ESA’s Hera cuts speed by 70 m/s ahead of its Didymos arrival
Space · Saturday, October 24, 2026 · 5 sources

ESA’s Hera cuts speed by 70 m/s ahead of its Didymos arrival

ESA said Hera fired its second braking burn on 22 October, reducing its speed relative to the Didymos asteroid pair by 70 m/s from 2,300 km away. The spacecraft is now approaching at 20 m/s, with three smaller manoeuvres planned before its scheduled arrival on 4 November 2026.

Bottom line — Hera is due to arrive on 4 November 2026 and measure how NASA’s DART impact changed Dimorphos.

Go deeper 5

  1. ESA said the 31-minute burn was completed in two stages, with the team checking its progress before firing the remainder.

  2. Three transition manoeuvres planned between 25 and 31 October are intended to bring Hera’s relative speed close to zero, according to ESA’s mission timeline.

  3. Hera is due to study Dimorphos, the 151 m-wide moon of the 780 m-wide Didymos.

  4. NASA’s DART spacecraft struck Dimorphos in September 2022, shortening its orbit around Didymos by 32 minutes, according to the Orbinauts report.

  5. Hera will investigate the impact’s effects, including the crater and material thrown off the asteroid, which have so far been inferred from Earth-based telescope observations.

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Last generated: Oct 24, 6:13 PM UTC by wreetco

dstld. Your daily news summary designed to surface the news that matters from a European perspective. Curated by humans, summarized by AI - always with links back to the original reporting.

Links · Contact
Popular topics · WorldEuropeGamesAI
Last generated: Oct 24, 6:13 PM UTC by wreetco