That's not very much, but it's actually pushing the limits of how large a moon can be in relation to its planet. It is impossible for a moon to exceed the mass of its planet because the definition ...

While a solar eclipse involves the moon passing between the sun and the Earth, casting a shadow across our planet, a lunar eclipse ... A lunar eclipse map showing which states will have the ...

But is our moon actually a planet? The answer is technically no — at least according to NASA and the International Astronomical Union (IAU), an important global authority in astronomy.

However, as these planets make their way across the sky in this "parade", Mars is expected to suddenly disappear, due to it passing directly behind the full moon. Stock image of Mars (main ...

New research on the Earth-Moon system's orbit over time suggests that so-called "moonlets" once circled our planet. Though those moonlets no longer orbit Earth, scientists believe similar ones ...

Here's what we know about what planets you can see close to the moon this month, and how to identify planets in the sky. This is known as conjunction, when two object appear close to each other in ...

Earth will be getting a second moon in the form of Asteroid 2024 PT5, which will start orbiting our planet. During this interstellar layover, the space rock will likely become a “temporary mini ...

This month’s stargazing agenda brims with planet sightings. We have planet pairings, moon-planet hangouts, and a special treat to end the month: several evenings with all seven of our space ...

but the new paper argues that a sodium cloud whizzing around it does not come from the planet. It might be created by a hypervolcanic companion moon spewing 220,000 pounds of the material every ...

Several states will have good viewing conditions for the lunar eclipse on Thursday night, according to a map ... moon passing between the sun and the Earth, casting a shadow across our planet ...