Even most rocket scientists would rather avoid hard math when they don't have to do it. So when it comes to figuring out ...

The Moon is not a fixed lantern in the sky but a slow-moving partner that is gradually edging away from Earth. That retreat ...

It is true that crewed missions to the moon are expensive, difficult, and dangerous. And we now have a long history going back decades of reliable, dependable, capable robotic exploration, including ...

Without the moon, life on Earth might not even be possible. At one quarter the diameter of the Earth and one sixth its gravity, our celestial neighbor plays a critical role in setting marine-life ...

In 1968, just a year before the historic Apollo 11 Moon landing, NASA scientists discovered something that could have sent astronauts Neil Armstrong, Buzz Aldrin and Michael Collins plunging to their ...

Astronomers recently detected a stray quasi-moon in our planet’s orbit, but it's hardly the first stowaway to hang out around Earth. Unlike the Earth's moon, quasi-moons are not gravitationally bound ...