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C20

The Universe
a data set by npritikin
created December 7, 2016
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FAMILY TREE
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QuestionAnswer
How stars formstars are formed from clouds of dust and gas and go through different stages as they age
Life cycle of a high mass starnebula, high mass star, red supergiant, super nova, neutron star or a gas dust/black hole
LIfe cycle of a low mass starnebula, low mass star, red giant, white dwarf, black dwarf
When does Nuclear fusion start in stars and which elements are fused firstTakes place in the core, combines hydrogen atoms to helium. Each time 2 particles fuse, energy is released
What type of star is our sunG2V star (yellow dwarf). It will expand and become a red giant then eventually a white dwarf
nebulalarge cloud of dust and gas in space
low mass star(small star) these stars fuse hydrogen atoms into helium thru nuclear fusion. And they burn for billions of years
red giantstar runs of hydrogen and starts to cool, expands. a large reddish star late in life cycle.
supernovaa huge explosion where all the elements heavier than iron are formed
HR diagramused to help astromers see how stars change over time. Shows brightness, size and temperature of stars
2 variables tha stars are classified by acc to HR diagram1. luminosity (brightness) and 2. temperature
white dwarfwhen there are no more light elements to use and star collapses. a small dim and dense star about the size of earth
black dwarfhow stars end their life
neutron starwhen the core of a star collapses
black holeformed when a leftover core has a mass greater than 3 solar masses. Nothing can escape its gravitational pull. Can not be seen directly.
clustergroup of stars or galaxies
superclusterlarger groups of clusters or galaxis
2 galaxies closest to Milky wayAndromeda and Canis Major
Spiral galaxyforms a circle with arms. our solar system is spiral galaxy
Elliptical galaxyno arms. round or egg shaped
Irregular galaxylack regular shape or structure. Large Magellanic cloud is one.
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