Hera Spacecraft Will Begin Braking Manoeuvres
The spacecraft will slow its velocity to reach the Didymos binary asteroid system.
Updated on Oct. 7, 2026 in Space
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The European Space Agency will initiate crucial braking manoeuvres for the Hera spacecraft starting 15 October 2026. This mission aims to analyze the Dimorphos asteroid following its 2022 collision with a NASA probe.
Why it matters
The mission seeks to gather definitive data on the composition and physical characteristics of Dimorphos. This information is vital to understanding the long-term effects of kinetic impact technology on asteroid defense.
The spacecraft utilizes three hydrazine-based thrusters and Reaction Control Thrusters to manage a current velocity exceeding 12 kilometres per second. Operations are supported by 35-metre deep space antennas located in New Norcia, Australia.
The players
European Space Agency
This intergovernmental organization is dedicated to the exploration of space and manages the Hera mission.
NASA
The United States government agency responsible for the science and technology of space flight conducted the initial DART impact.
The details
Roughly the size of a small car, the Hera spacecraft is conducting a series of complex burns to align itself with the Didymos binary system. These manoeuvres involve precise thrust adjustments to ensure the probe reaches its destination after its 2026 launch and previous 2025 Mars flyby.
Timeline
2022: NASA impacted the asteroid Dimorphos.
Spring 2025: Hera performed a flyby of Mars.
2 October: A test burn was performed.
15 October: Hera rotates to face the Didymos system.
22 October: The second braking manoeuvre occurs.
The Big Picture
The Hera mission follows a pattern set by the 2022 DART impact by performing the first detailed characterization of the modified asteroid system. This data bridges the gap between theoretical models of kinetic deflection and observed physical reality.
This mission could tangibly impact the development of planetary defense protocols against potential near-Earth object threats. Improved understanding of asteroid composition may eventually lead to more effective mitigation strategies for asteroid impact risks.
The takeaway
The success of these braking manoeuvres is essential for the probe to enter orbit around the Didymos system. Precise navigation and propulsion control are critical skills for long-duration deep space exploration missions.
Further reading
For more information on current interplanetary exploration, visit Space.
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