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  • What causes a falling star? - NASA
    StarChild Question of the Month for August 1999 Question: What causes a "falling star"? Answer: A "falling star" or a "shooting star" has nothing at all to do with a star! These amazing streaks of light you can sometimes see in the night sky are caused by tiny bits of dust and rock called meteoroids falling into the Earth's atmosphere and burning up The short-lived trail of light the burning
  • StarChild: Meteoroids - NASA
    The chance of seeing a meteor with the unaided eye increases after midnight People often refer to meteors as "falling" or "shooting" stars The brightest of the meteors are called fireballs Sonic booms often follow the appearance of a fireball just as thunder often follows lightning At certain times of the year, more meteors than normal can
  • What causes fireballs in the sky? - NASA
    Fireballs were much in the news over the past month due to a big one that was seen in the Illinois, Michigan, and Indiana areas around local midnight on March 26 - 27, 2003 The fireball streaked across the sky and exploded in a bright flash But just what causes the fireball, and how often do they occur?
  • Star Art - NASA
    Star Art - An Introduction to Myths of Different Cultures Star watching has occupied humans from the earliest times Our ancestors studied the night sky and saw shapes and patterns among the stars They often made up stories to explain what they saw The same star constellation was seen very differently by people from different countries, or even different parts of the same country When
  • StarChild: Comets - NASA
    Scientists believe that comets are made up of material left over from when the Sun and the planets were formed They think that about 100,000 million comets orbit the Sun Some comets orbit the Sun like planets Their orbits take them very close to and very far away from the Sun
  • Why do stars twinkle? - NASA
    To our eyes, this makes the star seem to twinkle You will notice that stars closer to the horizon will appear to twinkle more than other stars This is because there is a lot more atmosphere between you and a star near the horizon than between you and a star higher in the sky Go out some night soon and have a look!
  • StarChild: A Learning Center for Young Astronomers - NASA
    StarChild is a learning center for young astronomers ages 5-13 to learn about the solar system, the Milky Way galaxy, and the universe beyond Use the links above to explore the site's topics If you are looking for something a bit more advanced (ages 14+), then head on over to Imagine the Universe!
  • How long does it take to fly to Saturn? - NASA
    The nearest star (after our Sun, of course!) is Proxima Centauri at a distance of 4 2 light years At a speed of 17 km sec (such as what the Voyager 1 spacecraft currently has), it would take about 75,000 years to reach Proxima Centauri
  • How do we search for alien life in the universe? - NASA
    A search for signs of life in other parts of the universe is done by looking at the radio emissions of individual star systems Each star in the system is examined for possible planets that may be orbiting the star An advantage of the newly proposed Allen Telescope is that it can look at more than one star at a time
  • StarChild: The Asteroid Belt - NASA
    An asteroid is a bit of rock It can be thought of as what was "left over" after the Sun and all the planets were formed Most of the asteroids in our solar system can be found orbiting the Sun between the orbits of Mars and Jupiter This area is sometimes called the "asteroid belt" Think about it this way: the asteroid belt is a big highway in a circle around the Sun Think about the





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