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What colour is an asteroid? Hyperspectral imager to find out

Written by  Monday, 24 April 2023 12:30
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Hera, her CubeSats, and their rocky target destination

What colour is an asteroid? The latest instrument being prepared for ESA’s Hera mission for planetary defence will observe its target Dimorphos asteroid in a range of colours far beyond the limits of the human eye. In the process Hera’s HyperScout H hyperspectral imager will help prospect the asteroid’s mineral makeup – in the process helping to deduce how best to deflect future asteroids which might one day endanger Earth.

HyperScout view of Netherlands
HyperScout view of Netherlands

Marco Esposito, Remote Sensing Managing Director of cosine explains that while the HyperScout instrument has been employed for Earth observation, it originated in the planetary science realm: “We looked, together with ESA, at missions to Jupiter, Mercury and Venus, where hyperspectral measurements helped characterise aspects of these planets. Starting from there we developed HyperScout in collaboration with ESA’s Directorates of Technology, Engineering and Quality and Earth Observation, and we now have a good market share for this type of instruments and applications.

“HyperScout is a perfect instrument to help us with early detection and warning, enabling us to act fast and prevent major catastrophes resulting from events such as wildfires and flooding. In addition, HyperScout can help solve environmental challenges, such as climate change and the resulting adaptation of plants.


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