The Cat's Eye Nebula (NGC 6543) is a planetary nebula in the constellation of Draco. Structurally, it is one of the most complex nebulae known, with high-resolution Hubble Space Telescope observations revealing remarkable structures such as knots, jets and sinewy arc-like features. It was discovered by William Herschel on February 15, 1786, and was the first planetary nebula whose spectrum was investigated, by the English amateur astronomer William Huggins in 1864.
Heat Scale of the Universe //Take a visual tour of what’s hot or not in the universe, from the strictly theoretical concept that is absolute zero to the 141,679,000,000,000,000,000,000,000,000,000,000ºK of Planck, the temperature immediately after the Big Bang. http://www.rasmussen.edu/student-life/blogs/main/heat-a-visual-tour/
Star Child - Steven Universe: Young Greg Universe with GALAXY hair ORIGINAL Watercolor painting