2021年8月29日 Orbits of Potentially Hazardous Asteroids Image Credit: NASA, JPL-Caltech Explanation: Are asteroids dangerous? Some are, but the likelihood of a dangerous asteroid striking the Earth during any given year is low. Because some past mass extinction events have been linked to asteroid impac […]
2021年8月28日 Mars Rock Rochette Image Credit: NASA, JPL-Caltech Explanation: Taken on mission sol 180 (August 22) this sharp image from a Hazard Camera on the Perseverance rover looks out across a rock strewn floor of Jezero crater on Mars. At 52.5 centimeters (21 inches) in diameter, one of the rover
Contamination control engineers in a clean room at the Goddard Space Flight Center evaluate a propellant tank before it is installed in our Europa Clipper spacecraft. The tank is one of two that will be used to hold the spacecraft’s propellant. It will be inserted into the cylinder seen at lef
On Women’s Equality Day, NASA celebrates the women who are breaking barriers and paving the way for future generations. In this image, Dr. Nancy Grace Roman (1925-2018), NASA’s first Chief of Astronomy and “the Mother of Hubble,” visits the Space Telescope Operations Control Center
The SpaceX Crew-3 team, consisting of NASA astronauts Raja Chari, Kayla Barron, and Tom Marshburn, and ESA astronaut Matthias Maurer, and support personnel participate in water survival training at the Neutral Buoyancy Laboratory at NASA’s Johnson Space Center in this image from April 2021. Th
NASA毅力号火星车将研磨这张照片中心的岩石，让科学家和工程师们评估它是否能承受火星车强大的钻头。 影像来源：NASA/JPL-Caltech 本周，毅力号火星车将研磨一块岩石，让科学家和工程师决定该目标是否能承受其强大的钻头。 在寻找火星上古代微生物生命迹象的过程中，NASA的毅力号火星车再次准备收集第一批岩芯样本，这些样品最终可能被带到地球上作进一步研究。 本周，火星车7英尺长（2米长）的机械臂上的一个工具将研磨一块绰号为“Rochette”的岩石的表面，让科学家可以观察内部，并决定他们是否要用火星车的取芯钻头采集样本。比铅笔略粗的样本将被密封在火星车上剩余的42根钛管中的一根。 如果团队
2021年8月26日 A Blue Hour Full Moon Image Credit & Copyright: Giorgia Hofer Explanation: Nature photographers and other fans of planet Earth always look forward to the blue hour. That’s the transition in twilight, just before sunrise or after sunset, when the Sun is below the horizon but lan
2021年8月16日，NASA的机智号火星直升机在其第12次火星飞行期间拍摄了杰泽罗陨石坑South Séítah地区的这张照片，该照片已被证明对毅力号火星车科学团队计划其科学调查非常有用。 影像来源：NASA/JPL-Caltech 毅力号科学家对考虑用于火星车探索的地点的航拍图像印象深刻。 询问任何一位太空探索者，他们都会有一两张他们在执行任务时最喜欢的照片。对于NASA毅力号火星车的项目科学家肯·法利（Ken Farley）来说，他目前最喜欢的照片之一是South Séítah的彩色图像，该任务的科学团队认为这个地区可能值得火星车访问。NASA的机智号火星直升机在8月16日的第12次也是
