Tag Archives: Dwarf Planets

Dawn probe falls silent, ending mission to Ceres

Dawn is dead, but Dawn is not gone: Today NASA said that the Dawn spacecraft has fallen out of contact with Earth, presumably because it’s run out of the thruster fuel that was used to keep its antennas oriented toward … Continue reading

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Planet search turns up a dwarf called ‘The Goblin’

While searching for a hypothetical Planet Nine, astronomers found a distant mini-world that’s been given a spooky nickname: “The Goblin.” The icy object was found at a distance of about 80 astronomical units from the sun, which translates to 7.4 … Continue reading

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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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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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Water, water everywhere on dwarf planet Ceres

Readings from instruments aboard NASA’s Dawn orbiter support the view that a treasure trove of frozen water lies just beneath the surface of the dwarf planet Ceres. Researchers reported those findings today at the American Geophysical Union’s fall meeting San Francisco, … Continue reading

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Dawn probe points to ice volcano on Ceres

Scientists say a mysterious mountain on the dwarf planet Ceres was apparently once an ice volcano, spewing salty water and mud instead of lava. They also say Ceres has patches of water ice that can be seen on or near … Continue reading

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Hunt for Planet Nine leads to mini-worlds

The hypothetical world known as Planet X or Planet Nine hasn’t yet been found, but thanks to the search, astronomers have discovered smaller worlds on the solar system’s edge. Mapping such objects could lead to the big discovery: a planet that’s thought to … Continue reading

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