Question

Read the following paragraphs and write the answers.

Mars is the second closest celestial object to Earth after the Moon. It was sent to Mars by many nations. But since the campaign was difficult, almost half of the campaigns were not successful. But we have done something that we should be proud of. Launched by ISRO in November 2013 at a very low cost, the Mars rover was launched into Mars orbit in September 2014 and gained important information about the surface and atmosphere of Mars.

1. After the moon, which is the closest celestial object to the earth?
2. When did ISRO launch Mars spacecraft?
3. What important information did ISRO’s Mars rover get? 
4. Explain that specific velocity does not depend on the mass of the satellite.

Answer 1

1. The Moon is the closest celestial object to Earth after Earth itself.
2. ISRO launched the Mars spacecraft in November 2013.
3. ISRO’s Mars rover gained important information about the surface and atmosphere of Mars.
4. Specific velocity does not depend on the mass of the satellite because the satellite’s mass cancels out in the formula for specific velocity.