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Andromeda Galaxy (M31) Fascinating Facts
Imagine yourself under a dark autumn or winter northern hemisphere sky. You're looking towards the W of Cassiopeia, and notice a hazy patch between Cassiopeia and the constellation Andromeda. That is the Andromeda Galaxy (M31). Here are some fascinating facts about this stunning object.
Astronomy is an ancient science, and today a popular profession and pastime. But what attracts people to astronomy? What's special about it? Here are some answers to this question in the words of astronomers through the ages.
Life and Death of Massive Stars Facts for Kids
Stars are all born in the same way, but they live and die in different ways. A star's mass rules how hot it will be, how long it will shine, and how it will end.
Solar System Discoveries Quiz
Since prehistoric times people have known the Sun, the Moon and five planets. The rest of the Solar System had to await discovery by people with telescopes. How many of the discoverers can you identify?
Canis Major - the Greater Dog
In a sky full of gods, heroes and wronged women, there are also four dogs. We have Canis Minor and the two dogs of Canes Venatici, but Canis Major is definitely top dog. It's a prominent constellation that has represented a dog from early Greek times.
Why the Sky Looks Blue
A sunny day with a beautiful blue sky may prompt a child to wonder why the sky is blue. It's a good question. After all, the Sun isn't blue, and even if the sky above us looks blue, the air around us doesn't. The answer has to do with sunlight, Earth's atmosphere, and our eyes.
Astronomy ABC - H for Herschel Space Observatory
The Herschel Space Observatory is the largest telescope ever sent into space. It's an infrared telescope named in honor of William Herschel who discovered infrared radiation, and his sister Caroline who worked with him. What's infrared? Who launched the telescope? What did we learn from it?
Enceladus 10 Amazing Facts
Saturn's moon Enceladus is a strange one. There are eruptions of cold volcanoes. This adds snow to a surface so bright it reflects 99% of the Sun's light, and supplies particles to maintain one of Saturn's rings. And does the moon harbor life in the salty ocean that lies under the ice?
Zodiac Constellations - Quiz
How well do you know the constellations of the zodiac? They are the oldest of the constellations. Here's a little quiz for you to test your knowledge. It's complete with answers and some additional facts about the zodiac constellations.
Astronauts in Memoriam
Traveling into space is an astronaut's dream. However it's a dangerous occupation, both in the realization and in the training. A number of astronauts, almost all American or Russian, have paid the ultimate price for their dreams. Where are their memorials?
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