Ques No.1: When and by whom were the rings of Saturn discovered?
Ques No.2: Light takes nearly 4 years to reach us from the nearest star. What is the distance between that star and the earth?
Ans: 3.78 x 1016 m
Ques No.3: "Galileo Satellites", named after their discoverer, are four large moons of the planet
Ques No.4: Titan, the largest moon in the solar system, is also the largest moon of
Ques No.5: Who was the first to speculate that Venus is completely covered with clouds?
Ans: Christian Huygens
Ques No.6: Who was the first to determine that the day on the Mars was, like ours, roughly twenty-four hours long?
Ans: Giordano Bruno
Ques No.7: How long does a sun-ray take to travel from the sun to the earth?
Ans: 498 sec
Ques No.8: The comet, named after Edmund Halley, reappears after a time interval of every
Ans: 76 years
Ques No.9: Sometimes the moon passes between the sun and the earth this phenomenon is known is
Ans: Solar eslipse
Ques No.10: Which city of Iran has the biggest refinery of the world?