A disappearing plane and a disease's sudden spread. Legalizations, celebrations â and the inexplicable attraction of a dumped bucket of ice water. These are some of the stories that dominated 2014. Now we want your choices.
The brightest star, as viewed from Earth, is Sirius, and it appears bluish-white to the human eye. It is classified as an A1Vm star and shares the color spectrum with other class-A stars.
Betelgeuse, a bright star in the constellation of Orion, is much cooler, about 6,900 degrees F, and so even to the naked eye has an easily identified red hue. The brightest star in the night sky, Sirius (also known as the Dog Star), has a surface temperature of about 18,000 degrees F, which gives it its bluish tinge.