The Universe, Big Bang Theory and The Evolution of The Universe Gravitational Waves, Doppler-Shift, Cosmic Microwave Background Star Formation (Stellar Evolution or Life Cycle of A Star) Galaxies The Formation of the Solar System: Nuclear Disc Model (Neo-Laplacian model) Components of the Solar System, Planets and Their Major Moons The Sun’s Internal Structure and Atmosphere, Solar Wind Planets of the Solar System Asteroids, Asteroid Belt, Kuiper Belt, Comets, Meteoroid, Meteor and Meteorite What’s the Closest Star to the Sun? Proxima Centauri or Alpha Centauri? Heliopause ― The boundary of The Solar System? Distant Artificial Objects Exploring the Solar System