The Keyhole Nebula (which is also known as the Carina Nebula or NGC 3372) is a glowing cloud of gas, dust, and stars some 8000 light years distant toward the constellation Carina. The Keyhole Nebula contains both bright regions that glow by means of fluorescence emission from ionized gas, and dark regions that obscure background light by means of dense molecular gas and dust.
NGC 2207 & IC 2163 are a pair of colliding spiral galaxies about 80 mly away in Canis Major. So far 4 supernovae have been observed in NGC 2207. The most recent encounter peaked 40 Ma. The smaller galaxy is swinging around counter-clockwise, & is now slightly behind the larger galaxy. Wikipedia
Trisected Nebula Seen in Fresh Detail. A new image of the Trifid Nebula, named by English astronomer John Herschel, was taken with the Wide-Field Imager camera attached to the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in northern Chile. Three different regions of the nebula can be seen in the image.
Col. John H. Glenn, Jr., U.S. Marine Corps 1941-65 WW II, Korean War. Corsair Fighter Pilot. Astronaught. Earned five Distinguished Flying Crosses, six Air Medals, and Congressional Space Medal of Honor. U.S. Senator (D-OH) 1974-99.
NGC 5979, a planetary nebula in Triangulum Australe --- GC 5979 is a planetary nebula of a little over ⅔ of a light-year across, located some 11,700 light-years away from Earth in the southern constellation of Triangulum Australe (the Southern Triangle), while it is moving away from us at only about 23 kilometers per second.
A portion of the Carina Nebula is known as the Keyhole Nebula (NGC 3324), a name given to it by John Herschel in the 19th century. The Keyhole Nebula is actually a much smaller and darker cloud of cold molecules and dust, containing bright filaments of hot, fluorescing gas, silhouetted against the much brighter background nebula.