English: Ionization trail of a Perseid meteor seen against the constellation Corona Borealis with its ring of stars. The trail was visible for only a minute. The sequence shows three 8-second exposures followed by one of 30 seconds (Sequenced top to bottom and left to right).
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.