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BellaOnline's Astronomy Editor

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 F E A T U R E   A R C H I V E  

Archive by Date | Archive by Article Title

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.

Top Ten Astronomy Stories of 2013
What were the big astronomy events of 2013? Here are my top ten choices and they include a big bang over Russia, a Moon goddess and Jade Rabbit, a telescope in the high Andean desert to look for the first galaxies, and the launch one of the most ambitious space missions ever.

Constellation or Asterism
Constellations and asterisms are both patterns of stars. So what is a constellation? And If Saturn is in the constellation Virgo, has it left the Solar System? Why is the Big Dipper an asterism and not a constellation?

Monoceros the Unicorn
Did you know that there is a unicorn constellation? Certainly Monoceros isn't a classical constellation, and it's almost too faint to see. But it has a lot of interesting stars and other objects in it.

Star Names in Harry Potter Stories
In the Harry Potter books there are a number of characters that are named for stars and constellations. You can find out more about these stars - and for those that don't know the books, there's a bit of background on the characters.

Starbirth
People once thought that stars were eternal and unchanging. Today we know that they have life cycles of birth and death. Here is the story of how a star like our Sun is born.

Jupiter's Moons – Facts for Kids
Jupiter has at least 67 moons. Some of them are only half a mile long, but one is bigger than the planet Mercury. Which moon has hundreds of volcanoes, and which one has a deep ocean under an icy surface? Find out here.

Voyager 1 – Gas Giants and a Last Look Homeward
When a rare planetary alignment opened up the outer Solar System, Voyager 1 was sent forth. It observed the gas giants Jupiter and Saturn and their moons. At nearly 4 billion miles from the Sun, the probe turned and took one last picture of home before continuing its journey to the stars.

Packing for Mars - book review
If you think being an astronaut is a glamorous occupation, Mary Roach's book “Packing for Mars” will bring you down to Earth. Playing in free-fall looks like fun, but without gravity, eating, hygiene and dealing with waste are not fun. Here's the lowdown. Still want to go to Mars?

Scale of the Universe 2 - website
How big is the Universe? And how small? This website takes you from yoctometers - unbelievably small - to yottameters – just as unbelievably big. Navigate up or down from the human scale, with drawings and diagrams that make sense of the numbers. A great tour for everyone.

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Red Dwarfs - Ten Facts for Kids

Life and Death of the Sun

Triton – Captive Moon of Neptune

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