保护地球，探索宇宙，发现文明
2022年12月31日 Moon over Makemake Illustration Credit: Alex H. Parker (Southwest Research Institute) Explanation: Makemake (sounds like MAH-kay MAH-kay), second brightest dwarf planet of the Kuiper belt, has a moon. Nicknamed MK2, Makemake’s moon reflects sunlight with a charcoal-dark surface, about 1,300 times fainter than its parent body. Still, in 2016...
1月份的天空会发生什么？
行星会有一些近距离的相遇，冬天的明亮恒星，还有机会观测彗星。
2022年12月30日 Mars and the Star Clusters Image Credit & Copyright: Gabor Balazs Explanation: At this year’s end Mars still shines brightly in planet Earth’s night as it wanders through the head-strong constellation Taurus. Its bright yellowish hue dominates this starry field of view that includes Taurus’ alpha star Aldebaran and the Hyad...
This image taken by the Mars Reconnaissance Orbiter spacecraft’s HIRISE instrument on Oct. 23, 2022, of the northern plains of Arabia Terra shows craters that contain curious deposits with mysterious shapes and distribution. For instance, the deposits are located on the south sides of the craters, but not usually in the north, and are found only in craters l...
2022年12月29日 Horsehead and Flame Image Credit & Copyright: Jason Close Explanation: The Horsehead Nebula, famous celestial dark marking also known as Barnard 33, is notched against a background glow of emission nebulae in this sharp cosmic skyscape. About five light-years “tall” the Horsehead lies some 1,500 light-years away in the constellat...
2022年12月28日 Messier 88 Image Credit & Copyright: Adam Block, Mt. Lemmon SkyCenter, U. Arizona Explanation: Charles Messier described the 88th entry in his 18th century catalog of Nebulae and Star Clusters as a spiral nebula without stars. Of course the gorgeous M88 is now understood to be a galaxy full of stars, gas, and dust, not unlike our own Milky W...
12月21日，NASA的毅力号火星车将一个装有岩石样本的钛管放置在这颗红色星球的表面。在接下来的两个月里，火星车将在这个被称为“三岔口”的地方放置总共10根样品管，这是人类在另一个星球上的第一个样本库。该样本库标志着火星样品返回任务的早期一步。
The James Webb Space Telescope spies the spiral galaxy NGC 7469, located 220 million light-years from Earth in the constellation Pegasus, in this image released on Dec. 21, 2022. This galaxy is very dusty, but Webb’s infrared vision can peer through to observe features like the intense ring of star formation close around its bright center. Download the full-...
2022年12月27日 A Full Circle Rainbow over Norway Image Credit & Copyright: Lukas Moesch Explanation: Have you ever seen an entire rainbow? From the ground, typically, only the top portion of a rainbow is visible because directions toward the ground have fewer raindrops. From the air, though, the entire 360-degree circle of a rainbow is more commonly visibl...
2022年12月26日 NGC 6164: Dragon’s Egg Nebula and Halo Image Credit & Copyright: Russell Croman Explanation: The star at the center created everything. Known as the Dragon’s Egg, this star — a rare, hot, luminous O-type star some 40 times as massive as the Sun — created not only the complex nebula (NGC 6164) that immediately surround...