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Royal Observatory Greenwich
It's the place where time begins: The Royal Observatory, Greenwich, England. Here you can stand on the Prime Meridian of the world with one foot in the western hemisphere and the other in the eastern hemisphere. It represents over three hundred years of astronomical and maritime history.
Sagittarius the Archer
In northern hemisphere summer, the ancient zodiac constellation Sagittarius stands low on the southern horizon. It's a special constellation, for when you see Sagittarius, you're looking into the heart of the Milky Way.
Saturn Facts for Kids
Saturn is golden in the sky, and a telescope shows a ring system to take your breath away. If you could find enough water Saturn would float, and its moons are amazing. But if you don't like freezing weather, 1000-mph winds and lightning storms the size of continental USA, don't plan any visits.
Saturn's Moons – Facts for Kids
Everybody recognizes Saturn's rings, but that isn't all that orbits the planet. There are shepherd moons, a moon with cold volcanoes erupting, a planet-sized moon, and more. It took nearly two hundred years for the first seven known moons to get names.
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.
Science Fair Astronomy Projects
Attention, educators and students! Need help with astronomy ideas for a science fair? Wonder about how to do a project or investigation? Here are some useful sites with suggestions for astronomy-themed projects, as well as plenty of how-to on researching and presenting work.
Searching for Extrasolar Planets
Several dozen planets orbiting stars outside the Solar System have been directly imaged. But as of January 2015 astronomers had discovered nearly two thousand of them. How do they find what they can't see?
Seeing in the Dark - book review
Does amateur equal incompetence? No, says Timothy Ferris in a superb book exploring the role of amateur astronomers in probing the heavens. He reminds us that the root of the word amateur is love, and interweaves the stories of these lovers of astronomy with a grand tour of the universe.
Is it an ill omen, an amazing or terrifying experience, or a great opportunity for scientists? Solar eclipses have been all of these things and more. Read on to find out what it's all about.
Solar System - Our Neighborhood
Come tour the Solar System. It's our neighborhood, the star system in which we live. The Sun's gravity holds it all together - planets, dwarf planets, moons, asteroids, comets, Kuiper Belt objects. See what lies between the Sun and the farthest edge of the Oort Cloud.
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