标签: 行星防御

DART太空船与双卫一

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...

DART的倒数第二视图

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...

DART团队庆祝碰撞成功

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...

DART:撞击小行星双卫一

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...

金色DART的星系开箱

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 ...

DART使用木星和木卫二测试自主导航系统

在拍摄了地球夜空中最明亮的行星之一的图像后,双小行星重定向测试(DART)相机最近将目光投向了另一个引人注目的景象:木星及其四颗最大的卫星。 在一次SMART Nav测试中拍摄的以木星为中心的DRACO图像的裁剪合成。拍摄该图像时,DART距离地球约1,600万英里(2,600万公里),木星距离航天器约4.35亿英里(7亿公里)。 影像来源:NASA/Johns Hopkins APL 9月26日,当NASA的DART航天器驶向备受期待的双星小行星Didymos时,航天器的成像仪——Didymos侦察和光学导航小行星相机(简称DRACO)已经拍摄了数千张行星照片。这些照片为领导NASA任务的约翰·霍普金斯应用物理实验室(APL)团队提供了必要的数据,以支持正在进行的航天器测试和预演,为航天器对Didymos的卫...

DART瞄准小行星目标

NASA的双小行星重定向测试(DART)航天器最近首次观察了双小行星系统Didymos,包括其目标Dimorphos。9月26日,DART将有意撞击Didymos的小行星Dimorphos。虽然这颗小行星对地球没有威胁,但这是世界上首次测试动能撞击技术,利用航天器使小行星偏转,进行行星防御。 这张来自小行星Didymos及其轨道卫星Dimorphos的光线图像是由Didymos侦察和小行星光学导航相机(DRACO)于2022年7月27日拍摄的243张图像合成而成。 影像来源:NASA JPL DART Navigation Team 这张来自小行星Didymos及其轨道卫星Dimorphos的光线图像是由Didymos侦察和小行星光学导航相机(DRACO)于2022年7月27日拍摄的243张图像合成而成。 在距...