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Cassini-Huygens the Prime Mission
Saturn: magnificent rings, a planet-sized moon, and dozens of smaller moons. Three spacecraft had flown by before Cassini-Huygens was launched in 1997. But this mission wouldn't just fly by and snap some photos. It was going to get up close and personal.
Cassiopeia the Queen
High in the sky, circling the north celestial pole are the distinctive stars of Cassiopeia, the boastful queen who nearly destroyed her kingdom. The Milky Way runs through the constellation and it's full of star clusters, galaxies and evidence of the life cycles of stars.
Cats in the Sky
There are three constellations named for dogs, but what about cats in the sky? There is astrocat Felicette who went into space and returned safely to Earth, but also constellations of big cats and a pawprint 50 light years across.
How does the composition of a star affect the temperature? In 1925 a young woman solved this puzzle in her doctoral thesis. Her analysis was a great breakthroughs in astrophysics. Otto Struve described it as the most brilliant Ph.D. thesis ever written in astronomy.
Celestial Sleuth book review
A "celestial sleuth" solves puzzles in art, history and literature using astronomy. Why did Munch have a blood-red sky in "The Scream"? How did British sentries miss Paul Revere rowing across Boston Harbour under a full Moon? Which meteor shower did the characters in James Joyce's "Ulysses" see?
Centaurus the Centaur
Half-man, half-horse, Centaurus strides across the southern sky. Its myths and legends go back thousands of years and it's full of marvelous sights. Planets, black holes, an enormous diamond and colliding galaxies are just some of them.
Cepheus the King
An ancient Greek tale of pride and passion is played out across the sky, and involves five constellations including Cepheus the king. In the constellation Cepheus there are stars being born and stars at the end of their lives, including those which will die in a blaze of glory.
Ceres Facts for Kids
Bode's Law predicted a planet between Mars and Jupiter. The Sky Police were looking for it, but Giuseppe Piazzi found it on New Year's Day 1801. Then someone found another one. And another one. We know of hundreds of thousands of asteroids now. Discover Ceres - planet, asteroid and dwarf planet.
Cetus the Sea Monster
Whale or monster? Benign plankton-eating creature? No, a terrifying colossus, a hybrid with gaping jaws and the powerful scaly coils of a sea serpent. This is the constellation Cetus. The monster fell to the hero Perseus, but the stars and deep sky objects are impressive.
Chamaeleon the Southern Stellar Lizard
Chamaeleons lived in lands exotic to 16th-century Europeans. Yet although color-changing lizards are fascinating, Chamaeleon the constellation is a small, dim southern sky constellation with no associated mythology. Why does it even exist? Is there anything of interest there?
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