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Moon’s ‘long-lost twin’ is following Mars around like a puppy

An asteroid that follows Mars around sure looks an awful lot like parts of the moon.


NASA

Trojan asteroids share the same orbital path as certain planets, either leading ahead of the planet or trailing behind. Jupiter is famous for its many Trojan asteroids, but Mars has a few of them as well. One these Martian companions — asteroid (101429) 1998 VF31 — could be a stunt double for our own moon.

A team led by researchers at the Armagh Observatory and Planetarium (AOP) in Northern Ireland took a close look at asteroid 101429’s composition and drew some fascinating connections to our lunar neighbor in a study set for the January 2021 issue of the journal Icarus.

The planetary scientists used the X-shooter spectrograph on the European Southern Observatory’s Very Large Telescope in Chile to

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Long-Lost Tectonic Plate Discovered Hundreds of Miles Below Canada

A team of scientists say they have uncovered evidence of a mysterious tectonic plate beneath northern Canada that some experts argue never existed.

In a study published in the Geological Society of America Bulletin, the researchers from the University of Houston identified the remains of the ancient plate—which had mostly disappeared by around 40 million years ago—hundreds of miles beneath Canada’s Yukon territory.

Whether or not the plate—dubbed “Resurrection”—ever existed has long been a hot topic of debate in the field of geology.

Tectonic plates are vast slabs of the planet’s crust, which are in constant, albeit very gradual, motion. Regions where these plates meet tend to be seismically and volcanically active.

Geologists have long known that there were two tectonic plates—called Kula and Farallon—at the beginning of the Cenozoic Era (66 million years ago to the present day) in the Pacific Ocean off the western coast of North

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