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Star System Notes

• Title new notebook page, include date, page number, and add to ToC.

• Use the Cornell Notes Style, as shown on the right.

• Required assignment to retake our second quiz.

Nov 6Nov 6Nov 6Nov 632323232Star System NotesStar System NotesStar System NotesStar System Notes

Star Star Star Star SystemSystemSystemSystem

A star and everything that A star and everything that A star and everything that A star and everything that orbits it, including planets, orbits it, including planets, orbits it, including planets, orbits it, including planets, moons, asteroids, comets, and moons, asteroids, comets, and moons, asteroids, comets, and moons, asteroids, comets, and possibly even other stars!possibly even other stars!possibly even other stars!possibly even other stars!

Binary Binary Binary Binary Star Star Star Star SystemSystemSystemSystem

A star system with two stars, or A star system with two stars, or A star system with two stars, or A star system with two stars, or a double star. Very common!a double star. Very common!a double star. Very common!a double star. Very common!

Some star systems have 3 stars Some star systems have 3 stars Some star systems have 3 stars Some star systems have 3 stars or more, we’ve found up to 7!or more, we’ve found up to 7!or more, we’ve found up to 7!or more, we’ve found up to 7!

Solar Solar Solar Solar SystemSystemSystemSystem

The name of our star system.The name of our star system.The name of our star system.The name of our star system.

ExosystemExosystemExosystemExosystem Star systems beyond our own, Star systems beyond our own, Star systems beyond our own, Star systems beyond our own, all systems other than the Solar all systems other than the Solar all systems other than the Solar all systems other than the Solar System!System!System!System!

• Star System: a star and everything that orbits it (planets, moons, asteroids, comets, even other stars)

• Binary Star System (double star): a star system with two stars that orbit each other.

•Multiple Star System: a star system with three or more stars, we’ve found systems with up to seven (7) stars!!!

• Exosystem: a star system beyond our own Solar System . . . in other words, ALL star systems other than the Solar System.

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• Nebular Hypothesis: our Solar System (and other star systems) formed from a nebula that collapsed into a protostarwith a spinning accretion disksurrounding it 4.6 bya.

• Rock Line: line around a star where rock and metal can become solid. Everything inside rock line is vaporized into gas form.

• Frost Line (also ice line or snow line): line around star where ices can form, allowing larger gas planets to form.

Draw Solar System with 8

planets, asteroid belt and

Kuiper belt. Draw in the rock

line and the frost line.

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• Future of Solar System?

• Planets still migrating slowly, asteroids still bombarding planets and moons, but these are minor adjustments to system, it’s very stable

• In about 5 billion years the Sun will begin to run out of fuel. It will first expand into a red giant star, and probably vaporize the Earth.

• In about 8 billion years, the Sun will explode and leave behind a planetary nebula and a white dwarf star. All remaining planets will be shattered in the explosion!