A comet that last streaked over the Earth in the Stone Age is making a long awaited pass by tomorrow. The green comet, which will make its closest pass by Earth, will be visible tomorrow at around 6:49 p.m. Eastern at 49 degrees above the horizon. You’ll be able to view it until about 5:57 a.m. on February 2nd. If you have a telescope, it’s best to use it, if not, look for a patch of sky without bright stars, you should see it there.