the dramatic lives of stars - national optical … dramatic lives of stars with images from...
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The Dramatic Lives of Stars
with images from "The Universe at your Fingertips 2.0" Astronomical Society of the Pacific
The Sun
The Sun
Carina Nebula
Orion Nebula
Pleiades
Main Sequence Star: Sun
SOHO movies The Solar Heliospheric Observatory
http://sohowww.nascom.nasa.gov/gallery/Movies/movies2.html http://umbra.nascom.nasa.gov/images/
SOHO movies The Solar Heliospheric Observatory
Main Sequence Stars
Albireo
Color is linked to temperature. Red=?, Blue=?
Color is linked to temperature. Red=cooler, Blue=hotter
Main Sequence Stars
Albireo
Where does a star’s energy come from on the main sequence?
Nuclear fusion fuels stars
Nuclear fusion fuels stars
Almost all elements (except hydrogen and some helium) were formed in stars via nuclear fusion
Why doesn't fusion happen on Jupiter, or the Earth?
Aldebaran
Ring Nebula
Red supergiants can form elements as heavy as iron via nuclear fusion
Betelgeuse
Betelgeuse
Supernova 1987A
Crab Nebula
What about planets?
Orion Nebula
Protostar: HH-30
Artist’s Rendition