Stars and planets aren't the only thing that populate the galaxy. Giant clouds of gas and dust, called "nebulae" (the Greek plural term for "clouds") are also out there. These are places where stars are born, or sometimes are simply the remains of stars that have died. Some of the weirdest "dead stars" are actually neutron stars and black holes. Th.
Astronomy 2e is written in clear non-technical language
With the occasional touch of humor and a wide range of clarifying illustrations. It has many analogies drawn from everyday life to help non-science majors appreciate
On their own terms
What our modern exploration of the universe is revealing.
Our own solar systemis an active area of study. Early observers noticed that most stars did not appear to move. But, there were objects that seemed to wander against the backdrop of stars. Some moved slowly, others relatively quickly throughout the year. They called these "planetes", the Greek word for "wanderers". Today, we simply call them "plane.
If you find an old copy
Please let the website manager know of the official Astronomy Notes website at www.astronomynotes.com. These documents were created by Nick Strobel for the introductory astronomy courses he teaches. They are copyrighted by Nick Strobel. This website is offered to the net as a resource in astronomy education.
