planet, we probably picture volcanoes, earthquakes, and huge continents slowly ...

A new method for quantifying grandeur is reshuffling the pecking order of the planet’s most impressive peaks. Turns out ...