Earth has a number of mini-moons and quasi-moons. Mini-moons are objects that orbit our planet. But they make for fickle fans: They tend to swing around Earth for only a matter of months. One example ...

The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to the Moon by bouncing lasers off mirrors placed there by space probes and ...

Gravitational Interaction, Relativistic Precession, Planetary Ephemerides, Mercury Share and Cite: Bootello, J. (2025) ...

The photographs were taken during scheduled checkouts of the spacecraft’s science instruments, crucial for calibrating its sensitive cameras ahead of Psyche’s planned arrival at its namesake asteroid ...

The Three-Body Problem isn't just the name of a viral Netflix series or a Hugo Award-winning sci-fi book. It also represents a real problem in astrodynamics—and one that can cause headaches for ...

We already know a decent amount about how planets form, but moon formation is another process entirely, and one we're not as familiar with. Scientists think they understand how the most important moon ...

Just 4.3 light years from Earth lies a star called Alpha Centauri A, which is famous for being the nearest star that resembles our own Sun. In the popular Avatar movies, this star's system is home to ...

It's called the Europa Clipper, and by all accounts it is the largest spacecraft NASA ever designed for planetary exploration. After it was launched in October 2024 on board a SpaceX Falcon Heavy ...

This is a day-old moon from Feb. 19, 2015 low in the western sky shortly after sunset. Notice that the entire outline of the moon is faintly visible. This is caused by sunlight reflecting off the ...

WASHINGTON, May 14 (Reuters) - An exhaustive examination of lunar gravity using data obtained by two NASA robotic spacecraft is offering new clues about why the two sides of the moon - the one ...

Discovered by Galileo in 1610, Io has since become one of the most fascinating objects in planetary science. Orbiting just 350,000 km above Jupiter, Io experiences gravitational forces 300% stronger ...