Artificial Cloud Created At The Edge Of Space

The study of Earth's mysterious noctilucent clouds got a boost on Saturday, when a rocket was launched to create an artificial cloud at the edge of space.
Update on 23 September: The dust released in the CARE experiment scattered sunlight, creating a bright cloud that could be seen at visible wavelengths for several minutes before it dispersed. The cloud's effects on the ionosphere lingered longer, however, and were detected by radar for about four hours after the dust's release. Researchers are still analysing the data and expect to know more about the results in the coming weeks. Watch a video of the cloud

http://www.newscientist.com/article/dn17822-artificial-cloud-created-at-the-edge-of-space.html