Pluto reaches opposition at 3 A.M. EDT. Opposition is when objects typically appear at their best, and with no Moon in the ...

Early observations of the planets revealed worlds far different from Earth, demonstrating that the universe was far more ...

Though Pluto has formally been considered a dwarf planet for almost two decades, it still has many lessons left for planetary scientists — including hints about how the solar system formed.

Pluto used to be the ninth planet of the solar system until 2006 when scientists removed it from the list and declared it a dwarf planet. But Pluto continued orbiting the Sun as before. Pluto ...

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 ...

But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune , its extreme orbit circumnavigates the sun once every 25,000 years, taking it ...

Close to 18 years ago, astronomers spotted a miniature, icy world named Eris billions of miles beyond Neptune. But unlike its dwarf planet cousin Pluto — which New Horizons promoted to a rich ...

Nor do other schoolchild mnemonics for remembering the planets of the solar system, now that Pluto has been demoted from that rank. Members of the International Astronomical Union, meeting in ...

In August 2006 the International Astronomical Union General Assembly adopted a resolution to reclassify Pluto as a dwarf planet. The reasoning was that it didn't satisfy one of three newly defined ...

No. Pluto is still classified as a dwarf planet. Despite ongoing debate and public support for its reinstatement, the International Astronomical Union has not changed its 2006 decision.

Pluto, as seen by the New Horizons spacecraft as it flew towards the planet on July 14, 2015, from a range of 22,025 miles (35,445 kilometers).