When it comes to telescope mirrors, larger is generally better. The larger your main mirror, the more light you can capture ...

China has managed to deliver a pair of satellites into lunar orbit despite the spacecraft initially being stranded in low ...

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

The close encounter was "a historic first of its type for a Japanese private, commercial lunar lander," according to ispace. It gave Resilience a fuel-saving gravity assist, changing the lander's ...

But the mission will also bring something that’s never been installed on the moon or anywhere else in space before—a fully ...

Seattle satirist Maria Semple’s breakthrough novel is a flurry of contemporary, epistolary wit. Passive aggressive e-mail ...

And one of those moons, known as Charon, is half the size of Pluto itself. But that’s not the only thing that’s unusual about ...