To the Edge of the Solar System! The Truth About Pluto and the Outer Reaches Revealed by the New Horizons ProbeLaunched in ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Astronomers have found a distant celestial body — ...

Two decades ago, Pluto was reclassified as a dwarf planet, sparking an enduring debate. NASA Administrator Jared Isaacman says he wants to “make Pluto a planet again.” ...

Add Yahoo as a preferred source to see more of our stories on Google. As elementary schoolers, we learned the order of the planets. Maybe your teacher even had a snappy mnemonic like "My Very Educated ...

Add Yahoo as a preferred source to see more of our stories on Google. Earth has a newly-discovered neighbor in the solar system. But the heavenly body – possibly a dwarf planet à la Pluto – isn't a ...

NASA’s New Horizons spacecraft is nearing one of the most unexplored regions of the solar system, but two of its scientific instruments could be shut down before the probe reaches the boundary where ...

Nearly eight years after its historic Pluto flyby, NASA's New Horizons probe is getting ready for another round of observations made from the icy edge of the solar system—and this time, its field of ...

Pluto hasn't been a planet for almost 20 years. In the early 2000s, scientists discovered several objects of a similar size to Pluto. So, during the summer of 2006, members of the International ...

WASHINGTON (AP) — There’s a chaotic dance going on at the far end of our solar system, involving Pluto and five of its closest friends, a new study finds. Hubble Space Telescope images of Pluto, its ...