StarChild: Glossary - NASA
The leftover core of a super massive star after a supernova. Black holes exert a tremendous gravitational pull. C CELSIUS A scale on a thermometer where the interval between the boiling point and the freezing point of water is divided into 100 degrees. Freezing point is represented by 0 degrees and boiling point is represented by 100 degrees.
What causes a "falling star"? - NASA
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.
How do we measure the distances to things in space? - NASA
StarChild Question of the Month for November 2001 Question: How do we measure the distances to things in space? ...
StarChild: Comets - NASA
A comet is made of dirty ice, dust, and gas.When a comet gets close to the Sun, part of the ice starts to melt.
Where do comets come from? - NASA
StarChild Question of the Month for December 2001 Question: Where do comets come from? Answer: Comets are believed to have two sources.
StarChild: The planet Mercury - NASA
Mercury is only about one-third the size of the Earth. It is smaller than any other planet. Mercury is very close to the Sun and has no substantial atmosphere.
Dr. Sally Ride - NASA
Sally Ride was born on May 26, 1951 in Los Angeles, California. She attended Stanford University where she earned a Bachelor of Arts degree in English, a Bachelor of Science degree in Physics, a Masters degree in Physics and a Ph.D. in Physics.
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 Universe - NASA
The universe is a vast expanse of space which contains all of the matter and energy in existence. The universe contains all of the galaxies, stars, and planets.
When did the first stars form in the universe? - NASA
This result surprised many scientists who thought that it would have taken much longer for gravity to pull enough matter together to make a star. This animation (5.0 MB) shows how the structure of the universe evolved from WMAP's "baby picture" of the universe.