The First Green Star, WD J1330+6435

Star light, star bright: is there a green star out tonight? Other than the Sun , all stars are so far from Earth that they appear as points in the sky. They are mostly white, but sometimes noticeably red or blue . This color typically relates to the temperature: blue stars are hotter than red stars. What about other colors? The featured image is an illustration showing WD J1330+6435 , a white dwarf star , surrounded by an accretion disk with gas and rocks orbiting the star. White dwarfs are small, faint stars that are left over when a star like the Sun exhausts its nuclear fuel . Astronomers recently found that some white dwarf stars, despite their name, would appear yellow, green, cyan, pink, or purple . In these cases , trace elements that were accreted to these stars interact with the stellar atmosphere and shift its normally white color. But, alas! I wish I may, I wish I might, but they are too faint to see tonight ... Tomorrow's picture: eye in the sky