A new paper disputes the widely accepted hypothesis that the Moon is the product of material thrown up when an object known ...

The leading explanation for the moon's origin is that it resulted from the collision of two protoplanets, or embryonic worlds. One of those was the young proto-Earth, and the other was a Mars-size ...

This last collision, also known as the “moon-forming impact,” was so large that—in addition to adding lots of material to the Earth—there was enough energy to vaporize some of the rock and metal from ...

and tore a chunk out of the proto-Earth. These planetary fragments went into orbit and mixed together, eventually coalescing to form the moon. According to this widely accepted lunar origin story ...

Before Earth and the Moon, there were proto-Earth and Theia (a roughly Mars-sized planet). The giant-impact model suggests that at some point in Earth's very early history, these two bodies collided.

A passing star may have kicked the weird moons of giant planets like Jupiter and Saturn into place, new research suggests.

The moon is thought to be the aftermath of a giant ... involving a Mars-sized 'Theia' and proto-Earth. In this image, the proposed hit-and-run collision is simulated in 3D, shown about an hour ...

Like planet-sized magnets, the proto-planets had ... and apparently lifeless as the moon. Mars still has an atmosphere, but its pressure is 100 times less than Earth's and it's almost entirely ...

A year ago, India’s Pragyan rover began a nine Earth-day-long trek across a mysterious ... The magma slush was filled with different elements. As the proto-Moon cooled down, light material ...

with the Earth arcing above the horizon. SpaceX, with its next-generation Starship boosters and capsules, is likely to lead in creating the ... [+] Moon's first proto-cosmopolis. (EDITOR'S NOTE ...

The asteroid poses no threat to Earth - On the same day, there will be a rare partial lunar eclipse coinciding with a supermoon ...

About 4.5 billion years ago, a Mars-sized planet collided with the proto-Earth, changing the composition of our planet and forming our Moon. During its first tens of millions of years, Earth was ...