Nebulae are vast clouds of gas and dust between the stars. Some are stellar nurseries, others are remnants of dead stars.
Andromeda the Chained Princess
Andromeda stands in the northern sky eternally chained to her rock. She is one of the five constellations that Ptolemy described in the second century, all part of one particular ancient Greek myth. In the constellation is a quadruple star, a blue snowball, exoplanets and spiral galaxies.
Astronomy Photographer of the Year 2014
Thereīs a serene aurora, both a violent Sun and an eclipsed one, a stellar nursery and a stellar graveyard, and many more superb pictures. The Astronomy Photographer of the Year 2014 winners were announced in September and you can see all of them.
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.
Chemical Cosmos - book review
"The Chemical Cosmos: A Guided Tour" is an astronomy book about chemistry - or perhaps a chemistry book about astronomy. Itīs an engrossing guided tour that will take you from the baby Universe through the first stars, the formation of solar systems and to our search for the origins of life.
Cosmic 4th of July
What links the USA's Independence Day holiday, the Crab Nebula and NASA's Deep Impact spacecraft? What links the American War of Independence with the planet Uranus? And what is the Fireworks Galaxy? Here's the story.
Cosmic Ghosts, Ghouls and Vampires
Astronomers use colorful language for cosmic objects. But unlike ghosts, ghouls and vampires in horror stories, the cosmic ones arenīt scary late at night. Here are tales of the birth, evolution and death of stars, a blinking demon and a star that, at Halloween, seems like the Sunīs ghost.
Cosmic White Christmas
If youīre dreaming of a white Christmas, the cosmos may have something of interest. How about deep snow on one of Saturnīs moons, a gigantic Christmas tree whose lights are baby stars, a snowman on an asteroid or an Einstein ring?
Creepy Crawlies in Space
What was the first Earth creature to go into space? Not a dog, but a fruit fly. Insects and arachnids have been mini-astronauts for over sixty years. They have also inspired the naming of heavenly objects.
Galactic Winter Games
Welcome to the Galactic Winter Games, a starry tribute to Earthīs Winter Olympic Games. Itīs a tour of some really cool cosmic sights as well as some hot ones, such as one of the biggest explosions in the Universe.
Gemini - the Celestial Twins
Gemini. A story of the love and loyalty of two brothers parted only by death. Includes a star thatīs 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.
Life and Death of the Sun
In the distant future the Sun will be many times its present size and thousands of times brighter. It will seed the Galaxy with elements like carbon and oxygenperhaps for life on a world yet unborn. Then it will collapse into a tiny dead sphere. For a time, a beautiful nebula will mark its place.
Nebulae are titanic clouds of gas and dust - celestial gossamer in the spaces between the stars. They're stellar nurseries, stellar graveyards and dark constellations. Some of their mysteries have been penetrated by infrared telescopes, but the cloaking dust still keeps some secrets.
Nebulae - Ten Facts for Kids
Nebulae are great clouds of gas and dust in the spaces between the stars. Some of them are made from dying stars. Others are the nurseries for new stars. Here are ten facts about these surprising objects.
Stars Ten Facts for Kids Astronomy Homepage | Editor's Picks Articles | Top Ten Articles | Astronomy Site Map
Stars are nuclear reactors. If a really big one took the Sunīs place, it would swallow up the Sun and everything as far away as Jupiter. Yet others arenīt much bigger than Jupiter. Big stars donīt live very long and die in a blaze of glory. Smaller ones live for billions of years.
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