What Is Space Aerospace Engineering 2011 Project Lead
- Slides: 10
What Is Space? Aerospace Engineering © 2011 Project Lead The Way, Inc.
Our Universe • What is the universe? – Everything. All that we see and cannot see.
Our Universe • What is the universe? – Everything. All that we see and cannot see. • How big is the universe? – Hubble Space Telescope sees 10 billion light years – Light-year is the distance that light travels in one year, about 6 trillion miles – Radio waves sense few billion light years beyond
Our Universe • What is a galaxy? – An assembly of stars and related matter and gas, all held together by mutual gravity
Our Universe • What is a galaxy? – An assembly of stars and related matter and gas, all held together by mutual gravity • What is a star? – A star is a sphere of plasma
Our Solar System • What is a planet? – An orbiting body large enough to become round due to its own gravity – Large enough to dominate the vicinity of its orbit
Our Solar System • Order of the planets – Terrestrial or Earth-like planets • Mercury, Venus, Earth, and Mars – Gas giants • Jupiter, Saturn, Uranus, and Neptune – Dwarf planet • Pluto
Our Universe • What is a moon? – Natural satellite of a planet
Our Universe • How old is the universe? – Started with the Big Bang – 14 billion years ago
References National Aeronautics and Space Administration (NASA). (2010). Retrieved from http: //www. nasa. gov/
