NASA的毅力号火星车上，RIMFAX正在工作（艺术概念图）：毅力号的火星地下探索雷达成像仪（Radar Imager for Mars’ Subsurface Experiment，RIMFAX）使用雷达波探测火星地面，揭示火星地表之下未经探索的世界。 图片来源：NASA /加州理工-喷气推进实验室/挪威国防研究机构（Norwegian Defence Research Establishment，FFI） 美国航空航天局（NASA）最新的漫游车——毅力号（Perseverance）火星车，将在火星表面上使用第一台能够穿透地面的雷达仪器，用于寻找古老微生物曾经存在的痕迹。 202 […]
Scientists have come to realize that, just below the surface, about one third of Mars is covered in ice. We study this ice to learn about Mars’ ancient climate and astronauts’ future water supplies. Sometimes we see the buried ice because cliffs form like the one in this image. On the br
2020年10月13日 Mars, Pleiades, and Andromeda over Stone Lions Image Credit & Copyright: Cem Özkeser Explanation: Three very different — and very famous — objects were all captured in a single frame last month. On the upper left is the bright blue Pleiades, perhaps the most famous clust
2020年10月6日 Mars Approach 2020 Image Credit: Jonathan T. Grayson Explanation: Look to the east just after sunset tonight and you’ll see a most impressive Mars. Tonight, Mars will appear its biggest and brightest of the year, as Earth passes closer to the red planet than it has in over two years
2020年10月1日 Solis Lacus: The Eye of Mars Image Credit & Copyright: Damian Peach Explanation: As telescopes around planet Earth watch, Mars is growing brighter in night skies, approaching its 2020 opposition on October 13. Mars looks like its watching too in this view of the Red Planet from Septe
2020年9月23日 ISS Transits Mars Image Credit & Copyright: Tom Glenn Explanation: Yes, but have you ever seen the space station do this? If you know when and where to look, watching the bright International Space Station (ISS) drift across your night sky is a fascinating sight — but not very
2020年9月11日 The Reappearance of Mars Image Credit & Copyright: David Duarte and Romualdo Caldas Explanation: Mars reappears just beyond the Moon’s dark limb in this stack of sharp video frames captured on September 6. Of course to reappear it had to disappear in the first place. It did tha
2020年8月29日 Martian Chiaroscuro Image Credit: HiRISE, MRO, LPL (U. Arizona), NASA Explanation: Deep shadows create dramatic contrasts between light and dark in this high-resolution close-up of the martian surface. Recorded on January 24, 2014 by the HiRISE camera on board the Mars Reconnaissance Orbi
2020年8月22日 Yogi And Friends In 3D Image Credit & Copyright: IMP Team, JPL, NASA Explanation: From July of 1997, a ramp from the Pathfinder lander, the Sojourner robot rover, airbags, a couch, Barnacle Bill and Yogi Rock appear together in this 3D stereo view of the surface of Mars. Barnacle Bil
Hi-RISE, the High-Resolution Imaging Science Experiment camera aboard NASA’s Mars Reconnaissance Orbiter (MRO) captured this avalanche plunging down a 1,640-foot-tall (500-meter-tall) cliff on May 29, 2019. The image also reveals layers at Mars’ north pole during spring. As temperatures
