"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 branch of astronomy that deals with the physical properties of celestial objects and the interactions between matter and radiation in the universe.
Astronomy: The study of celestial objects and their properties, including stars, planets, and galaxies.
Physics: The fundamental principles and laws governing matter and energy, including mechanics, electromagnetism, and thermodynamics.
Cosmology: The study of the origin, structure, and evolution of the universe, including the Big Bang theory and the cosmic microwave background radiation.
Astrochemistry: The study of the chemical composition and reactions of interstellar and planetary environments.
Planetary Science: The study of planets and their properties, including geology, atmosphere, and habitability.
Exoplanets: The study of planets outside of our solar system, including their discovery, properties, and potential for habitability.
Astrobiology: The study of the origins, evolution, distribution, and future of life in the universe, including searching for signs of extraterrestrial life.
Stellar Astrophysics: The study of the properties and evolution of stars, including their composition, structure, and life cycles.
Galactic Astrophysics: The study of the structure, properties, and evolution of galaxies, including their interactions and collisions.
High-Energy Astrophysics: The study of the most energetic and extreme phenomena in the universe, including black holes, gamma-ray bursts, and cosmic rays.
Observational Astronomy: The use of telescopes and other instruments to observe, measure, and analyze celestial objects and phenomena.
Astrostatistics: The application of statistical methods to analyze astronomical data and models.
Astroinformatics: The development and application of computational tools and techniques for analyzing astronomical data and models.
Astroengineering: The design and development of instruments and technologies for astronomy and space exploration.
Astronomy Education and Outreach: The communication of astronomical concepts and research to the general public, educators, and students.
Cosmology: The study of the origin, evolution and structure of the universe as a whole.
Planetary science: The study of planets, particularly those within our own Solar System, including their structure, dynamics, and atmospheres.
Stellar physics: The study of the physics of stars, their evolution and behavior, including their formation and death.
Galactic astronomy: The study of galaxies and their properties, including their formation, evolution, and composition.
Extragalactic astronomy: Examines the properties of objects that are outside of our galaxy and range from individual stars to clusters and superclusters of galaxies.
High energy astrophysics: Studies the emission of high-energy particles and electromagnetic radiation from celestial objects such as black holes, neutron stars, supernovae, and galaxies.
Astrochemistry: The study of the chemical processes that occur in space, particularly within interstellar and intergalactic space.
Astro seismology: The study of the internal structure of stars and other celestial bodies through observation of their natural oscillations.
Astrobiology: The study of the origin, evolution, and distribution of life in the universe, including planetary habitability.
Gravitational astrophysics: Study of the Universe through its gravitational rather than electromagnetic effects, including gravitational wave astronomy.
"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."