Comet Lulin, a beautiful green comet with a double tail is fast approaching Earth. Tonight, and the wee hours of Tuesday morning, right around 1 AM, are you best bets for a view. You'll be able to spot Lulin, with the naked eye, barely, in rural areas without light pollution, but a decent pair of binoculars or a backyard telescope will work just fine for a great view. You'll want to look in the southwestern sky about 40 degrees above the horizon near Saturn, which should be fairly bright and easy to spot. The diagram here has a circled X to show the relative position of Lulin at about ten pm in North America on the Monday night, February 23, tonight.
This is another of my favorite Hubble images, taken in January of 2005. It's an image of the Whirlpool Galaxy, NGC 1594, better known as M51, and, just to its right, its much smaller companion galaxy, NGC 5195. Sometimes the two galaxies are referred to as M51a and b.Technically, the image to the right is a four-color mosaic, composed of 96 slightly overlapping images taken with four different filters (hence the lovely colors). The Whirlpool galaxy, as its name and image suggests, is a spiral galaxy, like Earth's own Milky Way.