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The newly discovered 10th planet.
The newly discovered 10th planet - which the discoverers have dubbed "Xena" - appears to have a Moon of its own. Nicknamed "Gabrielle", this Moon is 100 times fainter than Xena, and seems to orbit the planet once every couple of weeks. It's estimated to be 1/10th the size of Xena, so approximately 250 km (155 miles) across. The powerful Hubble Space Telescope will be turning its gaze on the pair in November/December, and should reveal even more details.
The Soyuz spacecraft carrying the crew of Expedition 12 and space tourist Greg Olsen docked with the International Space Station on Monday. The visitors were greeted by the crew of Expedition 11, who have been on board the station for nearly 6 months. Olsen will conduct several experiments on the station, and then return with the crew of Expedition 11 in about a week.
The pull of gravity from a black hole is so strong that nothing, not even light can escape it. But that doesn't mean they can't be seen indirectly. matter can pile up around a black hole and heat up, giving off a tremendous amount of radiation. Better techniques and instruments should bring Astronomers right to the edge of the monstrous black hole at the heart of the Milky Way. A continental array of submillimeter Telescopes is in the works that will reveal the shadow cast by a black hole on its surrounding material.
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