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Eris – Facts for Kids
At first astronomers thought Eris was bigger than Pluto and that it was a tenth planet. But both Eris and Pluto ended up as dwarf planets. Eris is now farther away from the Sun than any known object except for some comets. It's so cold that its atmosphere has frozen and is on the ground.
Eris and Pluto - They're Not Twins
For nearly ninety years Pluto was our ninth planet. Then in 2006, much to the annoyance of some, it was no longer a planet, but a dwarf planet. What happened? Eris happened. Some call Eris and Pluto twin planets, but they aren't twins. Eris has a secret.
Europa Facts for Kids
Astronomers are very interested in Jupiter's moon Europa. They think that it has a large ocean covering the moon under its icy crust, and that it would be a good place to look for life.
European Astrofest 2016
It's great to have access to “the Universe under one roof”. When European Astrofest comes to the Kensington Conference Centre in London, it saves many light years of travel. Here are some highlights of the 2016 event.
European Astrofest 2017
It was the 25th Astrofest – and how things have changed since the first one! No one knew then if other stars had planets. Pluto was still a planet and its discoverer Clyde Tombaugh was still alive. The Rosetta mission was in the very early planning stages, and Cassini-Huygens hadn't been launched.
Exotic Creatures of the Southern Sky
Constellations telling the ancient tales of gods and heroes are still in use by astronomers. But there are only 48 classical constellations, and the skies around the south celestial pole can't be seen from the Mediterranean, so those constellations are more modern. Here are some of them.
Exotic Exoplanets Tour
We're used to a tidy Solar System. But there are some pretty strange planets orbiting stars far, far away. On one it doesn't rain water, it rains rock. Another has the density of cork. One has a double sun. And what would you do with a diamond the size of a planet?
Experience the Aurora - film review
Try to imagine seeing the northern lights dancing across the sky above you. A film on a flat screen couldn't duplicate this. But what about one made to be projected on the dome of a digital theater? This was the aim of "Experience the Aurora."
Exploring Stars and Planets - book review
Looking for an astronomy book for readers 8-14? Philip's has a brand new edition of Ian Ridpath's best seller. Clearly written and illustrated with up-to-date images, it's the story of the Solar System. But there are also glimpses into galaxies, exploding stars and the history of the Universe.
Exploring the Apollo Landing Sites
NASA sent the Lunar Reconnaissance Orbiter (LRO) to the Moon to spy out sites for future manned missions. It doesn't look like they'll be sending anybody to the Moon, but LRO has documented the Apollo landing sites. Astronomy writer and space expert Ian Ridpath takes us to the Moon for a look.
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