NASA研究:小行星的轨道和形状在DART撞击后发生了变化
在NASA历史性的双小行星重定向测试(DART)后,喷气推进实验室领导的一项研究表明,小行星双卫一(Dimorphos)的形状已经发生变化,其轨道也已缩短。
在NASA历史性的双小行星重定向测试(DART)后,喷气推进实验室领导的一项研究表明,小行星双卫一(Dimorphos)的形状已经发生变化,其轨道也已缩短。
2023年3月9日 DART vs Dimorphos Image Credit: NASA, Johns Hopkins APL, DART Explanation: On the first planetary defense test mission from planet Earth, the DART spacecraft captured this close-up on 26 September 2022, three seconds before slamming into the surface of asteroid moonlet Dimorphos. The spacecraft’s outline with two long solar panels is traced a...
NASA的哈勃太空望远镜于2022年10月8日拍摄的这幅图像显示,9月26日,这颗小行星被NASA的DART航天器故意撞击285小时后,从Dimorphos表面爆炸的碎片。随着时间的推移,碎片尾巴的形状发生了变化。科学家们正在继续研究这种物质以及它在太空中的移动方式,以便更好地了解这颗小行星。 影像来源:NASA/ESA/STScI/Hubble NASA的双小行星重定向测试(DART)调查团队对过去两周获得的数据进行分析后发现,航天器与目标小行星Dimorphos的动力学碰撞成功改变了小行星的轨道。这标志着人类第一次有目的地改变天体的运动,也是第一次全面演示小行星偏转技术。 “我们每个人都有责任保护我们的家园。毕竟,这是我们唯一拥有的星球。”NASA局长比尔·纳尔逊表示。“这次任务表明,NASA正努力为宇宙抛...
2022年10月5日 Expanding Plume from DART’s Impact Video Credit: Les Makes Observatory, J. Berthier, F. Vachier, A. Klotz, P. Thierry, T. Santana-Ros, ESA NEOCC, D. Föhring, E. Petrescu, M. Micheli Explanation: What happens if you crash a spaceship into an asteroid? In the case of NASA’s DART spaceship and the small asteroid Dimorphos, as happened las...
This is the last complete image of the asteroid Dimorphos, as seen by our Double Asteroid Redirection Test (DART) two seconds before impact. The Didymos Reconnaissance and Asteroid Camera for Optical navigation (DRACO) imager aboard captured a 100-foot-wide patch of the asteroid. The DART spacecraft streamed these images from its DRACO camera back to Earth i...
2022年9月29日 DART Asteroid Impact from Space Image Credit: ASI / NASA Explanation: Fifteen days before impact, the DART spacecraft deployed a small companion satellite to document its historic planetary defense technology demonstration. Provided by the Italian Space Agency, the Light Italian CubeSat for Imaging Asteroids, aka LICIACube, recorded this image of ...
In this image from Sept. 26, 2022, the Double Asteroid Redirection Test (DART) team, Dr. Thomas Zurbuchen, and guests at Johns Hopkins University Applied Physics Laboratory cheer as they receive confirmation of DART’s collision with the asteroid Dimorphos—the world’s first planetary defense technology demonstration. During the spacecraft’s final moments befo...
2022年9月27日 DART: Impact on Asteroid Dimorphos Video Credit: NASA, JHUAPL, DART Explanation: Could humanity deflect an asteroid headed for Earth? Yes. Deadly impacts from large asteroids have happened before in Earth’s past, sometimes causing mass extinctions of life. To help protect our Earth from some potential future impacts, NASA tested a new planet...
经过10个月的太空飞行,NASA的双小行星重定向测试(DART)——世界上第一次行星防御技术演示——于周一成功撞击了小行星目标,这是NASA首次尝试在太空移动小行星。 参考来源:NASA 位于马里兰州劳雷尔的约翰霍普金斯应用物理实验室(APL)的任务控制中心于美国东部时间下午7点14分宣布成功撞击。 作为NASA整体行星防御战略的一部分,DART与小行星Dimorphos的撞击展示了一种可行的缓解技术,可以保护地球免受小行星或彗星(如果发现的话)的袭击。 “DART的核心是代表了行星防御的空前成功,但它也是一项团结的任务,真正造福于全人类。”NASA局长比尔·纳尔逊表示。“当NASA研究宇宙和我们的家园星球时,我们也在努力保护这个家园,这次国际合作将科幻小说变成了科学事实,展示了一种保护地球的方法。” DART...
Technicians prepare to move NASA’s Double Asteroid Redirection Test (DART) spacecraft from a shipping container onto a work stand inside the Astrotech Space Operations Facility at Vandenberg Space Force Base in California in this image from Oct. 4, 2021. DART was launched on Nov. 23, 2021, aboard a SpaceX Falcon 9 rocket from Vandenberg. The spacecraft will ...