Tag Archives: Pluto

Historical study revisits debate over Pluto

Twelve years after the International Astronomical Union voted in a definition of planethood that reclassified Pluto, the debate goes on. A newly published study uses the historical record to take aim at the definition’s most controversial clause: the idea that … Continue reading

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New Horizons probe wakes up for post-Pluto flyby

The mission operations team for NASA’s New Horizons probe has awakened the spacecraft from its robotic hibernation, and now it’ll stay awake for its scheduled Jan. 1 flyby of a mysterious object on the solar system’s edge, known as 2014 … Continue reading

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Scientists say Pluto was made from a billion comets

Did Pluto form like its closer-in brethren in the solar system, or is it the result of an agglomeration of comets from the edge of the solar system? A study published in the journal Icarus makes the case for comets. To reach … Continue reading

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Pluto’s champions tell the tale of an epic mission

It took nine years for NASA’s New Horizons spacecraft to get to Pluto, and laying the groundwork for that history-making space mission here on Earth took nearly twice as long. The drama and intrigue surrounding New Horizons during those decades, as chronicled … Continue reading

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Pluto’s first place names win official blessing

Some of the best-known places on Pluto, including the heart-shaped Tombaugh Regio, have finally gone legit. But lots of other places, such as Cthulhu Regio, are still in the dark. That’s the upshot of today’s announcement from the International Astronomical Union, … Continue reading

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Peace pact reached over Pluto’s map

It’s taken a year and a half, but the International Astronomical Union and the science team behind NASA’s New Horizons mission have finally struck a deal for naming the features on Pluto and its moons. The agreement, announced today, will … Continue reading

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How a heavy heart made Pluto flip out

Pluto’s famous heart-shaped feature may well have migrated over the course of millions of years as the dwarf planet spun, and that would add to the evidence for a slushy ocean hidden beneath the ice, two groups of scientists say. … Continue reading

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