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New moons

发布时间:2019-03-07 12:18:15来源:未知点击:

Astronomers have found what are probably two new satellites of Uranus, bringing the total to 20—the most known for any planet. The two are the faintest satellites ever found by ground-based telescopes. Each one is about 20 kilometres in diameter, says J. J. Kavelaars of McMaster University in Hamilton, Ontario, a member of the team that made the discovery. Both satellites have irregular,