Universe🌌
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...
Baryon Acoustic Oscillations
Sound waves in the primordial plasma that left characteristic distance scales, used as a “standard ruler.” The Role of Primordial Sound Waves In the early universe (before recombination at ~380,000 years...
Baryon Acoustic Oscillations
Sound waves in the primordial plasma that left characteristic distance scales, used as a “standard ruler.” The Role of Primordial Sound Waves In the early universe (before recombination at ~380,000 years...