This is a picture of the comet Linear S4. First discovered in 1999, the orbit of this comet is still under evaulation. When this picture was taken (June 24, 2000), the comet had a magnitude of approximately 7.0, by the end of August 2000 the magnitude is predicted to reach about 3.0 when the comet's orbit intersects our own.
Here are some more views of the comet Linear S4, along with some links to find out more about the comet:
http://encke.jpl.nasa.gov/whats_visible.html#1999S4
http://members.aol.com/sabiajohn/lasnews.html#headmarker9
This picture is of the Trifid Nebula (M20). The nebula is located in the constellation of Sagittarius and covers an area equivalent to a full moon. The nebula is located 11,000 light-years from earth. Very hot young stars are located in this nebula along with gas and dust. The Sagittarius constellation is very rich with nebulae (Lagoon, Omega/Horseshoe/Swan), and star clusters.
This is the Omega Nebula (M17). It is also known as the Swan or Horseshoe Nebula and is 10,000 light years away and 7th magnitude.
This is the Ring Nebula (M57) which is actually a planetary nebula. The ring ish a shell of gas that the central star threw out. It is 2150 light years from earth and has magnitude of 9.
The Sombrero Galaxy (M104) named for what it resembles is located near the Virgo cluster (however not considered part of the cluster). This is a spiral galaxy that is seen edge on from earth.
The Whirlpool Galaxy (M51) along with a satellite galaxy has a very distinct spiral structure. It is located near Ursa Major (near the end of the handle in the Big Dipper).