保护地球，探索宇宙，发现文明
During the 18th century, French astronomer Charles Messier compiled a list of over 100 cosmic objects that might fool fellow comet hunters into thinking they had discovered new comets. In the 1980s, an Englishman named Sir Patrick Moore produced an additional list to highlight more cosmic wonders visible to amateur astronomers. Unlike the Messier catalog, wh...
2019 December 31 M33: The Triangulum Galaxy Image Credit & Copyright: Rui Liao Explanation: The small, northern constellation Triangulum harbors this magnificent face-on spiral galaxy, M33. Its popular names include the Pinwheel Galaxy or just the Triangulum Galaxy. M33 is over 50,000 light-years in diameter, third largest in the Local Group of galaxies...
又是一年过去，新年即将来到。 过去的一年，你有没有达成自己的目标呢？下面是NASA交出的答卷，看看他们这一年又做了些什么吧！ 以下是文字简介： 首先是阿尔忒弥斯目标，在2024年将第一位女性宇航员及下一位男性宇航员送上月球。 NASA还与众多商业公司展开合作，为宇航员的到来铺平道路。 还有一辆月球漫游车viper也在计划中，将探明月球南极水冰的分布，未来宇航员们就将借助这些数据，在月球上生活。 猎户座飞船、RS-25发动机和SLS也在准备当中。 [rml_read_more] 而为了即将到来的历史性时刻，下一代宇航服也面世了。 火星上的探索者们也捷报频传。洞察号首次测量并记录了疑似“火震”。 火星直升机经过了多次严格的测试，准备在2020年奔赴火星。 这次的火星之旅也将带上超过1000万个地球人的名字，存储在一...
“超松软”（Super-Puffs）听起来像一种新推出的早餐麦片，但实际上这是一种独特而罕见的年轻系外行星（exoplanets）的绰号。它们的密度跟棉花糖一样，我们的太阳系中并没有这种行星。 这张图描绘了类太阳恒星开普勒51和NASA开普勒太空望远镜在2012至2014年间发现的三颗巨行星。这些行星大约都与木星大小相当，但质量要比木星小的多。根据哈勃太空望远镜的最新观测，它们的密度极低，更像是泡沫聚苯乙烯，而不是岩石或水。这些行星很可能在远离恒星的地方形成，之后再向内迁移到现在的位置。如今它们膨胀的氢/氦大气正慢慢渗入太空，最终可能会留下体积更小的行星。如果我们沿着银河系的猎户座螺旋臂从开普勒51（约2600光年的距离）望向太阳，就会看到这张图所展示的星空。但我们的太阳太微弱，在模拟裸眼视图中无法看到。 Cr...
2019 December 30 Messier 20 and 21 Image Credit & Copyright: Stanislav Volskiy, Chilescope Team Explanation: The beautiful Trifid Nebula, also known as Messier 20, is easy to find with a small telescope in the nebula rich constellation Sagittarius. About 5,000 light-years away, the colorful study in cosmic contrasts shares this well-composed, nearly 1 de...
2019 December 29 Cassini Spacecraft Crosses Saturn’s Ring Plane Image Credit: NASA, ESA, JPL, ISS, Cassini Imaging Team; Processing: Fernando Garcia Navarro Explanation: If this is Saturn, where are the rings? When Saturn’s “appendages” disappeared in 1612, Galileo did not understand why. Later that century, it became understood that ...
NASA astronaut Christina Koch makes observations from the International space Station’s cupola. Koch has already made history once in her stay aboard the orbital laboratory. In October 2019 she was part of the first all-female spacewalk and now she is poised to make history again. On Dec. 28, 2019, she will break the record for the longest single space...
2019 December 28 A Distorted Sunrise Eclipse Image Credit & Copyright: Elias Chasiotis Explanation: Yes, but have you ever seen a sunrise like this? Here, after initial cloudiness, the Sun appeared to rise in two pieces and during partial eclipse, causing the photographer to describe it as the most stunning sunrise of his life. The dark circle near the t...
12月27日20时45分，长征五号遥三运载火箭在中国文昌航天发射场点火升空，2000多秒后将实践二十号卫星送入预定轨道，发射飞行试验取得圆满成功。此次发射飞行试验主要考核长征五号火箭总体方案、各分系统方案的正确性、协调性，对后续航天任务的相关关键技术进行验证。
The Anti-Atlas Mountains of Morocco formed as a result of the collision of the African and Eurasian tectonic plates about 80 million years ago. This collision destroyed the Tethys Ocean. The limestone, sandstone, claystone and gypsum layers that formed the ocean bed were folded and crumpled to create the Anti-Atlas Mountains. In this image of southwest Moroc...