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Hera Sends a Close Look at an Asteroid System

The mission will examine an asteroid that NASA deliberately hit in 2022.

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Science news editorial illustration for Hera Spacecraft Sends Close View of Asteroid After DART Test

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has the and its , , from 60 . is in the , but of is in .

In 2022, its to a to an . The the by 33 .

is to the . Its of the are for 25. The to from a .

Source: Hera Mission / Observatoire de la Cote d'Azur, 2026-11-05.

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Read and understand · 1/2What is mostly in shadow in the new image?

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Dimorphos. The image clearly shows Didymos, while most of Dimorphos is in shadow.

Clue: Europe's Hera spacecraft has photographed the asteroid Didymos and its smaller companion, Dimorphos, from about 60 kilometres away. Didymos is clear in the image, but most of Dimorphos is in shadow.

Read and understand · 2/2How did the impact change the time Dimorphos takes to orbit Didymos?

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It became about 33 minutes shorter. The reported orbital period became shorter.

Clue: In 2022, NASA sent its DART spacecraft into Dimorphos to test a way to change an asteroid's path. The collision shortened the smaller asteroid's orbit around Didymos by about 33 minutes.

Your turn

Distinguish what the new picture shows clearly from what is mostly in shadow.

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Didymos is clear in the image; most of its smaller companion, Dimorphos, is in shadow.

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