As New Horizons passed Pluto in July 2015, did the dwarf planet alter the probe's trajectory? Douglas Kaupa Council Bluffs, Iowa Pluto did in fact both bend and accelerate the trajectory of New ...

NASA's new chief wants to reinstate Pluto as a planet. And scientists are on board – as long as you're also okay with having ...

Two decades ago, the International Astronomical Union—which defines and names celestial bodies—redefined the criteria for being a planet, putting Pluto into the new category of dwarf planet ...

It's been 20 years since Pluto was declassified as the ninth planet in our solar system, and many people wish it had never lost its status. A recent comment from NASA Administrator Jared Isaacman ...

In two weeks, NASA’s New Horizons mission will fly by Pluto, after spending nearly a decade in space. Pluto, as you may recall, was stripped of its planetary title back in 2005, for reasons that some ...

Add Yahoo as a preferred source to see more of our stories on Google. Once the quirky underdog of our solar system, Pluto held planetary status until 2006, when it got a cosmic demotion that still ...

If confirmed, the rock would become just the second world past Neptune in our solar system to host an atmosphere.

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. In 2006, the International ...

NASA chief Jared Isaacman’s call to restore Pluto’s planetary status has reignited a long-running scientific debate over ...

It's long been a question that has divided many scientists - is Pluto a planet or not? First discovered nearly 100 years ago, Pluto was known as the ninth planet in our solar system for decades. But ...

Pluto did in fact both bend and accelerate the trajectory of New Horizons when the spacecraft reconnoitered the dwarf planet in 2015, but only very slightly. There are three reasons the trajectory ...