Run for your lives! Or just look up and watch.
Starting tonight, Mercury, Venus, and Saturn will appear so close together from Earth that they will look like a new constellation or perhaps a sign of the apocalypse. The rare grouping can be viewed through Sunday night, then Monday night Mercury and Venus will be separated by such a small distance they may look like one large new star. One large new start of death! Actually this isn't terribly rare - it happens every 5 - 10 years, so no Armageddon. Yet.
The best time to view the galactic mayhem is 30 to 45 minutes after sunset (about 8:30 p.m. EDT). Look for the planets in the western sky. More details for the geeks.