late july and early august brings the perseid meteor shower to the northern hemisphere. this shower occurs every year when earth crosses the orbital path of comet swift-tuttle. debris from this comet litters the comet's orbit, and you can probably start seeing meteors now if you live in a dark area. we're not into the heavier part of it until the first week of august, which is a good time to begin watching so as to catch glimpses before the largest full moon of the year on august 10th. according to the earthsky website, the wee hours before dawn are when the most meteors streak across the sky. though, they also say that if you watch in the early evening you might catch what is called an
earthgrazer, a long, slow and colorful meteor that travels horizontally across the sky. they say to give yourself a good hour for observing, as the meteors come in spurts with lulls in between. why is it called the perseid meteor shower? because if you trace all the meteors backward, they seem to come from the constellation perseus, who is the son of zeus and the maiden danae, from when zeus visited her in a shower of gold. you can read earthsky's full article
here.
during this same time, the delta aquarid shower can be seen from the southern hemisphere. this meteor shower traces back to aquarius the water bearer, with it's radiant point nearly aligning with the star
skat, or
delta aquarii. if you are watching the sky in the northern hemisphere and you see meteors arcing from the northeast or high in the north, they are from the perseid shower, but if you see them arcing from the south, from aquarius the water bearer, then you are seeing the delta aquarids. (you can read about the delta aquarids
here.)
(the above photo is from thursday's sunset.)