A body that revolves around another body is referred to as a satellite. Satellites can be natural, like moons orbiting planets, or artificial, like those launched by humans for communication, weather monitoring, or research. Their orbits allow them to gather data and enhance our understanding of space and Earth.

Our Solar System consists of eight recognized planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. In addition to these planets, it includes numerous asteroids, comets, and meteors.

This diverse array of celestial bodies orbits the Sun, creating a dynamic and complex cosmic environment.

Stars appear to move from east to west across the night sky due to the Earth’s rotation.

As the Earth spins on its axis from west to east, this motion creates the illusion of celestial bodies traveling in the opposite direction.

This phenomenon is observed nightly in various locations.

The first Indian satellite, Aryabhata, was launched on April 19, 1975. It marked a significant milestone in India's space program, providing valuable data for scientific research.

Designed for experiments in various fields, Aryabhata laid the foundation for future advancements in satellite technology and space exploration in India.

Halley's Comet is a famous short-period comet that becomes visible from Earth approximately every 76 years.

Its last appearance was in 1986, and it is expected to return in 2061.

Named after astronomer Edmond Halley, who predicted its periodicity, it has been observed for over two millennia.

The Earth's axis is tilted at 66.5° from the plane of its orbit (the ecliptic). This tilt is also expressed as 23.5° from the vertical.

This axial tilt is responsible for the changing seasons as Earth orbits the Sun, causing varying angles of sunlight on different parts of the planet.