The vast universe is filled with strange and mysterious phenomena, from quasars and black holes to the Boötes void. One bizarre element in space is rogue planets, worlds just like our own, untethered ...
Theia was a terrestrial planet that smashed into Earth around 4.5 billion years ago, leading to the formation of the moon. (Image credit: Tobias Roetsch/Future Publishing via Getty Images) ...
Astronomers are uncovering distant worlds beyond our solar system using ingenious indirect methods like observing stellar ...
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