Solar System - Single MCQs (Page 5)

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Q41. Northern hemisphere tilts towards sun during?...Q42. Rotational speed of earth around sun is equal to?...Q43. Neil Armstrong was first man who set foot on?...Q44. To explore Mars planet, in 2004 Martian surface was explored by safe landing of?...Q45. "percentage of total mass of sun" as compare to "the total mass of solar system"...Q46. A greenhouse gas is?...Q47. Average temperature of earth is?...Q48. Planet which is nearest to sun is?...Q49. Huge rocks which revolve around a star are called ?...Q50. In 1957, first artificial satellite was built by soviets and its name was?...