Originally Posted by Robh
Wikipedia is a great idea and has a lot of information on all aspects of astronomy and science. I often go to it for convenience but unfortunately what you say is true. You always have to double check the information.
Wikipedia is not the only source of information that perpetuates nonsense, which becomes so called "truth" through constant repetition.
Writers of general astronomy textbooks have been doing this for a long time when they make these three incorrect statements:
- The Milky Way Galaxy is 100,000 light years across.
- Our Galaxy contains 100 billion stars
- The Andromeda Galaxy is like the Milky Way
(it sure isn't! The bulge and disk and halo properties of M31 are very different
from those of the Milky Way)