- Butterfly Cluster (Wikipedia)
The Butterfly Cluster (cataloged as Messier 6 or M6, and as NGC 6405) is an open cluster of stars in the southern constellation of Scorpius. Its name derives from the resemblance of its shape to a butterfly.
- Trance music (Wikipedia)
Trance is a genre of electronic dance music that emerged from EBM in Frankfurt, Germany, in the late 1980s and early 1990s, and quickly spread throughout Europe.