The Sun Our Very Own Star Assembled By Ken Mitchell Livermore TOPScience Copy this URL into your browser

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The Sun Our Very Own Star Assembled By Ken Mitchell Livermore TOPScience Copy this URL into your browser

Star Forming Region NGC 3582

Accretion Disk A rotating disk of gas and dust matter that may form around any of a variety of stars or other massive objects. In the case of young stars, accretion disks contain unconsolidated material, such as cosmic dust grains, which may subsequently accrete to form planets and other sizable objects

The Beginning – A Protostar A star's life is a constant battle against gravity, the force that wants to compress it, and pressure support which is trying to hold it up. That battle begins as soon as a molecular cloud begins to collapse into a protostar.

SOHO Best Sun Photo

HR Diagram - Star Sequence

Cutaway of Our Only Thermonuclear Power Plant

Sun Physics Basic Fusion Reactions in the Sun Paste the URL into your browser before starting:

Terrestrial Planets – Close to the Sun Mercury Venus Earth Mars

Mercury

Venus against a starry background

Welcome to Planet Earth

Mars in Opposition, 2001

Outer Planets – The Gas Giants Jupiter Saturn Uranus Neptune

Hubble spots rare triple eclipse on Jupiter

Saturn – from Cassini

Uranus – two views

Spring time on Neptune

Dwarf Planet Pluto and its satellite Charon

Planet Summary Sheet Distanc e (AU)AU Radius (RTE) Mass (RTE) Orbital Period Rotation (RTE) Axial Tilt # of Satellite s O Orbital Inclinatio n Density (g/cm 3 ) Sun , – 36* Mercur y d O 0 7O7O 5.43 Venus d O O 5.25 Earth d O Mars d 1.88y O O 3.95 Jupiter y O O 1.33 Saturn y O O 0.69 Uranus y O O 1.29 Neptun e y O O 1.64 Pluto** y O O 2.03 KAM: 3/29/08

Our Sun’s Life Cycle THE END Cometh