What is a light-year and how is it used?? - NASA
A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion …
StarChild: Glossary - NASA
A ACCREDITED An educational institution which has been recognized as maintaining standards that qualify graduates for admission to higher, or more specialized, institutions or professional practice.
Just How Big is this Place - NASA
This activity can be used in conjunction with the StarChild Universe Level 2 information OBJECTIVES: Examine ways of measuring distance Make inferences regarding space travel Identify the distance …
StarChild: Galaxies - NASA
A galaxy contains stars, gas, and dust which are held together as a group by gravity. There may be millions, or even billions, of stars in one galaxy. There are billions of galaxies in the universe. …
StarChild: The Milky Way - NASA
Our Sun is a star in the Milky Way Galaxy. If you were looking down on the Milky Way, it would look like a large pinwheel rotating in space. Our Galaxy is a spiral galaxy that formed approximately 14 billion …
StarChild: Galaxies - NASA
A galaxy is a cluster of stars, dust, and gas which is held together by gravity. Galaxies are scattered throughout the universe and they vary greatly in size. A galaxy may be alone or it may be in a large …
StarChild: The Solar System - NASA
The words " solar system " refer to the Sun and all of the objects that travel around it. These objects include planets, natural satellites such as the Moon, the asteroid belt, comets, and meteoroids. Our …
StarChild: A Learning Center for Young Astronomers
AUDIO: none. VIDEO: Artist's conception of a black hole with swirling accretion disk surrounding it. Jets (perpendicular to the disk) come out of the central black hole. Point of view moves in toward the …
StarChild: A Learning Center for Young Astronomers
children. Particularly my science teachers because I went into science. But not just science teachers.
NASA
What would people be most surprised to find out about you? I think the thing that surprises people most is that I am religious. I'm an elder in my church, which is the Quakers, or The Religious Society of …