Dwarf planet has water

Although expected, it was hard to confirm

By Ashley Yeager, 12:00 PM January 29, 2014

Ceres — the largest asteroid in the solar system — has water.

It’s not really a surprise. For three decades, astronomers have suspected that this “dwarf planet” might host water. But proving it was challenging. Michael Küppers with the European Space Agency (ESA) in Villanueva de la Cañada, Spain, and his colleagues now claim success.

The celestial body sits 270 million kilometers (nearly 168 million miles) from Earth in the asteroid belt between Mars and Jupiter. And Küppers’ team measured ...

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