UPSC

Earth Explained The Earth The Earth is the only known planet that supports life. Its surface is mostly covered by […]

Structure of Sun The Sun The Sun is a huge star, a glowing ball of extremely hot gas called plasma.

Universe and Solar System UNIVERSE The Universe includes everything that exists, from vast galactic megaclusters to the smallest subatomic particles.

Origin and Evolution of Earth The Earth was formed about 4.54 billion years ago. This is an extremely long period,