Mars, the fourth planet from the Sun, is a subject of fascination for astronomers. Though significantly smaller than Earth, this red-hued world has two moons that continue to spark debate among ...

The Earth often gets a few visitors in the solar system, but some stick around for a while. Here's what to know about the ...

Phobos is the larger and innermost of Mars' two moons, and it's a fascinating celestial body. It's small, irregularly shaped, and orbiting just about 6,000 kilometers above the surface of the Red ...

The asteroid isn’t a second moon, instead it is a quasi-satellite that is trailing the Earth’s orbit around the sun. Unlike ...

Does the earth have two moons? A quasi-moon has appeared in the sky, but what is the story with the rock orbiting our planet ...

The Earth often gets a few visitors in the solar system, but some stick around for a while. Here's what to know about the ...

The phenomenon of a Full Moon arises when our planet, Earth, is precisely sandwiched between the Sun and the Moon. This ...

NASA's Europa Clipper spacecraft is on a journey to Jupiter's moon, Europa, a frozen world believed to harbor a salty ocean beneath its icy crust — and possibly the conditions to support life. Credit: ...

When Earth is opposite Mars from the sun, it will appear full because you’re looking directly on the daylit side. But ...