BBC Sky at Night Magazine

VLT to search Alpha Centauri

The ESO telescope will be used to scan for exoplanets

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The Very Large Telescope (VLT) is to search for exoplanets around nearby star Alpha Centauri, in a recently announced partnershi­p with the Breakthrou­gh Starshot initiative.

Breakthrou­gh Starshot, an endeavour backed by Stephen Hawking, is investigat­ing the feasibilit­y of sending a fleet of nanospacec­raft to the star. Now it has enlisted the help of the VLT to search the Alpha Centauri system for potential targets of interest. The VLT can observe in the infrared, a wavelength at which exoplanets glow brightly making it easy to find them. However, the light of the star is still a million times brighter, blinding instrument­s to potential planets.

By modifying the VLT’s VISIR spectromet­er, the telescope will be able to perform coronograp­hy, where the bright light of the star is blocked out. This will allow VISIR to pick up the infrared glow of orbiting worlds. http://breakthrou­ghinitiati­ves.org

 ??  ?? The VLT will soon get an upgrade to help it search for exoplanets
The VLT will soon get an upgrade to help it search for exoplanets

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