Lost in space

Behold the wonders of the night sky with an easy-to-build planetarium! This kit is fully customisable so you can see exactly what constellations should be visible on a clear night. Simply orient the base plate in line with the poles (North and South), then enter your coordinates and the date and time to reveal your very own celestial sphere. (If you don’t know your coordinates, just ask the internet!)

Planetarium kit, blue half sphere, marked with constellations, suspended on a frame above a light.Professor plums logo with

For your chance to win a Creator Planetarium from Professor Plums (, follow this decision tree by choosing an answer at each branch. It will help you imagine where you’re lost in space! You can arrive at any one of the six destinations, depending on the decisions you make. Send us a drawing of your answer.

a decision tree: Imagine you'er lost in our solar system - are you on a planet? if yes, are you on a gas giant or a terrestrial planet? if gas giant, are you on the largest or the coldest planet? largest starts with J, coldest starts with N. otherwise, if you're on a terrestrial planet, are you on the hottest or smallest planet? the hottest starts with a V, the smallest starts with an M. Otherwise, if you're not on a planet, are you orpiting Earth? orbiting Earth starts with M not orbitin Earth starts with S

How to enter

To be in the running to win one of these fantastic prizes, photograph your entry and email it to by 31 May 2021. Include your name, age, address and Double Helix subscriber number*. Get a parent’s permission, and ask them to sign each entry. The best entries in each competition will win.

*Don't know your subscriber number? Check the address label that came with your magazine or subscribe now.

Terms and conditions of entry

1. To be valid, all entries must include name, address, age of entrant and Double Helix subscriber number. 2. All entries become the property of CSIRO and will not be returned. 3. Entering the competition assigns copyright to CSIRO. 4. Entries will be judged on creative merit, not by chance. 5. Age will be taken into consideration when judging. 6. All decisions on competitions are final and will not be discussed further. 7. Winners will be notified by mail and the names of competition winners only will be published three issues later. 8. CSIRO shall not be liable for any damage or loss suffered in connection with any of the prizes. 9. Any change in value of the prize between the publishing date and the delivery date is not the responsibility of CSIRO. 10. In the case that prizes become unavailable after the publishing date, CSIRO will send an alternative prize. 11. The closing date for this issue's entries is 31 May 2021. 12. Competition entries must be the entrant's own work. 13. It is the responsibility of the entrant to ensure copyright of their entry is not assigned elsewhere. 14. Winners should allow six weeks for prize delivery.


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