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To achieve a geosynchronous Earth orbit, a spacecraft should initially be launched into an elliptical orbit with what approximate apoapsis altitude?
An exoplanet is defined as:
Which one of the following longitudes determines the Indian standard time?
Consider the following statements regarding International borders:
1. Mizoram and Nagaland share a border with Myanmar only.
2. Sikkim is ...
Which ocean forms the western and southern boundaries of Portugal?
Which mountain range is known as the 'Roof of the World'.
How long does it take for light to travel from the Moon to Earth?
Which two countries share the world's longest land border?
Consider the following statements:
1. Great Nicobar is the northernmost island of the Nicobar Islands Archipelago.
2. The Mongoloid Shompe...
Where is Lake Baikal located?