Earth, asteroid

Earth’s Mini-Moon Mystery Solved: It’s a Chunk of the Moon
For a brief, but exciting, time last year, Earth had two moons. A small asteroid lingered close to our planet in its orbit around the Sun, temporarily caught by Earth’s gravity to become a far away mini-moon. A closer look at the space rock reveals a rather familiar origin: Earth’s mini-moon might actually be a broken-off piece of our regular Moon.
Study finds that Earth's small asteroid visitor is likely a chunk of moon rock
A near-Earth object was likely ejected into space after an impact thousands of years ago. Now it could contribute new insights to asteroid and lunar science.
Earth's recent asteroid visitor might've been a piece of the moon
Earth's temporary asteroid friend last year was a chunk of its real moon that had been blasted into space thousands of years ago, scientists find.
NASA: Near-Earth Asteroid Likely Came from the Moon
The asteroid is about 33 feet (10 meters) across and poses no danger to Earth. It joins another known lunar asteroid discovered in 2016 known as 469219 Kamo’oalewa. Scientists hope that as telescopes become more powerful, we will be able to detect more bits of the Moon that have been blasted free in ancient impacts.
Earth’s Mini-Moon Was Probably a Piece of Its Real Moon
Scientists think a small rock discovered near Earth last August was hurled into space by an ancient impact on the lunar surface.
Asteroid threat? A giant, 44-foot, house-sized space rock approaching Earth tomorrow; here's what NASA says
NASA's Jet Propulsion Laboratory is tracking asteroid 2024 YY5. The space rock will make a safe approach to Earth soon.
Earth is bombarded with rocks from space—but who gets to keep these ultimate antiques?
Every day, about 48.5 tons of space rock hurtle towards Earth. Meteorites that fall into the ocean are never recovered. But ...
A rover has been collecting rocks from Mars for years. How will they get back to Earth?
A collection of Martian rocks could reveal details about potential past life on the Red Planet – but first NASA has to get ...
New Scientist15h
Carbon removal schemes on farms could change Earth’s reflectivity
Carbon removal schemes involving enhanced rock weathering should consider whether the rocks they use are lighter or darker ...
ZME Science10h
Earth Had a Tiny Second Moon for a Few Months. It Might Be A Chunk of the Moon
For a few months, Earth had a second moon — a tiny asteroid that may have been a piece of our own Moon ...
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Continent-size blobs in Earth's mantle are a billion years old, ancient crystals reveal
Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds.