Planet

Moonrise from aboard the International Space Station, August 3, 2017.

What happened to the moon’s magnetic field?

Science

Unlike Earth, the moon doesn’t have a magnetic field — but it did billions of years ago. What happened?

What happened to the moon’s magnetic field?
An artist’s concept of a planetary system discovered by Kepler, called KOI-961.

Kepler turns up a trove of new exoplanets

Science
Kepler turns up a trove of new exoplanets
Plate tectonics illustration.

Before plate tectonics, the Earth may have been covered by one giant shell

Science
Before plate tectonics, the Earth may have been covered by one giant shell
An artist’s rendering of the surface of exoplanet TRAPPIST-1.

The scientific community is still buzzing about discovery of seven Earth-sized exoplanets

Science
The scientific community is still buzzing about discovery of seven Earth-sized exoplanets