The engineering lesson is simple: Sometimes the best observatory is the one already parked at another planet. When an interstellar comet was in a viewing geometry that kept Earth-based telescopes too ...

"Without Mars, Earth's orbit would be missing major climate cycles. What would humans and other animals even look like if ...

A pull in the right direction ...

Scientists who work on long-term climate patterns usually stay close to Earth. The data is here, the records are clearer, and the risks are immediate. A new study shifts that focus slightly outward.

BENGALURU—India’s Mars Orbiter Mission (MOM), also known as Mangalyaan, has completed 1,000 Earth days in its orbit, well beyond its six-month mission life, a senior space scientist says. A senior ...

Earth's climate has swung between ice ages and warmer periods for millions of years, driven by subtle changes in our planet's orbit and axial tilt. These variations, known as Milankovitch cycles, ...