Astrophysics................?

I'm going to be a freshman in high school and am interested in how the universe works, dimension, and time travel. Is this considered astrophysics? And what is the difference between astrophysics and astronomy? And is this a good hobby? What info do I need to understand it? Thanks :)|||Astrophysics is the branch of astronomy that deals with the physics of the universe, including the physical properties (luminosity, density, temperature, and chemical composition) of celestial objects such as galaxies, stars, planets, exoplanets, and the interstellar medium, as well as their interactions. The study of cosmology addresses questions of astrophysics at scales much larger than the size of particular gravitationally-bound objects in the universe. Because astrophysics is a very broad subject, astrophysicists typically apply many disciplines of physics, including mechanics, electromagnetism, statistical mechanics, thermodynamics, quantum mechanics, relativity, nuclear and particle physics, and atomic and molecular physics. In practice, modern astronomical research involves a substantial amount of physics.





Astronomy is a natural science that deals with the study of celestial objects (such as stars, planets, comets, nebulae, star clusters and galaxies) and phenomena that originate outside the Earth's atmosphere (such as the cosmic background radiation). It is concerned with the evolution, physics, chemistry, meteorology, and motion of celestial objects, as well as the formation and development of the universe.





Yes, you have an excellent hobby! Keep it up! You essentially need to understand everything or at least the majority of topics mentioned above that cover astrophysics. Take a lot of science and mathematics courses in high school if you truly want to become an astrophysicist. Good luck!