保护地球，探索宇宙，发现文明
2021年06月03日 Millions of Stars in Omega Centauri Image Credit & Copyright: Ignacio Diaz Bobillo Explanation: Globular star cluster Omega Centauri, also known as NGC 5139, is some 15,000 light-years away. The cluster is packed with about 10 million stars much older than the Sun within a volume about 150 light-years in diameter. It’s the largest and ...
2021年06月02日 The Galactic Center in Stars, Gas, and Magnetism Image Credit: X-ray: NASA/CXC/UMass/Q.D. Wang; Radio: NRF/SARAO/MeerKAT Explanation: What’s going on near the center of our galaxy? To help find out, a newly detailed panorama has been composed that explores regions just above and below the galactic plane in radio and X-ray light. X-ray light...
影像来源：NASA/JPL-Caltech 翻译：灼眼的粉丝 6月份的天空会发生什么！ 一个日偏食，天蝎座的刺钩，还有属于6月的朱诺号。 6月10日的日食主要在美国东北部和加拿大以及欧洲西北部可见。加拿大东部的一小块区域将见到日环食。 影像来源：NASA/JPL-Caltech 继上个月的月全食之后，六月的日偏食又来了。6月10日，月球将短暂地滑落在地球和太阳之间，部分遮挡我们的太阳。 5月的月食在太平洋一带观赏效果最佳，而本月的日食对美国东北部、加拿大东部和欧洲北部的观众来说将是一种享受。对于美国观众来说，这是一个日出事件，当太阳升起时，月亮似乎已经咬了太阳一口。所以你要找一个朝向东方地平线的清晰视野来观看日偏食。对那些在北方和东方更远地方的人来说，你会看到更多被月亮遮挡的太阳。于欧洲北部的人来说，这更像是一...
2021年06月01日 Satellites over Orion Image Credit: Amir H. Abolfath Explanation: What are those streaks across Orion? They are reflections of sunlight from numerous Earth-orbiting satellites. Appearing by eye as a series of successive points floating across a twilight sky, the increasing number of communications satellites, including SpaceX Starlink satellites,...
Astronomers continue to develop computer simulations to help future observatories better home in on black holes, the most elusive inhabitants of the universe. Though black holes likely exist abundantly in the universe, they are notoriously hard to see. Scientists did not capture the first radio image of a black hole until 2019, and only about four dozen blac...
2021年05月31日 Mimas: Small Moon with a Big Crater Image Credit & Copyright: NASA, JPL-Caltech, Space Science Institute, Cassini Explanation: Whatever hit Mimas nearly destroyed it. What remains is one of the largest impact craters on one of Saturn’s smallest round moons. Analysis indicates that a slightly larger impact would have destroyed Mimas ent...