ISP Chapter 1 Our Place in the Universe

ISP Chapter 1 Our Place in the Universe - Astronomy Chapter...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Astronomy Chapter 1 Our Place in the Universe STAR - a large glowing ball of gas that generates heat and light through nuclear fusion. PLANET - a round object which orbits a star; cleared out its neighborhood. May be rocky, icy, or gaseous in nature Pluto does now meet this definition. MOON- a rocky or icy object orbiting another object ASTEROID – small rocky object that orbits a star COMMET – relatively small and icy object which orbits a star SOLAR (STAR) SYSTEM – a star and all the material that orbits it, including its planets and moons NEBULA – an interstellar cloud of gas and or dust GALAXY – a great island of stars in space, all held together by gravity and orbiting a common center UNIVERSE- sum total of all matter and energy that is, everything THE HISTORY OF THE UNIVERSE The big bang starts the expansion 5 minutes later, nearly all of the hydrogen and helium forms Expansion proceeds EXCEPT where gravity “wins” : stars, galaxies, clusters Stars create all the elements heavier than helium
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

ISP Chapter 1 Our Place in the Universe - Astronomy Chapter...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online