Everything you need to know about Stars

Composition

• Hydrogen
• Helium
• Carbon
• Oxygen and other elements
• Stars are held together by their own gravity

Fusion

• Process by which powers the stars
• 2 atoms of hydrogen fuse to become an atom of helium
• Some mass of hydrogen is converted to energy to power the star

Nebulas

• Massive cloud of dust, hydrogen, helium gas and plasma.
• A place where stars are born
• After a while matter collapses to form stars

main sequence Star

• Start off as clouds and gas and are drawn together by gravity called protostars
• Reaching temperature until fusion occurs between hydrogen and helium creating main sequence star
• Length of life depends on mass
• Smaller stars will turn into white dwarfs
• Larger stars turn into red giants then white dwarfs

Red giants

• Dying star
• Occurs when fusion stops
• Helium fuses with carbon causing expansion
• Temperature causes star to appear red

White Dwarfs

• Last stage of life for small and medium starts
• Contain the mass of the sun but are about the same size of the Earth making them very dense
• Radiate all energy until they turn into black dwarfs

Neutron Stars

• Dense core after Supernova explosion
• Gravity pushes electrons and protons together into neutrons
• Gravity is 2 billion times stronger than it is on Earth

Red dwarf

• Cloud of dust and and gas are drawn together by gravity
• Reaches Critical temp and begins fusion
• Smallest type of star
• Burn through hydrogen less rapidly

Supernova

• Primary source of heavy elements in our universe
• Largest explosion that takes place in space
• Explosion of a star that has come to the end of its life
• Only occurs with large stars
• Accumulates matter until nuclear reaction occurs
• Collapses under its own gravity

Black holes

• Stellar black holes: larger star collapses on itself creating a very dense pulling space objects into it
• Supermassive black holes: In the center of every galaxy, said to be formed from tiny black holes coming together
• Intermediate black holes: occurs when cluster of stars collide in a chain of reactions

Brown dwarfs

• Failed stars
• Range between stars and gas planets
• Temperatures can be as low as a household oven or the human body

work cited

• http://www.space.com/23772-red-dwarf-stars.html
• http://www.space.com/22471-red-giant-stars.html
• http://www.space.com/22180-neutron-stars.html
• http://www.space.com/6638-supernova.html
• http://www.space.com/22437-main-sequence-stars.html
• http://www.space.com/15421-black-holes-facts-formation-discovery-sdcmp.html
• http://www.space.com/24467-brown-dwarfs-failed-stars-explained-infographic....