Top Results for Observational Cosmology

The cosmic microwave background (CMB) is faint electromagnetic radiation detectable across the universe. It represents the residual heat from the early cosmos, specifically emitted around 380,000 years after the Big Bang. This radiation provides a snapshot of conditions in the very young universe an...

Hubble's law describes the observed relationship between a galaxy’s distance and its recession velocity due to the expansion of the universe. Edwin Hubble discovered that more distant galaxies appear to move away from Earth at faster speeds. This finding is fundamental to cosmology, providing observ...

Edwin Hubble was a 20th-century American astronomer whose observations fundamentally reshaped our understanding of the cosmos. He demonstrated definitively that galaxies reside outside the Milky Way and established the principle of universal expansion for the universe. His work provided crucial evid...

Adam Riess is an American physicist renowned for his pioneering work in observational cosmology. His research utilizing Type Ia supernovae provided critical evidence supporting the accelerating expansion of the universe. This discovery fundamentally altered our understanding of cosmic evolution and...

John Carlstrom is an American observational cosmologist and professor at the University of Chicago. He serves as the project director for the South Pole Telescope, an instrument specifically designed to observe the cosmic microwave background (CMB) radiation. His research focuses on measuring the sp...

John C. Mather is a renowned American physicist specializing in cosmology. His groundbreaking observational work focused on the Cosmic Microwave Background radiation, providing critical data about the early universe. He received the 2006 Nobel Prize in Physics for his contributions to this field. Ma...

Baryon acoustic oscillations represent remnants of sound waves that propagated through the primordial plasma of the young universe. These fluctuations in density, initially caused by the interplay between gravity and pressure, provide a crucial benchmark for understanding the expansion history and l...

Brian P. Schmidt is a prominent modern astronomer specializing in cosmology. His groundbreaking work analyzing Type Ia supernovae provided crucial observational evidence supporting the theory of dark energy and the accelerating expansion of the universe. This research earned him a share of the 2011...

Allan Rex Sandage was an American observational astronomer who took over Edwin Hubble's cosmological research program at the Palomar Observatory. He spent several decades attempting to measure the Hubble constant to determine the exact age and expansion rate of the universe. In 1960, Sandage and Tho...

Hiranya Peiris is a British-Sri Lankan cosmologist and astrophysicist who serves as a professor at Stockholm University. Her research focuses on the physics of the early universe, specifically cosmic inflation and the cosmic microwave background. She is well-known for her work analyzing data from th...