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Course: Big History Project > Unit 3
Lesson 1: How Were Stars Formed? | 3.0- ACTIVITY: The Life of a Star
- ACTIVITY: Infographic —Life Cycles of the Stars
- WATCH: Unit 3 Overview - Stars and Elements
- ACTIVITY: Unit 3 Vocab Tracking
- WATCH: How Were Stars Formed?
- ACTIVITY: Threshold Card — Threshold 2 Stars Light Up
- WATCH: Threshold 2 — Stars Light Up
- WATCH: Elements - A Brief Big History (H2)
- ACTIVITY: This Threshold Today
- ACTIVITY: DQ Notebook 3.0
- READ: Gallery — Structure in the Universe
- READ: Gallery — Stars
- Quiz: How Were Stars Formed?
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ACTIVITY: Infographic —Life Cycles of the Stars
Compare and contrast the different paths of low-mass and high-mass stars, and their dynamic consequences. Download a PDF of Life Cycles of the Stars infographic.
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- What type of nebula do stars form from?(9 votes)
- A nebula of high density with hydrogen and helium(4 votes)
- Wouldn't the stars that were formed before our sun die now what kind of an effect does it have on our solar system ?(4 votes)
- it depends on the particular star some live for longer and some uses less fuel(3 votes)
- Where does the black hole lead to?(4 votes)
- A black hole doesn't lead anywhere. It is simply an extremely dense body of mass.(3 votes)
- If our universe hasn't been around long enough to prove the exsistance of the black dwarf than why does The Life Cycle of Stars PDF say that white dwarves have a lifespan of 10 to the 15 power through 10 to the 25 power?(3 votes)
- That is what our current physical models predict.(3 votes)
- What would happen if the earth collided with a black hole?(3 votes)
- The Earth would be pulled in and merged into the black hole.(3 votes)
- How long does it take a high-mass star to go through each life stage?(3 votes)
- What are the forces involved in the lifecycle of a star? What I mean is: how does a nebulae become a high mass star, and how does it become a low mass star. How does this continue for the rest of the stars?(2 votes)
- no way guys my homies are in the super nova right now!(1 vote)
- how and where is a star born.(1 vote)
- How will the suns life end?(1 vote)
- All stars die, scientist predict that the sun will expand into a red giant: The sun will swell and become so large that it will engulf Mercury, Venus, and possibly Earth.
Next the sun will eject its outer layers: The sun will eject its outer layers in the form of a planetary nebula.
Then the sun compress into a white dwarf: The sun's core will be compressed by gravitational forces, and the rest of the sun will expand. The sun will then slowly cool and fade away as a white dwarf, which is a dead star that has used up all its nuclear fuel.
Don't worry though !! All of this will happen in 5 BILLION year from now.(1 vote)