Discover Magazine on MSN
Earth and the Mysterious Planet Theia Were Likely Close Neighbors Before the Moon Formed
Discover how scientists have used iron isotopes to determine the likely origin of the Mars-sized planet named Theia.
New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon ...
The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to ...
Space.com on MSN
Earth and Theia smashed to birth the moon, but did they first start out as close neighbors?
"The most convincing scenario is that most of the building blocks of Earth and Theia originated in the inner solar system.
Theia, the world that helped form the Moon, came from the Solar System. Chemical clues in Earth and Moon rocks reveal this ...
Make sure your angles are in units of radians (not degrees), where 2π radians = 360 degrees. But after that you will get the ...
The asteroid, known as 2022 RD2, belongs to a rare class of space rocks called Arjunas. These objects travel around the sun ...
About 4.5 billion years ago, the most momentous event in the history of Earth occurred: a huge celestial body called Theia ...
3hon MSN
Full Moon December 2025: When to watch this year’s final supermoon — Date, time and best places
Sky watchers around the world are gearing up for one of the years most striking lunar events the Full Moon of December 2025, ...
Researchers from the Max Planck Institute for Solar System Research led the study. They examined iron isotopes in 15 Earth ...
Smithsonian Magazine on MSN
A Planet Slammed Into Earth 4.5 Billion Years Ago, Forming the Moon. The Projectile May Have Been Our Neighbor
Little is known about the long-destroyed moon-forming planet, Theia. But it may have been born in the inner solar system—just like Earth—a new study suggests ...
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