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Big Bang Theory
How did our universe come to be? The Big Bang theory is the explanation that most scientists currently accept. Let's look at what we mean by a theory, what the Big Bang story is and why it's not as crazy as sounds.
Bode and Bode's Law
Johann Elert Bode, the author of the greatest star atlas of the Golden Age of star atlases, is better known today for Bode's Law. Strangely, Bode's Law is neither a law nor original to Bode. So what was it? How did it inspire the Celestial Police? How did Neptune ruin it all?
Boötes the Herdsman
This ancient constellation contains black holes as massive as a billion Suns, extrasolar planets and a meteor shower acquired from an extinct neighbor. Its brightest star, a red giant 25 times the diameter of the Sun, is a sign that spring is here.
Buying Astronomy Presents - for Adults
If you have someone interested in astronomy amongst your friends or family, there is a wide range of gift possibilities. Here are some suggestions as to what to look for and where you might find it.
Cancer the Crab
Cancer the crab scuttles across the late winter sky, well away from its nemesis Hercules. Cancer is a zodiac constellation, the Tropic of Cancer is named for it, and it has existed for over three thousand years. Yet it seems to be a dim and unremarkable constellation. Why all the attention?
Captured Moon - Triton Facts for Kids
Neptune's big moon Triton was nameless for over a hundred years after its discovery. And it was so far away that astronomers knew almost nothing about it. Then Voyager 2 visited and saw active ice volcanoes on a moon that is probably a cousin to Pluto.
Caroline Herschel was an intelligent young woman trapped in domestic servitude by her mother. Her brother William rescued her and trained her as a singer. After he discovered the planet Uranus, the two of them ended up forming a great partnership whose work revolutionized the study of astronomy.
Carrington Event – Biggest Solar Storm on Record
Dazzling aurorae filled the skies. Birds thought it was morning, people thought the world was ending. The telegraph didn't work. But strangely, sometimes the telegraph operators could send messages without a power supply. This was the Carrington Event, the biggest solar storm ever recorded.
Carrying the Fire - Book Review
What was it like to be one-third of the Apollo 11 crew? Michael Collins, the man in the command module that didn't land on the Moon, tells a fascinating story of astronaut training and space travel. Originally published in 1974, there was a Fortieth Anniversary edition of Carrying the Fire in 2009.
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.
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