An Earth-observing radar satellite launched in July jointly between the U.S. and India has returned its first images of our planet’s surface.

NASA's GRACE satellite detected a large gravity anomaly over the Atlantic Ocean. Meanwhile, Earth-based observatories saw a rapid shift in the planet's geomagnetic field.

Scientists solve a 15-year Mars mystery, confirming ferric hydroxysulfate formed by volcanic and hydrothermal heating across ...

Orbital traffic software firm Kayhan Space released a free online tool Sept. 30 that it says will help researchers and ...