Earth is entering a stream of debris from Halley's Comet, source of the annual eta Aquarid meteor shower. Because the shower's radiant is located below the celestial equator, southern hemisphere observers are favored, but even northerners will be able to see at least a few flecks of Halley-dust disintegrating in the atmosphere when the shower peaks this weekend. The best time to look is during the hours before sunrise on Sunday, May 6th. Bright moonlight will cap the meteor rate at about 30 per hour.

In recent nights, NASA's all-sky meteor network has picked up a number of early eta Aquarid fireballs. This one was bright enough to shine through the glow of sunrise and clouds over Tullahoma, Tennessee, on April 29th.
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© NASA

According to analysts at NASA's Meteoroid Environment Office, this particular speck of comet dust hit the atmosphere traveling 62 km/s (139,000 mph) and disintegrated about 84 km (52 mi) above Earth's surface.

The full Moon of May 5-6, 2012, with interfere with the visibility of the eta Aquarid peak. Radar signals, however, penetrate moonlight with ease. Tune into Space Weather Radio for live echoes from eta Aquarids passing over the US Air Force Space Surveillance Radar in Texas.