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"This is a big step in understanding the outer solar system," team leader Rosemary Pike from the Center for Astrophysics | ...
"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...
Astronomers have discovered a "fossil" world lying in the outskirts of the solar system, according to new research.
Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's not aliens.) ...
The Subaru Telescope has made an exciting discovery: a small body beyond Pluto, with implications for the formation, ...
International astronomers have for the first time witnessed the birth of a planetary system beyond Earth's sun that could one day resemble our own.
Astronomers unveiled a striking view of the new interstellar visitor 3I/ATLAS on its journey toward the inner solar system.
The deep-space optical communication link could revolutionize how scientists communicate with spacecraft as they explore the ...