The night sky can offer some wonderful sights, like distant stars and planets, the milkyway but also meteor showers. The perseids are a prolific meteor shower associated with the comet Swift-Tuttle. To celebrate this wonderful sight, PrimeGrid is running a challenge on the Riesel Problem Sieve subproject. It will start on 10 august 2015 at 18:00 UTC and will run until 12 august 2015, 18:00 UTC.We hope to welcome many of you in this fun challenge and if you have any questions or just want some banter, please do join us in this thread on our forums.

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