保护地球，探索宇宙，发现文明
2021年7月11日 Find the Moon Image Credit & Copyright: Jimmy Westlake (Colorado Mountain College) Explanation: Where’s the Moon? Somewhere in this image, the Earth’s Moon is hiding. The entire Moon is visible, in its completely full phase, in plain sight. Even the photographer’s keen eye couldn’t find it even though he knew exactly w...
2021年7月10日 Mercury and the Da Vinci Glow Image Credit & Copyright: Gabriel Funes Explanation: On July 8th early morning risers saw Mercury near an old Moon low on the eastern horizon. On that date bright planet, faint glow of lunar night side, and sunlit crescent were captured in this predawn skyscape from Tenerife’s Teide National Park in the Can...
Two enormous galaxies capture your attention in this spectacular image taken with the NASA/ESA Hubble Space Telescope using the Wide Field Camera 3 (WFC3). The galaxy on the left is a lenticular galaxy, named 2MASX J03193743+4137580. The side-on spiral galaxy on the right is more simply named UGC 2665. Both galaxies lie approximately 350 million light-years ...
2021年7月9日 M82: Starburst Galaxy with a Superwind Image Credit & Copyright: Team ARO, Alentejo Remote Observatory Explanation: M82 is a starburst galaxy with a superwind. In fact, through ensuing supernova explosions and powerful winds from massive stars, the burst of star formation in M82 is driving a prodigious outflow. Evidence for the superwind from ...
This week in 2011, space shuttle Atlantis, mission STS-135, launched from NASA’s Kennedy Space Center to the International Space Station. STS-135 carried the Raffaello multipurpose logistics module to deliver supplies, logistics, and spare parts to the orbiting lab. This was the final launch of the Space Shuttle Program. Today, the Payload Operations Integra...
毅力号火星车用它的导航摄像机拍摄到了这张俯瞰塞塔（Séítah）地区的照片。7月5日，机智号直升机在第九次飞行中飞越了该地区。 资料来源：NASA/JPL-Caltech 这一周，火星直升机团队的忧虑加剧，因为我们为机智号准备了一次重大的飞行挑战。这次飞行发生在太平洋时间7月5日星期一凌晨2点03分，我们上传了飞行指令，然后紧张地等待当天早上晚些时候从火星发回的结果。当我们得知机智号在完成跨越2051英尺(625米)挑战性地形的旅程后，地面控制室里的人都兴高采烈。 第9次飞行与之前的飞行不同。它打破了我们在飞行时间和巡航速度方面的记录，而且在两个机场之间的飞行距离几乎翻了四倍。但真正使这次飞行与众不同的是机智号在2分46秒的空中飞行中必须经过的地形——一个被称为塞塔的地区，用像毅力号火星车这样的地面交通工具很难...
Our birthday wishes for Ringo Starr’s 81st birthday are almost boundless, extending all the way beyond Mars to our solar system’s asteroid belt, home to the asteroid that bears his name, 4150 Starr. Learn more about the planetary body that bears his name. Image Credit: NASA 我们对林戈·斯塔尔（Ringo Starr）81岁生日的祝福几乎是无限的，一直延伸到火星以外的太阳系小行星带，那里有以他的名字命名的小行星，415...
2021年7月8日 Perihelion to Aphelion Image Credit & Copyright: Richard Jaworski Explanation: Aphelion for 2021 occurred on July 5th. That’s the point in Earth’s elliptical orbit when it is farthest from the Sun. Of course, the distance from the Sun doesn’t determine the seasons. Those are governed by the tilt of Earth’s axis of rotat...
从天空上看，南极洲冰盖可能看起来像一个平静的、永久的冰毯，已经覆盖南极洲数百万年了。但是，冰盖最厚时可达数千米深，在其底部与大陆基岩相接处隐藏着数百个融水湖。在地表深处，一些湖泊通过水道系统不断充盈和排水，最终排入海洋。 现在，有了NASA在太空中使用过的最先进的地球观测激光仪器，科学家们改进了他们对南极西部冰盖下隐藏湖泊系统的地图，并发现了另外两个活跃的冰川下湖泊。 这项新的研究为从太空中发现新的冰川下湖泊，以及评估这一隐藏的管道系统如何影响冰块滑入南大洋的速度，增加可能改变其循环和生态系统的淡水，提供了关键的见解。 NASA的冰、云和陆地海拔卫星2号（ICESat-2），让科学家们能够精确地绘制冰川下湖泊的地图。卫星测量了冰层的高度。尽管冰层非常厚，但冰层会随着冰层下湖泊的充盈或清空而上升或下降。 数以百计...
2021年07月07日 Flight Through the Orion Nebula in Infrared Light Video Credit: NASA, Spitzer Space Telescope, Universe of Learning; Visualization: F. Summers (STScI) et al.; Music & License: Serenade for Strings (A. Dvořák), Advent Chamber Orch. Explanation: What would it look like to fly into the Orion Nebula? The exciting dynamic visualization of the Ori...