They come in a vast range of sizes, quality and prices at the top end to make you wish you hadn't looked.
Amazon sells the one shown but it is not available. The reason it is included on this page is to show one that is simple, clean-cut and reasonably representative.
Solar System Orrery - Brand: Cochranes Of Oxford
When you click the link here, you are shown how to set the planets on any solar orrery to their "approximate"* place. However, that's up to 2020 and more research needs to be done for later years. That is to say, to be able to predict planet positions however many years ahead you want to go. * It is given that solar distances are unrealistic. It's more to do with approximate angle.
If you want to be precise, this and many orreries include Pluto. It was declared a minor planet in 2006. more You children need to know the eight solar planets and their order.
On the left
Advert
Budding astronomers will love to make their very own Solar System! Position the planets around the sun using the sticks and decorate with our marbling inks (not included).
Each kit contains 10 assorted polystyrene balls, pre-cut foam pieces and wooden sticks. Instructions included. Planet sizes 1cm-10cm. Age 6+.
£5.95
Go to a large toyshop and buy bags of foam balls and bags of various sticks for lower total price and more items for your children to play with together.
No comments:
Post a Comment