What is the universe?

The Universe consists of everything one can cognize through one’s senses and through observations using instruments.

The Sun and the Moon are components of the Universe one can easily observe but some objects too faint or too far away can easily only be observed through instruments like telescopes.

What are the main components of the Universe is general terms?

 The Universe consists of a vast emptiness called space with unknown boundaries, containing matter and energy in various forms.

In what forms does matter exist in the Universe?

Matter exists in the form of stars, plants, comets, satellites, meteors, asteroids, galaxies etc.

In what forms does energy exist in the Universe?

Energy exists in the form of heat, light, X-rays, microwaves, gamma rays, radio waves etc. What the eyes detect is only a minute range of wavelengths and frequencies (visible light) from a vastly broader spectrum of electromagnetic radiation. The heat and light from the Sun is a part of the energy can be detected only through instruments.

Does the Universe remain steady and unchanging?

No. The Universe is constantly changing with the passage of time.