Approximately 6000 astrophysicists are estimated to be working in the world today. This number may vary slightly depending on the source, but it is generally agreed upon that there are around 6000 professionals in this field.
Astrophysicists are scientists who study the physical and chemical properties of celestial objects and the phenomena that occur in the universe. They use a combination of physics, astronomy, and mathematics to understand the origins, evolution, and behavior of planets, stars, galaxies, and other objects in space.
To become an astrophysicist, one typically needs to have a strong background in physics, mathematics, and astronomy. This usually involves obtaining a bachelor's degree in a related field, followed by a graduate degree in astrophysics or a related field. A PhD is often required for research positions in this field.
Astrophysicists can work in a variety of settings, including universities, research institutions, government agencies, and private companies. They may also pursue careers in teaching, science communication, or consulting. Some astrophysicists may also choose to work in other fields, such as engineering or data science.
Some current areas of research in astrophysics include studying dark matter and dark energy, understanding the formation and evolution of galaxies, and investigating the properties of exoplanets (planets outside of our solar system). Other areas of interest include gravitational waves, black holes, and the search for extraterrestrial life.