What does the Hubble Constant ($H_0$) quantify?
Answer
The rate at which the universe is expanding right now.
The Hubble Constant is the constant that links velocity and distance, and it specifically quantifies the rate at which the universe is expanding at the present time.
Related Questions
What fundamental relationship is formalized by Edwin Hubble's work?What does the Hubble Constant ($H_0$) quantify?In what units are astronomers typically expressing the Hubble Constant ($H_0$)?What is the significance of an $H_0$ value of $70 ext{ km/s/Mpc}$?In the simplified coasting model, how is the age of the universe estimated using $H_0$?What term describes the expansion rate at any specific time $t$ in the universe's history?Which standard candles are utilized to accurately gauge the distance to much more distant objects?What representative value of $H_0$ is typically predicted when using early universe data like the CMB?What value for $H_0$ is frequently obtained from local measurements based on standard candles?What is the definition of the Hubble Tension?