d. Man a. Mariner 2 c. Pioneer 1 days. d. Sput a. 29.3 d. 31 the Earth? a. Aryabhata . 2. What was the name of first spacecraft launched by NASA? b. Aryabhata 3. The moon orbits the earth every 30 b-30 c. 27.3 4. Which of the following was the first artificial satellite to be launched to b. Sputnik 1 c. Vostok 1 d. Pione State 'TRUE' or 'FALSE'. 1. Yuri Gagarin was the first person to travel into space. 2. Solar eclipse can be harmful for our eyes. 3. When we see very thin portion of Moon, it is called gibbous Moon 4. The gravity on the Moon is around 1/6th of the gravity on Earth. Answer the following questions in brief. What do you understand by an 'eclipse'? How are craters formed on the surface of the Moon?
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