I want to learn the distance of space objects ..how can I learn it easy?

Question

any websites you can find?

Answer 1

Searching for "astronomic distances", I found these links:

http://janus.astro.umd.edu/astro/distance/
http://www.talkorigins.org/faqs/astronomy/distance.html
http://en.wikipedia.org/wiki/Category:Astronomical_units_of_length
http://en.wikipedia.org/wiki/Cosmic_distance_ladder
http://en.wikipedia.org/wiki/Light-year
http://www.astro.ucla.edu/~wright/distance.htm
http://www.astromart.com/articles/article.asp?article_id=229
http://www.astro.washington.edu/labs/parallax/java_parallax.html