Yahoo News: Xena, the possible 10th planet in our solar system, has its own moon, a dim little satellite called Gabrielle, its discoverers reported.
Astronomers who reported Xena’s discovery in July said they detected Xena’s sidekick on September 10 using the Keck Observatory on Mauna Kea in Hawaii. Their findings will be submitted to the Astrophysical Journal Letters on Monday.
“Since the day we discovered Xena, the big question has been whether or not it has a moon,” Michael Brown, of the California Institute of Technology, said in a statement. “Having a moon is just inherently cool — and it is something that most self-respecting planets have, so it is good to see that this one does too.”
Xena, known formally as 2003 UB313 but nicknamed for the warrior princess of television fame, and Gabrielle orbit the sun out beyond Pluto in a band known as the Kuiper Belt, a swath that is home to comets, asteroids and other space rocks.
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