Estonia Building Imager For ESA Mission To Intercept Pristine Comet

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ESA’s Comet Interceptor mission due for launch in 2029 will examine a pristine Oort Cloud comet from the outer fringes of our solar system.

To that end, planetary scientists at Estonia’s Tartu Observatory are playing a vital role. They are building the estimated 5-million-euro Optical Periscopic Imager for Comets which, among other things, will characterize gases from the target comet’s nucleus.

The Comet Interceptor will likely launch before it even has a cometary target. But once it arrives at the gravitationally-stable Earth-Sun Lagrange Point 2, it is prepared to remain there waiting for the right opportunity to intercept a long-period comet. OPIC is named in honor of Estonian astronomer Ernst Öpik proposed that there is a massive reservoir of comets lying on the outermost fringes of our solar system, now known as the Öpik-Oort Cloud. It’s from this reservoir of comets that the science target for the Comet Interceptor mission will originate.

 

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