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(visit the link for the full news article)
An eerie cloud that glowed briefly in the night sky Saturday was no UFO. It was created by humans — more specifically, a NASA rocket built to make clouds that shine at night.
The rocket launched as part of an experiment to create artificial noctilucent — or night-shining — clouds, the highest clouds on Earth. They naturally appear around 50 miles (80 kilometers) above Earth's high latitudes and are also known as polar mesospheric clouds.
Originally posted by freelance_zenarchist
reply to post by allyoop
This article is from Sun., Sept . 20, 2009, why are you posting it now?