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Astronomers discover 139 new "minor planets" in the Solar System that are beyond the orbit of Neptune, which helps boost odds of finding Planet Nine.
2020-03-13

The first known interstellar object to pass through the Solar System, ʻOumuamua, has been identified as a very inactive comet and not an asteroid, as previously thought.
2018-06-27

Astronomers announce that 2014 UZ224 is the third most distant Solar System object known from our Sun, currently over 90 times the Earth's distance from the Sun (90.8 AU or 8.44 billion miles), after Eris (96.2 AU) and V774104 (~103 AU).
2016-10-11

NASA announces the "Voyager 1" space probe has left the Solar System becoming the first man-made object to reach interstellar space.
2013-09-12

Scientists debate the possibility that the Voyager 1 spacecraft, launched in September 1977, may have left the Solar System.
2013-03-20

Astronomers announce that the newly discovered double star system WISE 1049-5319 is the third-closest neighbor to the Solar System.
2013-03-11

After detailed study of the Sutter's Mill meteorite found in California on 22 April 2012, scientists report it contains some of the oldest material in the Solar System.
2012-12-21

NASA announces that the "Voyager 1" spacecraft, launched in 1977, has nearly reached the edge of the Solar System and is imminently to past through the heliosphere into interstellar space.
2012-12-3

Alpha Centauri Bb, an exoplanet, is discovered orbiting around Alpha Centauri, the nearest star system to our Solar System.
2012-10-17

Astronomers discover the first Earth analog extrasolar planet that may be capable of supporting life, Gliese 581 g, located within the habitable zone and orbiting Gliese 581, a red dwarf star twenty light years from the Solar System.
2010-09-29