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Galaxy or Star Cluster
Galaxies and star clusters are collections of stars held together by gravity. Galaxies are really big. But how big is big? Even bigger than a million stars? Yes, a million is small in astronomy.
Galileo's Daughter - book review
Most people think of Galileo as the man who is a symbol of the heroic voice of truth against a powerful reactionary Church. However this mythic Galileo is not the one Dava Sobel's book, "Galileo's Daughter", reveals through his faith, his work and his daughter's love.
Gemini – the Celestial Twins
Gemini. A story of the love and loyalty of two brothers parted only by death. Includes a star that's actually a system of six stars, and a giant star that can help us measure distances in space. Contains an object that completely baffled astronomers for twenty years.
Geminids – a December Spectacle
Imagine the scene: a starry night in mid-December. As your eyes begin to adjust to the darkness, you start to see movement in the sky. At some point you definitely see a shooting star – properly called a meteor. Welcome to what many people think is the year's best meteor shower, the Geminids.
George & the Big Bang - book review
Will a secret organization and an evil genius succeed in destroying a big physics experiment and killing the scientists involved? Can George and Annie find and disarm the quantum bomb? How is Schrödinger's cat involved? Another great blend of fantasy and science from Lucy and Stephen Hawking.
George's Cosmic Treasure Hunt - book review
George is sad. The family next door are moving away and things will be so dull without them. Or maybe not! Why is the new Martian rover acting so strangely? Has the search for life met an alien threat to Earth? Lucy and Stephen Hawking take George and the reader on a cosmic adventure.
George's Secret Key to the Universe - book review
In Lucy & Stephen Hawking's book, the hero George used to have a quiet life, but now he's trying to rescue his next door neighbor from a black hole. Here's a lively illustrated story, beautiful color images of the universe, and from the man who knows, a great explanation of what a black hole is.
Millions of people followed the treks of the Martian rovers Spirit and Opportunity as they explored the red planet. In 2009 Spirit became trapped and was last heard from in March 2010. After a year being unable to contact her, on May 24, 2011, with sadness, NASA formally ended her mission.
Gravitational Waves – What Are They?
In February 2016 news of gravitational waves went round the world. But what are these waves sometimes described as ripples in spacetime? To find out let's go back over a century to a time when Albert Einstein was completing the work that would change our view of the Universe.
Gravity - Cosmic Glue
Aristotle's perfect cosmos didn't need gravity to hold it together. However a system with planets orbiting the Sun called for an explanation. In the process, Newton was inspired by a falling apple, but Galileo's experiments with falling bodies didn't involve dropping them off the Tower of Pisa.
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