NASA批准dawn太空船进入延伸任务，继续绕谷神星进行观测。 http://dawn.jpl.nasa.gov/mission/status.html June 30 - Dawn Completes Prime Mission and Continues Observing Ceres Today marks the official conclusion of Dawn's prime mission, which began when the spacecraft left Earth on September 27, 2007. The mission has far surpassed all of its objectives for exploring protoplanet Vesta and dwarf planet Ceres. Some interesting statistics and other information on the prime mission are here. Dawn transmitted a large volume of scientific data to Earth on June 27-28, and it is continuing to observe Ceres even as the prime mission concludes. On July 1-2, it will transmit more pictures and spectra from its final mapping orbit at an altitude of 240 miles (385 kilometers). July 6 - Dawn Exploring Ceres in Extended Mission NASA Headquarters approved an extension of Dawn's mission at Ceres, taking advantage of the probe's capabilities to continue making discoveries about the nature of this fascinating dwarf planet. Dawn has been acquiring more stereo images and gathering additional information with all of its spectrometers. The spacecraft began sending its latest data to Earth early this morning, and it will continue until tomorrow afternoon when it resumes its observations. == 据报导dawn团队曾向NASA送出一份提案，想要用目前还剩下的燃料飞到第三颗 小行星145 Adeona (导神星)，但是被NASA否决。NASA认为继续观测谷神星的价值 比起飞到导神星来的更高。 == 我个人是觉得NASA的决定没错，而且飞到导神星的风险远比继续绕谷神星来的高太多。 可是NASA以"不能污染谷神星"为理由，拒绝让dawn太空船降低绕谷神星的高度，这我就 不知道要怎麽个观测法了，毕竟降低高度才有办法提高谷神星观测的解析度。 == 顺便恭喜朱诺号入轨成功，以及期望新视野号能成功观测2014 MU69古柏带天体。 -- 是啊.....我只是个人鱼..... 无法跟王子结合，我...我的命运就是化成泡影而死去。 辛蒂公主是个好女孩，祝你们永远幸福！ 还有一件事就是.... 偶尔...也请想想我..... ＡＩが止まらない --

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