Image Caption: An example of nebulae (and the interstellar medium) can be found in this picture of the Pleiades, an open cluster consisting of approximately 3,000 stars at a distance of 400 light-years (120 parsecs) from Earth in the constellation of Taurus. Image Credit: NASA, ESA, AURA/Caltech, Palomar Observatory Even the most novice of stargazers are […]