قراءة٪ s
Anisotropies and Inhomogeneities
The distribution of matter and slight temperature differences that shape structure formation Cosmic Variations in a Nearly Uniform Universe Observations show our universe is extremely uniform on large scales, yet...
Anisotropies and Inhomogeneities
The distribution of matter and slight temperature differences that shape structure formation Cosmic Variations in a Nearly Uniform Universe Observations show our universe is extremely uniform on large scales, yet...
Dark Energy Surveys
Observing supernovae, galaxy clusters, and gravitational lensing to probe the nature of dark energy A Mysterious Cosmic Accelerant In 1998, two independent teams discovered an unexpected finding: distant Type Ia...
Dark Energy Surveys
Observing supernovae, galaxy clusters, and gravitational lensing to probe the nature of dark energy A Mysterious Cosmic Accelerant In 1998, two independent teams discovered an unexpected finding: distant Type Ia...
Measuring the Hubble Constant: The Tension
Discrepancies in local vs. early-universe measurements fueling new cosmological questions The Importance of H0 The Hubble constant (H0) sets the current expansion rate of the universe, typically expressed in units...
Measuring the Hubble Constant: The Tension
Discrepancies in local vs. early-universe measurements fueling new cosmological questions The Importance of H0 The Hubble constant (H0) sets the current expansion rate of the universe, typically expressed in units...
Gravitational Lensing: A Natural Cosmic Telescope
Using foreground mass concentrations to magnify and distort background objects Einstein’s Prediction and the Concept of Lensing Gravitational lensing is a consequence of General Relativity—mass (or energy) curves spacetime, so...
Gravitational Lensing: A Natural Cosmic Telescope
Using foreground mass concentrations to magnify and distort background objects Einstein’s Prediction and the Concept of Lensing Gravitational lensing is a consequence of General Relativity—mass (or energy) curves spacetime, so...
Redshift Surveys and Mapping the Universe
Charting millions of galaxies to understand large-scale structure, cosmic flows, and expansion Why Redshift Surveys Matter For centuries, astronomy primarily cataloged objects as points on a two-dimensional sky. The third...
Redshift Surveys and Mapping the Universe
Charting millions of galaxies to understand large-scale structure, cosmic flows, and expansion Why Redshift Surveys Matter For centuries, astronomy primarily cataloged objects as points on a two-dimensional sky. The third...
The Cosmic Microwave Background’s Detailed Stru...
Temperature anisotropies and polarization revealing information about early density fluctuations A Faint Glow from the Early Universe Shortly after the Big Bang, the universe was a hot, dense plasma of...
The Cosmic Microwave Background’s Detailed Stru...
Temperature anisotropies and polarization revealing information about early density fluctuations A Faint Glow from the Early Universe Shortly after the Big Bang, the universe was a hot, dense plasma of...