Our Sun


The Sun’s Rotation Sections of the Sun The Core The Radioactive Zone The Convection Zone The Photosphere The Chromosphere The Corona       As illustrated the sun rotates in an anti-clockwise direction as observed from its most northern point. The solid core rotates in much the same way as all the solid planets in

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Cepheid Variables

Cepheid Variables

        What are Cepheid Variables? Why are they useful? Measuring the Milky Way Hubble’s work with Cepheid Variables Existence of other galaxies The Expanding Universe Dark Energy Dating the Universe     What are Cepheid Variables?   Certain stars called Cepheid Variables have changes to their magnitude which increase and decrease at

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