保护地球，探索宇宙，发现文明
2022年8月4日 M13: The Great Globular Cluster in Hercules Image Credit & Copyright: Joan Josep Isach Cogollos Explanation: In 1716, English astronomer Edmond Halley noted, “This is but a little Patch, but it shows itself to the naked Eye, when the Sky is serene and the Moon absent.” Of course, M13 is now less modestly recognized as the Great Glo...
2021年10月8日 The Double Cluster in Perseus Image Credit & Copyright: Jack Groves Explanation: This pretty starfield spans about three full moons (1.5 degrees) across the heroic northern constellation of Perseus. It holds the famous pair of open star clusters, h and Chi Persei. Also cataloged as NGC 869 (top) and NGC 884, both clusters are about 7,000 ligh...
2021年9月25日 The Bubble and the Star Cluster Image Credit & Copyright: Lorand Fenyes Explanation: To the eye, this cosmic composition nicely balances the Bubble Nebula at the right with open star cluster M52. The pair would be lopsided on other scales, though. Embedded in a complex of interstellar dust and gas and blown by the winds from a single, massive...
2021年05月20日 M13: The Great Globular Cluster in Hercules Image Credit & Copyright: Martin Dufour Explanation: In 1716, English astronomer Edmond Halley noted, “This is but a little Patch, but it shews itself to the naked Eye, when the Sky is serene and the Moon absent.” Of course, M13 is now less modestly recognized as the Great Globular Clus...
2021年02月21日 NGC 2244: A Star Cluster in the Rosette Nebula Image Credit & Copyright: Don Goldman Explanation: In the heart of the Rosette Nebula lies a bright open cluster of stars that lights up the nebula. The stars of NGC 2244 formed from the surrounding gas only a few million years ago. The featured image taken in January using multiple exposures an...
2021年01月10日 Star Cluster R136 Breaks Out Image Credit: NASA, ESA, & F. Paresce (INAF-IASF), R. O’Connell (U. Virginia) et al. Explanation: In the center of nearby star-forming region lies a huge cluster containing some of the largest, hottest, and most massive stars known. These stars, known collectively as star cluster R136, part of the Tarantula...