when was the evidence of the appearance of galaxies found how was it discovered?

twin galaxies - Photo of twin galaxies
India
April 12, 2007 10:56am CST
Hi Friends, Can any one explain this? about galaxies milkyways and how thz scientists came to know about this...its great to have such knowledge
1 response
@pankkzz (24)
• India
25 May 09
yes veerdeep another good Q they came to know by many things initially by watching the skies through telescopes then by space shuttles and satalites after that they learnt from the big activities their sharp guesses and logical imagination!!