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.
Shop Windows to the Universe Science Store!
The Summer 2010 issue of The Earth Scientist
, available in our online store
, includes articles on rivers and snow, classroom planetariums, satellites and oceanography, hands-on astronomy, and global warming.