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.
Deneb. Also known as Alpha Cygni, Deneb lies around 2,500 light years from Earth and is the brightest star in the constellation, this huge star is a blue-white supergiant around 200 times larger in diameter than the sun and is estimated to be around 200,000 times more luminous.