... It shines with the brightness of 100 billion Suns. ... Comet Hyakutake and the Milky Way . ... Two years ago, the Great Comet of 1996, Comet Hyakutake, inched across our northern sky during its long orbit around the Sun. ... Doomed Star Eta Carinae . ... But no one knows when - it may be next year, it may be one million years from now. Eta Carinae's mass - about 100 times greater than our Sun - makes it an excellent candidate for a full blown supernova. ... The Dunes Of Mars . ... Sun Dance . ...