• Only one entry per person
  • The prize is to win one copy of the book: Ad Astra: An Illustrated Guide to Leaving the Planet by Dallas Campbell
  • There will be two competition winners, chosen at random
  • Entries must be submitted via Twitter, responding to @BritSciAssoc's Tweets, asking users to "Tweet us the planet you’d love to visit - fictional or real"
  • No responsibility can be accepted for entries not received for whatever reason
  • There is no entry fee and no purchase necessary to enter this competition
  • The winners will be notified by a direct message via their social media account
  • If the winner cannot be contacted or does not claim the prize within five days of notification, we reserve the right to withdraw the prize from the winner and pick a replacement winner
  • The promoter’s decision in respect of all matters to do with the competition will be final and no correspondence will be entered into
  • Any personal data relating to the winner or any other entrants will be used solely in accordance with current UK data protection legislation and will not be disclosed to a third party without the entrant’s prior consent
  • Open only to UK residents
  • The closing date for entries is 23.59pm on Monday 23 October 2017
  • Prizes are non-transferable
  • Entry into the competition will be deemed as acceptance of these terms and conditions