Billions of years ago, so the theory goes, something around the size of Mars smacked into Earth, spewing a whole bunch of dirt into space that eventually coalesced to form the Moon. This is called the ...

A crucial difference in the “fingerprints” of Earth and the moon confirms an explosive, interconnected past Within the first 150 million years after our solar system formed, a giant body roughly the ...

Astronomers are pretty sure they know where the moon came from. In the early solar system, a Mars-sized object dubbed Theia smashed into Earth. This cataclysmic collision knocked a huge mass of ...

A half century after NASA's Apollo 17 lunar module lifted off the moon's northeastern near side quadrant, planetary scientists still don't completely understand when or how our moon first formed. They ...

Astronomers have taken a step towards understanding how the Moon might have formed out of a giant collision between the early Earth and another massive object 4.5 billion years ago. Scientists led by ...

A team of scientists from Brown University has uncovered new sulfur isotopes unlike any found on Earth. The researchers analyzed lunar samples that had remained unopened since they were collected by ...

The moon reaches its last quarter phase on Tuesday at which point the lunar face is half illuminated by the light of the sun. This phase falls halfway between the full moon and the new moon. A new ...

This composite image of Pluto, right, and Charon, its largest moon, showcases photos captured by NASA’s New Horizons spacecraft in July 2015. Credit: NASA / JHUAPL / SwRI Unlike how scientists believe ...

The Moon’s biggest scar does not sit quietly in the background. The South Pole-Aitken basin is a vast impact structure more than 2,000 kilometers wide on the lunar far side. It has long looked ...

Reference A Blue Moon is a rare occurrence that depends on the timings of full moons during the year. The moon is not blue during a Blue Moon. Reference Learn what makes a supermoon unique, how it ...