Yesterday afternoon, NASA lost contact with its New Horizons spacecraft for an hour for reasons unknown. This is generally not a good thing when you’re working with technology that’s 4.5 light hours ...

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 ...

Far beyond the edge of the solar system, Pluto is revealed as a far more dynamic and mysterious world than once believed. NASA’s New Horizons mission uncovered towering ice mountains, bizarre ...

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

NASA chief Jared Isaacman has doubled down on his stance that Pluto is without a doubt a planet. For two decades, controversy has surrounded the distant icy world after it was infamously stripped of ...

An image of Pluto taken by NASA's New Horizons spacecraft on July 13, 2015. The planet was first discovered by Clyde Tombaugh, who graduated from high school in rural Kansas and went on to earn his ...

There’s been a fierce debate over the past two decades about the status of the distant icy world of Pluto after it was contentiously stripped of its planethood and reclassified as a dwarf planet. Nasa ...

NASA chief Jared Isaacman has doubled down on his stance that Pluto is without a doubt a planet. For two decades, controversy has surrounded the distant icy world after it was infamously stripped of ...

Pluto was downgraded from a planet to a dwarf planet in 2006 by the International Astronomical Union. NASA Administrator Jared Isaacman has stated his support for President Trump to take action to ...

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 ...