"Astrophysics 'seeks to ascertain the nature of the heavenly bodies, rather than their positions or motions in space–what they are, rather than where they are.'"
The study of the physical properties and phenomena of objects and systems in the universe. Topics include stellar structure and evolution, cosmology, and the properties of interstellar and intergalactic gas.
Astronomy: The study of celestial objects and phenomena, such as planets, stars, galaxies, and the universe as a whole.
Physics: The study of matter and energy, including various topics such as mechanics, thermodynamics, electromagnetism, and quantum mechanics.
Cosmology: The study of the origin, structure, and evolution of the universe.
Planetary Science: The study of planets, including their formation, geology, and atmospheres.
Astrobiology: The study of the potential for life to exist elsewhere in the universe, including the exploration of extraterrestrial environments.
Astrophysics: The study of the physical properties of celestial objects and phenomena, such as gravity, radiation, and magnetic fields.
Stellar Evolution: The study of how stars form, evolve, and eventually die.
Galaxies: The study of the large-scale structures of the universe, including galaxies, clusters of galaxies, and superclusters.
Black Holes: The study of astrophysical objects that exhibit extreme gravitational forces which prevent anything, including light, from escaping beyond the event horizon.
Nuclear Astrophysics: The study of the processes of nuclear fusion and nucleosynthesis that occur within stars.
Astrochemistry: The study of the chemical processes and interactions that occur in space, including the formation of molecules and compounds.
Gravitational Waves: The study of ripples in space-time caused by the movement of massive objects, such as colliding black holes or neutron stars.
Dark Matter and Dark Energy: The study of the invisible substances believed to make up a significant portion of the universe's mass and energy.
Observational Astronomy: The study of celestial objects and phenomena based on direct observation, using telescopes and other instruments.
Space Exploration: The study of the exploration of space, including manned and unmanned missions, and the search for extraterrestrial life.
Astrostatistics: The application of statistical techniques and methods to data from astronomical observations.
Astroinformatics: The use of computer science and data analysis techniques to process large amounts of astronomical data.
Instrumentation: The design and development of instruments and observatories used in astronomical research.
Stellar Astrophysics: Study of stars, their formation, evolution, and death.
Galactic Astrophysics: Study of galaxy formation, dynamics, and structure.
Extragalactic Astrophysics: Study of objects and phenomena beyond our Milky Way galaxy, such as quasars and active galactic nuclei.
Cosmology: Study of the origins, structure, and evolution of the universe.
High Energy Astrophysics: Study of energetic astrophysical objects such as black holes, neutron stars, and supernovae.
Astrochemistry: Study of the chemical composition and reaction processes in space, including the formation of molecules and complex organic compounds.
Planetary Astrophysics: Study of planets, moons, and other objects in our solar system and beyond.
Astrobiology: Study of the possibility of life beyond Earth, including the search for habitable exoplanets.
Astrostatistics: Use of statistical methods to analyze astronomical data and make predictions.
Interdisciplinary Astrophysics: Applications of astrophysical techniques and concepts to fields such as mathematics, physics, and computer science.
"Among the subjects studied are the Sun (solar physics), other stars, galaxies, extrasolar planets, the interstellar medium, and the cosmic microwave background."
"Astrophysicists apply concepts and methods from many disciplines of physics, including classical mechanics, electromagnetism, statistical mechanics, thermodynamics, quantum mechanics, relativity, nuclear and particle physics, and atomic and molecular physics."
"Properties examined include luminosity, density, temperature, and chemical composition."
"Some areas of study for astrophysicists include their attempts to determine the properties of dark matter, dark energy, black holes, and other celestial bodies; and the origin and ultimate fate of the universe."
"In practice, modern astronomical research often involves a substantial amount of work in the realms of theoretical and observational physics."
"Topics also studied by theoretical astrophysicists include Solar System formation and evolution; stellar dynamics and evolution; galaxy formation and evolution; magnetohydrodynamics; large-scale structure of matter in the universe; origin of cosmic rays; general relativity, special relativity, quantum and physical cosmology, including string cosmology and astroparticle physics."
"Among the subjects studied are the Sun (solar physics), other stars, galaxies, extrasolar planets, the interstellar medium, and the cosmic microwave background."
"Emissions from these objects are examined across all parts of the electromagnetic spectrum."
"Astrophysics 'seeks to ascertain the nature of the heavenly bodies, rather than their positions or motions in space–what they are, rather than where they are.'"
"Some areas of study for astrophysicists include their attempts to determine the properties of dark matter, dark energy, black holes, and other celestial bodies."
"Properties examined include luminosity, density, temperature, and chemical composition."
"Astrophysicists apply concepts and methods from many disciplines of physics, including classical mechanics, electromagnetism, statistical mechanics, thermodynamics, quantum mechanics, relativity, nuclear and particle physics, and atomic and molecular physics."
"Topics also studied by theoretical astrophysicists include Solar System formation and evolution; stellar dynamics and evolution; galaxy formation and evolution; magnetohydrodynamics; large-scale structure of matter in the universe; origin of cosmic rays; general relativity, special relativity, quantum and physical cosmology, including string cosmology and astroparticle physics."
"Emissions from these objects are examined across all parts of the electromagnetic spectrum."
"Because astrophysics is a very broad subject, astrophysicists apply concepts and methods from many disciplines of physics."
"Some areas of study for astrophysicists include their attempts to determine the properties of dark matter, dark energy, black holes, and other celestial bodies; and the origin and ultimate fate of the universe."
"In practice, modern astronomical research often involves a substantial amount of work in the realms of theoretical and observational physics."
"Astrophysics 'seeks to ascertain the nature of the heavenly bodies, rather than their positions or motions in space–what they are, rather than where they are.'"
"Topics also studied by theoretical astrophysicists include Solar System formation and evolution; stellar dynamics and evolution; galaxy formation and evolution; magnetohydrodynamics; large-scale structure of matter in the universe; origin of cosmic rays; general relativity, special relativity, quantum and physical cosmology, including string cosmology and astroparticle physics."