Who discovered the laws of planetary orbits?
- Galileo Galilei
- Nicholas Copernicus
- Johannes Kepler
- None of them
Who discovered the laws of planetary orbits?
What do you mean by Sunspots?
What do you mean by ‘Black Hole’ in our solar system?
Processes that shape the earth’s surface include:
Which of the following waves are responsible for most of the destructive force of the earthquake?
‘U’ shaped valley is formed by?
Sedimentary rocks are also called?
The shape of the river valley is generally like?
Ox-bow lakes are formed due to?