A preview for you of websites of astronomical interest - some background, the main features, good and bad points.
Atlas of the Universe [offsite link]
Here is the visible universe on different scales, starting with a map of the stars within 12.5 light years. Each zoom then expands the view by 10-20 times: out through the Milky Way and the smaller galaxies held by its gravity, the Virgo Supercluster made up of groups of galaxies held together by gravity. This is really still our local area, as there are some ten million superclusters in the visible universe.
There is additional information and a glossary to help your understanding.
Cassini Mission and Website
The space probe Cassini has been sending home fantastic pictures of Saturn and its satellites since 2004, and its mission has been extended twice. Its website has a wealth of images and some interesting material for teachers, students and astronomy fans.
Heavens-Above – website
You can see the International Space Station from where you live. But when and from which direction? What are the two bright stars you´ve seen after sunset? What´s an Iridium flare? The website Heavens-Above is a tool for beginners and experienced observers to answer questions like this.
Scale of the Universe 2 - website
How big is the Universe? And how small? This website takes you from yoctometers - unbelievably small - to yottameters – just as unbelievably big. Navigate up or down from the human scale, with drawings and diagrams that make sense of the numbers. A great tour for everyone.
Links marked with the [offsite link] designation point to websites not associated with BellaOnline.com. BellaOnline.com is not responsible for the material found there.
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