保护地球，探索宇宙，发现文明
This image of our home planet shows how Earth looked from more than 950,000 miles, or 1.5 million kilometers, away during the total solar eclipse visible in Antarctica on Dec. 4, 2021. The EPIC instrument on the DSCOVR spacecraft captured the eclipse’s umbra, the dark, inner shadow of planet Earth. Shaped like a cone extending into space, it has a circ...
Christopher Kraft, flight director during Project Mercury, works at his console inside the Flight Control area at Mercury Mission Control during NASA’s first crewed missions in the 1960s. 克里斯托弗·卡夫是水星计划的飞行主管，在上世纪60年代NASA第一次载人任务期间，他在水星任务控制中心的飞行控制区内的控制台工作。 Kraft was a legend, who as NASA’s first flight director oversaw early human spaceflight missio...
NASA’s Curiosity Mars rover used its black-and-white navigation cameras to capture panoramas of this scene at two times of day. This was the view at 8:30 a.m. local Mars time on Nov. 16, 2021 (the 3,299th Martian day, or sol, of the mission) and again at 4:10 p.m. local Mars time. The two times of day provided contrasting lighting conditions that brought out...
Nebula [ neb-yuh-luh ]: star-forming cloud of gas and dust. Noun, plural neb·u·lae [neb-yuh-lee, -lahy] 星云:由气体和尘埃组成的恒星形成云。名词，复数neb·u·lae [neb-yuh-lee， -lahy] These four nebulae are known for their breathtaking beauty: the Eagle Nebula (which contains the Pillars of Creation), the Omega Nebula, the Trifid Nebula, and the Lagoon Nebula. In the 1950s, a team of...
As the Crew-2 mission departed the International Space Station aboard SpaceX Crew Dragon Endeavour, the crew snapped this image of the station during a flyaround of the orbiting lab that took place following undocking from the Harmony module’s space-facing port on Nov. 8, 2021. 2021年11月8日，当Crew-2任务机组成员搭乘SpaceX 载人龙飞船奋进号离开国际空间站时，机组人员在2021年11月8日从和谐号舱面向空间的端口脱离后绕...
NGC 6891 is a bright, asymmetrical planetary nebula in the constellation Delphinus, the Dolphin. This Hubble image reveals a wealth of structure, including a spherical outer halo that is expanding faster than the inner nebula, and at least two ellipsoidal shells that are orientated differently. The image also reveals filaments and knots in the nebula’s inter...
In a first, astronomers may have seen light from the merger of two black holes, providing opportunities to learn about these mysterious dark objects. 天文学家们首次看到了来自两个黑洞合并产生的光线，为了解这些神秘的黑暗物体提供了机会。 This artist’s concept shows a supermassive black hole surrounded by a disk of gas. Embedded in this disk are two smaller black holes that may have merged togethe...
Mounded, luminous clouds of gas and dust glow in this Hubble image of a Herbig-Haro object known as HH 45. Herbig-Haro objects are a rarely seen type of nebula that occurs when hot gas ejected by a newborn star collides with the gas and dust around it at hundreds of miles per second, creating bright shock waves. In this image, blue indicates ionized oxygen (...
The Double Asteroid Redirection Test (DART), which will help determine if intentionally crashing a spacecraft into an asteroid is an effective way to change its course, is scheduled to launch no earlier than 1:21 a.m. EST Wednesday, Nov. 24 (10:21 p.m. PST Tuesday, Nov. 23) on a SpaceX Falcon 9 rocket from Vandenberg Space Force Base in California. 双重小行星重定向测...
The Flame Nebula, also called NGC 2024, is a large star-forming region in the constellation Orion that lies about 1,400 light-years from Earth. It’s a portion of the Orion Molecular Cloud Complex, which includes such famous nebulae as the Horsehead Nebula and Orion Nebula. This image focuses on the dark, dusty heart of the nebula, where a star cluster reside...