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Our solar system has a new mysterious visitor—what is it?
Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...
A 7-Billion-Year-Old Ice Ball Just Entered Our Solar System
A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...
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The Early Solar System: What Did the Planets Look Like 3.8 Billion Years Ago?
Have you ever wondered what our solar system looked like 3.8 billion years ago? Were the planets we know today anything like ...
It Came From Outside Our Solar System, and It Looks Like a Comet
I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...
A comet from an entirely different solar system is flying through ours, NASA says
Officially named 3I/ATLAS, the comet was confirmed as having originated outside of Earth's solar system on July 3, according ...
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Meteorite causes rethink of how and when our solar system formed
Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...
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Our Solar System, the Milky Way, and the Stars: A Journey to the Edge of Space
Take a journey through the Milky Way galaxy, exploring the wonders of our solar system and the distant stars that illuminate the night sky. The Milky Way is home to over 100 billion stars, each with ...
The Parker Solar probe captures closest-ever images of the Sun. See the results.
Newly released imagery from NASA shows the Sun's corona in stunning detail after the Parker Solar probe performed its closest-ever flyby.