California - based private spaceflight company Space X has launched which secret mission for United States government?
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What is the name of the spacecraft launched in 2019-20 by ISRO to study the sun?
Which of the following is a tsunami warning sign?
The astronomer who discovered planet Pluto was ___.
In 1981, ISRO launched India's first geostationary satellite called -
Who propounded the homeopathic principle of 'like cures like'?
American astronaut Scott Joseph Kelly commanded the International Space Station Consecutively for 340 days on ___.
Granite is an example of