Astrophysicists employ a variety of methods to study the cosmos. Observations are key, and these can be made using telescopes that detect different wavelengths of light, from radio waves to gamma rays. They also use satellites and space probes to gather data from regions of space that are difficult to study from Earth. Additionally, theoretical astrophysicists use computer simulations and mathematical models to predict astronomical phenomena. Laboratory experiments, though more limited, also play a role in understanding processes that can be recreated under controlled conditions, such as nuclear reactions occurring inside stars.
