Passion for understanding
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...
The Cosmic Web: Filaments, Voids, and Superclus...
How galaxies clump in vast structures shaped by dark matter and initial fluctuations Beyond Individual Galaxies Our Milky Way is but one among billions of galaxies. Yet galaxies do not...
The Cosmic Web: Filaments, Voids, and Superclus...
How galaxies clump in vast structures shaped by dark matter and initial fluctuations Beyond Individual Galaxies Our Milky Way is but one among billions of galaxies. Yet galaxies do not...