保护地球，探索宇宙，发现文明
2020年10月15日 Galaxies in Pegasus Image Credit & Copyright: Robert Eder Explanation: This sharp telescopic view reveals galaxies scattered beyond the stars of the Milky Way, at the northern boundary of the high-flying constellation Pegasus. Prominent at the upper right is NGC 7331. A mere 50 million light-years away, the large spiral is one of the brighte...
2020年10月14日 The Colorful Clouds of Rho Ophiuchi Image Credit & Copyright: Amir H. Abolfath Explanation: The many spectacular colors of the Rho Ophiuchi (oh’-fee-yu-kee) clouds highlight the many processes that occur there. The blue regions shine primarily by reflected light. Blue light from the Rho Ophiuchi star system and nearby stars reflects mo...
2020年10月13日 Mars, Pleiades, and Andromeda over Stone Lions Image Credit & Copyright: Cem Özkeser Explanation: Three very different — and very famous — objects were all captured in a single frame last month. On the upper left is the bright blue Pleiades, perhaps the most famous cluster of stars on the night sky. The Pleiades (M45) is about 45...
2020年10月12日 Descending Toward Asteroid Bennu Video Credit: NASA, OSIRIS-REx, NASA’s Scientific Visualization Studio; Data: NASA, U. Arizona, CSA, York U., MDA Explanation: What would it be like to land on an asteroid? Although no human has yet done it, NASA’s robotic OSIRIS-REx spacecraft is scheduled to attempt to touch the surface of asteroid 1...
2020年10月11日 Milky Way over the Pinnacles in Australia Image Credit & Copyright: Michael Goh Explanation: What strange world is this? Earth. In the foreground of the featured image are the Pinnacles, unusual rock spires in Nambung National Park in Western Australia. Made of ancient sea shells (limestone), how these human-sized picturesque spires formed r...
2020年10月10日 Virgo Cluster Galaxies Image Credit & Copyright: Fernando Pena Explanation: Galaxies of the Virgo Cluster are scattered across this deep telescopic field of view. The cosmic scene spans about three Full Moons, captured in dark skies near Jalisco, Mexico, planet Earth. About 50 million light-years distant, the Virgo Cluster is the closest lar...
2020年10月9日 The Very Large Array at Moonset Image Credit: Jeff Hellermann, NRAO / AUI / NSF Explanation: An inspirational sight, these giant dish antennas of the Karl G. Jansky Very Large Array (VLA) rise above the New Mexico desert at moonset. Mounted on piers but transportable on railroad tracks to change the VLA’s configuration, its 27 operating antennas a...
2020年10月8日 Mare Frigoris Image Credit & Copyright: Matt Smith Explanation: Lighter than typically dark, smooth, mare the Mare Frigoris lies in the far lunar north. Also known as the Sea of Cold, it stretches across the familiar lunar nearside in this close up of the waxing gibbous Moon’s north polar region. Dark-floored, 95 kilometer wide crater P...
2020年10月7日 Ou4: A Giant Squid in a Flying Bat Image Credit & Copyright: Yannick Akar Explanation: A very faint but very large squid-like nebula is visible in planet Earth’s sky — but inside a still larger bat. The Giant Squid Nebula cataloged as Ou4, and Sh2-129 also known as the Flying Bat Nebula, are both caught in this cosmic scene toward...
2020年10月6日 Mars Approach 2020 Image Credit: Jonathan T. Grayson Explanation: Look to the east just after sunset tonight and you’ll see a most impressive Mars. Tonight, Mars will appear its biggest and brightest of the year, as Earth passes closer to the red planet than it has in over two years — and will be again for another two years. In a week,...