Set your alarm clocks. The Perseid meteor shower, the annual celestial lightshow that com calls the most widely observed and dependable meteor display of the year, will peak tonight and early tomorrow morning.

NASA says this year's show promises to be more spectacular than usual.

"If you see one meteor shower this year, make it August's Perseids or December's Geminids," according to the space agency. "The Perseids feature fast and bright meteors that frequently leave trains, and in 2015 there will be no moonlight to upstage the shower."

And Jupiter's positioning this year will make for even better viewing, as the planet's gravitational field can "slightly perturb the comet particles, just enough to nudge them closer to the Earth," adds.

At peak activity during the shower, the meteor count could be up to 100 meteors per hour, NASA says, with meteors radiating from the direction of the constellation Perseus.

The Washington Post says that "cloud cover forecasts suggest the viewing will be good over much of the Eastern and Western U.S., with the potential for cloudiness from the central Rockies to the Upper Midwest."

NASA plans to livestream the shower, from 10 p.m. ET tonight through 2 a.m. Thursday, at this link:

NPR's Geoff Brumfiel spoke with Rhiannon Blaauw of NASA's Meteoroid Environment Office last year about tips on watching the Perseids. She told him, "Just lie on your back, look straight up, give your eyes time to adjust to the dark; it takes longer than people think."

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