#hera
4 discoveries · Hand-picked discoveries from the open web, newest first.
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ESA Hera 探测器发回 DART 撞击的小行星照片
ESA Hera 探测器拍下了 Didymos 双小行星系统的首张近距离照片。这个系统由两颗小行星组成,直径 780 米的 Didymos 是主星,直径 151 米的 Dimorphos 则绕着它运行。2022 年 9 月 26 日,NASA DART 探测器直接撞上较小的 Dimorphos,再测量它绕行主星 Didymos 的时间改变了多少。为了进一步了解这次撞击的影响,Hera 于 2024 年 10 月 7 日发射,历经两年飞行抵达这对小行星附近。它将近距离调查撞击如何改变小行星的轨道与地表,评估这种方法将来能否用来使威胁地球的小行星偏离原有轨道。Hera 用单色小行星取景相机从 60 公里外拍下照片。较小的 Dimorphos 大部分隐没在阴影中,主星 Didymos 则清晰可见。赫拉号拍到的是主星的另一面,地貌与 DART 相机在撞击前不久拍到的那一面明显不同。这一面仍可见先前观测到的赤道隆脊,其余区域则有多块巨石、数个撞击坑,以及疑似沟槽或隆脊的地形。估计已有大量撞击喷出物从较小的 Dimorphos 飞越约 1 公里,抵达主星 Didymos,部分地表特征可能因此形成。Hera 接下来将进一步观察两个天体,有系统地绘制所辨识出的各项变化,并厘清这些地貌是否与喷出物有关。
Solidot · ZH
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Raumsonde Hera: Erstes Foto von Asteroid Didymos und seinem Mond Dimorphos
Anfang November 2026 nahm die europäische Raumsonde Hera das erste scharfe Bild des Asteroiden Didymos auf, sein Mond Dimorphos versteckt sich in dessen Schatten.
Spektrum · DE
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NASA smashed into an asteroid. Now Hera is closing in to see what happened
Europe’s Hera spacecraft has captured its first clear view of two asteroids involved in NASA’s historic 2022 experiment to redirect a potentially dangerous space rock. Now approaching the pair, Hera will investigate the mysterious aftermath of the collision and uncover why the asteroid shifted far more than scientists predicted.
ScienceDaily · EN
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Hera Probe Sees Asteroid Pair Separately for First Time
Planetary defense is a growing concern among the scientific community, as efforts have been made to design and implement missions meant to deflect incoming threats to the Earth well in advance. In 2022, NASA intentionally collided the Double Asteroid Redirection test (DART) planetary defense spacecraft into the smaller asteroid of the binary asteroid, Didymos and Dimorphos, with the latter being the smaller one. While the goal was to ascertain if deflecting an asteroid is feasible, how did this influence the geological characteristics of Dimorphos, and what can it teach us about planetary defe
Universe Today · EN