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What are constellations? - NASA
Constellations can be a useful way to help identify positions of stars in the sky. Constellations have imaginary boundaries formed by "connecting the dots" and all the stars within those boundaries are labeled with the name of that constellation.
88 Officially Recognized Constellations - NASA
88 Officially Recognized Constellations. Latin Name English Name or Description; Andromeda: Princess of ...
Problems in Space Experts' Solution - NASA
Stellar map (of the Moon's constellations) Primary means of navigation: 3: Self-inflating life raft: CO 2 bottle in raft may be used for propulsion: 9: Magnetic compass: Magnetic field on Moon is not polarized; worthless for navigation: 14: Fifteen liters of water: Replacement for tremendous liquid loss on lighted side: 2: Signal flares: Can be ...
Problems in Space Activity - NASA
Items: signal flares, self-inflating raft which uses carbon dioxide canisters for inflation, two .45 caliber pistols, parachute silk, food concentrate, box of matches, solar-powered heating unit, stellar map of the Moon's constellations, eighteen meters of nylon rope, magnetic compass, fifteen liters of water, first aid kit containing needles ...
Who figured out the Earth is round? - NASA
Around 350 BC, the great Aristotle declared that the Earth was a sphere (based on observations he made about which constellations you could see in the sky as you travelled further and further away from the equator) and during the next hundred years or so, Aristarchus and Eratosthenes actually measured the size of the Earth!
Why is Polaris the North Star? - NASA
The Earth spins on its "axis". This axis is an imaginary line running through the Earth. If you were to be high above the Earth, looking straight down along the axis, all the points on Earth would appear to move in circles around the axis.
StarChild: A Learning Center for Young Astronomers - NASA
2018年5月14日 · This site is intended for students in grades K through 8. 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.
StarChild: The Solar System - NASA
What is the solar system? It is our Sun and everything that travels around it. Our solar system is elliptical in shape.
Star Art - NASA
Initiate a discussion of constellations by reading to students (or directing them to read for themselves) the introduction to the Star Art activity found in Universe Level 2 of StarChild. Explain that many star groups were named for the people, animals, and objects our ancestors imagined seeing when they looked at the stars.
Parallax - NASA
Parallax. Astronomers derive distances to the nearest stars (closer than about 100 light-years) by a method called stellar parallax.