Deep Space Deep Space NotesNotes

Deep Space Notes

Stars•Fusion•Life Cycle•H-R Diagram

Galaxies•Types

Universe•Big Bang•Evidence

oCBRoRed Shift

StarsStars

•Stars make sunshine through the process of nuclear fusion. Hydrogen atoms smash together with such force they create a new element, Helium.

StarsStars

•Stars make sunshine through the process of nuclear fusion. Hydrogen atoms smash together with such force they create a new element, Helium.

Fusion in the Sun Applet

StarsStars

•Stars go through a “life cycle”. They enter the main sequence when fusion starts and “die” when Hydrogen fuel is used up.

StarsStars

•Stars go through a “life cycle”. They enter the main sequence when fusion starts and “die” when Hydrogen fuel is used up.

StarsStars

•Stars can be classified based on their temperature, color, size, and luminosity (brightness).•ESRT page 15.

HR .ppt

StarsStars

•Stars can be classified based on their temperature, color, size, and luminosity (brightness).•ESRT page 15.

GalaxiesGalaxies

•Stars are not randomly distributed around space. They form groups of billions of stars called galaxies.

GalaxiesGalaxies

•Galaxies take many shapes.

GalaxiesGalaxies

•Galaxies take many shapes.

M81

GalaxiesGalaxies

•Galaxies take many shapes.

M101

GalaxiesGalaxies

•Galaxies take many shapes.

M74 Galaxy

GalaxiesGalaxies

•Galaxies take many shapes.

Barred Galaxy

GalaxiesGalaxies

•Galaxies take many shapes.

Starburst Galaxy

GalaxiesGalaxies

•Galaxies take many shapes.

Sombrero Galaxy

GalaxiesGalaxies

•Galaxies take many shapes.

The Devil's Mask

GalaxiesGalaxies

•Our solar system is in the Milky Way galaxy; a large barred spiral.

Us

GalaxiesGalaxies

•Our solar system is in the Milky Way galaxy; a large barred spiral.

Us

Galaxies

HUDF .mov

GalaxiesGalaxies

•Stars are not randomly distributed around space. They form groups of billions of stars called galaxies.•Galaxies take many shapes.•Our solar system is in the Milky Way galaxy; a large spiral.

UniverseUniverse

•Everything.

UniverseUniverse

•The universe is believed to have expanded from an infinitely dense and infinitely hot point. The Big Bang.

UniverseUniverse

•Evidence that supports the Big Bang model of the universe includes the red-shift of distant galaxies and cosmic background radiation.

UniverseRed Shift of Distant Galaxies

•All galaxies have a color that is redder than they should be. This is caused by the moving of the galaxy away from the Earth. The Doppler Effect.

UniverseCosmic Background Radiation

•If the universe had a beginning, there should still be left over heat. The CBR is the left over heat of the big bang.

Deep Space Notes

Stars•Fusion•Life Cycle•H-R Diagram

Galaxies•Types

Universe•Big Bang•Evidence

oCBRoRed Shift