One Pluto year equals 248 Earth years. At 1473 miles in diameter—about half the width of the United States—Pluto is the ...

New Horizons’ data will enable entire textbooks to be written about the mysterious celestial body. Already, the pioneering NASA mission has confirmed the existence of a polar ice cap on Pluto ...

Flyby New Horizons Pluto Solar System Spacecraft Get the best tech, science, and culture news in your inbox daily. News from the future, delivered to your present. Please select your desired ...

The International Astronomical Union, which reclassified Pluto as a dwarf planet in 2006, is the arbiter of such ...

However, some scientists argue that Pluto should be considered a planet based on geological activity rather than orbital mechanics. NASA’s New Horizons mission revealed ice mountains ...

The spacecraft zoomed within 2,200 miles of it, more than three times closer than the Pluto flyby. Operating on autopilot, New Horizons was out of radio contact with controllers at Johns Hopkins ...

After the spacecraft's primary objectives at Pluto were completed, scientists used Alice to make broader and more frequent surveys of Lyman-alpha emissions as New Horizons traveled farther from ...

After almost a decade in space, the New Horizons probe's close encounter with Pluto lasted just six days as it hurtled past at nearly 50,000 kilometres an hour. I was lucky enough to witness ...

New Horizons launched in 2006, and, after passing by Pluto in 2015, the spacecraft traveled outside the dustiest regions of Earth’s solar system—a good vantage point for viewing Lyman-alpha emissions.

After the spacecraft's primary objectives at Pluto were completed, scientists used Alice to make broader and more frequent surveys of Lyman-alpha emissions as New Horizons traveled farther from ...