ASTRONOMY
BASICS
AMAZING ATRONOMY FACTS
Some interesting and incredible astronomical facts.
HOW DO THEY KNOW THAT?
Ever wondered how they weigh the Sun? How do we know how far away objects are? Click here to find out.
GRAVITY
A close look at the mathematics of gravity and orbits.
PLANET DATA
All the numbers you need about the planets with some pretty pictures as well.
EXOPLANETS A PRACTICAL GUIDE
How many exoplanets are there? To date, NASA has determined that there are at least 3,730 exoplanets in existence. Discover everything you need to know!
10 CLOSETS STARS TO EARTH
Not many years ago, we didn’t know which of the closest stars to Earth had planets. Today, we know of nearly 4,000 extrasolar planets.
OBSERVING
Check the images sections to see some of our efforts and some of your own images as well!
Taken any good pictures? Please send them in to the “your images” gallery.
WHAT TO SEE
Upcoming night sky events and the best objects to observe.
MESSIER CATALOGUE
The Messier catalogue and other classifications.
THE CELESTIAL SPHERE
How to use celestial co-ordinates.
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