|Top Right: Venus|
Bottom Left: International Space Station as it passes through Orion, just under the "belt"
I discovered a website that lists satellite flybys. I found it just in time to - in theory - spot the Hubble Space Telescope. Unfortunately, I either missed it or couldn't see it. I will be consulting this site in the future, though!
Another great site I found tonight is Tonight's Sky. I recommend checking it out and discovering what you can see in your sky tonight.
A great resource for monthly viewing is SkyMaps.com. Here is the May 2012 list. They also have a free download each month.
On this last day of the month, I learned that April is Global Astronomy Month. For more information, visit Astronomers Without Borders.
As the midnight hour approaches, I feel inclined to say, "Happy May Day!"