This drawing compares the Earth to the white dwarf, 40 Eridani B. The star is part of a triple star system about 16 light years from Earth in the constellation, Eridanus, "The River". 40 Eridani B is half the mass of the Sun with a diameter about twice that of Earth. It is very heavy for its size.
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The Fall 2009 issue of The Earth Scientist
, which includes articles on student research into building design for earthquakes and a classroom lab on the composition of the Earth’s ancient atmosphere, is available in our online store