The second most spectacular thing I've seen in the sky was a double Iridium flare. At first, it just looked like any other visible satellite. Slowly, the brightness grew, until it was about as bright as Venus. Just as it was fading, the second one followed. If you're interested in seeing one in your neighborhood, "iridflar" is one package for calculating passes. (The most spectacular thing I've seen in the sky was a shuttle re-entry; the Iridium flares are a pretty distant second.)
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The second most spectacular thing I've seen in the sky was a double Iridium flare. At first, it just looked like any other visible satellite. Slowly, the brightness grew, until it was about as bright as Venus. Just as it was fading, the second one followed. If you're interested in seeing one in your neighborhood, "iridflar" is one package for calculating passes. (The most spectacular thing I've seen in the sky was a shuttle re-entry; the Iridium flares are a pretty distant second.)