Astronomy
Astrophysics
Astrophysics is a branch of astronomy that applies the principles of physics and chemistry to understand the nature of celestial bodies and phenomena. It encompasses the study of the Sun, stars, galaxies, exoplanets, the interstellar medium, and the cosmic microwave background, analyzing their luminosity, density, temperature, and chemical composition.
Planets
A planet is a celestial body that orbits a star, is massive enough to achieve a nearly round shape through its own gravity, and has cleared its orbital path of other debris. The Solar System comprises eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Beyond our Solar System, thousands of exoplanets have been identified, exhibiting a diverse range of characteristics.
Space Exploration
Space exploration is the investigation of celestial bodies and cosmic phenomena beyond Earth's atmosphere through the use of astronomy and space technologies. It encompasses both robotic missions and human spaceflight, aiming to expand scientific knowledge, develop new technologies, and explore the potential for human habitation beyond Earth.