Since 2020, aggregated from related topics
High-redshift objects refer to astronomical objects, such as galaxies, quasars, and cosmic structures, that are located at extreme distances from Earth and therefore have high redshift values. Redshift is a measurement of the increase in wavelength of light emitted by an object due to the expansion of the universe, with higher redshift values indicating greater distance from Earth. Studying high-redshift objects offers valuable insights into the early universe and the formation and evolution of galaxies and other structures. By observing these objects, astronomers can investigate the conditions and processes that existed in the universe billions of years ago, shedding light on the origins of cosmic structures, the nature of dark matter and dark energy, and the evolution of galaxies over cosmic time scales. Researchers use a variety of telescopes and instruments, including space-based observatories like the Hubble Space Telescope and ground-based telescopes with advanced imaging and spectroscopic capabilities, to observe and study high-redshift objects. These studies contribute to our understanding of the history and dynamics of the universe and help address key questions in cosmology and astrophysics.