Terms and conditions:

1. Entries must be submitted online at www.open2.net by no later than 12:00 (noon) Thursday 13th of January 2005. THE COMPETITION IS NOW CLOSED.
   
2. Entrants must supply their name, postal address and e-mail address.
3. Entrants must agree to take part in any post-competition publicity.
4. Only one entry is allowed per entrant.
5. Entries must be the entrant’s own work and the entrant warrants that no-one else is entitled to share in the prize or any other benefit arising from their entry.
6. The judges’ decision is final and no correspondence relating to the competition will be entered into.
7. Some or all of the entries may be displayed on the website.
8. No responsibility will be accepted for ineligible, corrupted, lost or late entries.
9. The prize is one amateur astronomical telescope and a one year subscription to an astronomy magazine. No cash alternative will be substituted for the prize.
10. The winner will be the entry received by the closing date which has given the closest time to the land time – which the judges will be given by the Open University’s Surface Science Package team – and, in the opinion of the judges, the best answer to the tie-breaker.
11. The winner will be notified within 28 days of the closing date by e-mail and by post and the prize will be sent out to the winner within two months after it is awarded.
12. In the event of the land time not being known then the competition will be judged on the tie breaker entries and the level of understanding of the issues affecting arrival time shown by the competition entrants.
13. The correct answer will be available on www.open2.net within 28 days of the closing date.
14. The BBC and the Open University reserves the right to withhold a prize if in the opinion of the judges entries do not reach the required standard.
15. BBC and Open University employees or agents, their immediate families and anyone else connected with the competition are not eligible to enter.
16. Entries cannot be returned.
17. Entries once received become the property of the Open University and entrants irrevocably assign to the Open University all copyright and other intellectual property rights in entries and waive all moral rights in entries in consideration of the entrant having the opportunity to enter the competition.
18. The competition is open to UK residents only. Entries from overseas will not be accepted.
19. By entering the competition, entrants accept and agree to be bound by these rules.