Nearly 2,500 astronomers from 75 countries were working Monday on a universal definition for what qualifies as a planet, and whether Pluto should keep its status. For decades, most have defined ...

Brown was pleased by the decision. He had argued that Pluto and similar bodies didn’t deserve planet status, saying that would “take the magic out of the solar system.” “UB313 is the large ...

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have discovered a new planet in our solar system.

The research, published in the scientific journal Icarus, says Pluto never should have been downgraded from a planet to a dwarf planet 12 years ago. Why? Because, the authors say, the rationale ...

the International Astronomical Union stripped Pluto of the planetary status it has held since its discovery in 1930. The new definition of what is — and isn't — a planet fills a centuries-old ...

"Pluto would never be considered a planet if it were discovered today, and I think the fact that we've now found one Kuiper-belt object bigger than Pluto underscores its shaky status." Pluto was ...

Fifteen years ago, Pluto was kicked out of the ... many solar system objects eligible for a status upgrade. Though this broader definition of a planet may never be put to a vote, we’d love ...

Yet Pluto’s official planetary status was snatched away ... That’s part of the agreed upon definition of a planet. They both orbit a star, the Sun, like Venus, Mars, Uranus and Neptune.

First discovered and classified as planet in 1930, Pluto was relegated to "dwarf-planet" status by the International Astronomical Union in 2006. They booted it out because there appeared to be a ...

Pluto may have lost its status as a full-fledged planet in 2006, but that doesn't mean it's a joke of a world this April Fools' Day and the folks behind Pluto TV want to make that clear.

"And that's the way I will always think of it." Pluto was relegated to dwarf planet status in 2006, just months after the spacecraft that Bowman manages, called New Horizons, began its 3 billion ...

The research, published in the scientific journal Icarus, says Pluto never should have been downgraded from a planet to a dwarf planet 12 years ago. Why? Because, the authors say, the rationale ...