The Helix Nebula is an example of a planetary nebula. Though it looks like a bubble or eye from Earth's point of view, the Helix is actually a trillion-mile-long tunnel of glowing gases. In its center ...
But binoculars or even a backyard telescope will give you a much better view. Venus is the space fan‘s darling this week, as a NASA spacecraft prepares to do a fly-by of the planet on Nov. 6 and get a ...