What is rhe posibility of finding a similar system within the milky way galaxy?

What is the major component of Venus's atmosphere? How long does it take the moon to complete one rotation? What enables a rocket to be launched into the air? What was William Herschel's man contribution to science? What is the diamonds crystal system? What planet that favours the existence of life most closely? What makes stuff fluffy? When using a light microscope if you want the field of view to be larger you would use? What is a Non example of satellite? Why do tears fall when people cry? What year was the strobe light invented? What distance was used to define the astronomical unit? Where in the country does the sun shine the most? What is tonights weather? Why is Zeus' symbol a thunder bolt and eagle? Why are observations are important? Do tornadoes never touch the ground? What is the purpose of the chandra xray observatory? Are sounding rockets still in use? How the satrack is working?