SUNSET PLANET SHOW: When the sun goes down tonight, step outside and look west. Venus, Mars, Saturn and the crescent Moon are having a lovely 4-way conjunction. It's a great way to warm up for the Perseid meteor shower, which peaks on Thursday night, August 12th. Get the full story from Science@NASA. Sky maps: August 12, 13.
PERSEID METEOR SHOWER: The annual Perseid meteor shower is underway. According to the International Meteor Organization, dark-sky observers are now counting more than 35 Perseids per hour, including many fireballs. Be alert for Perseids from 10 pm on Thursday, Aug. 12th, until sunrise on Friday, Aug. 13th. The darkest hours before dawn are usually best.