Hubble constant
Like a BOSS: How Astronomers are Getting Precise Measurements of the Universe’s Expansion Rate
Astrophysicists studying the expansion of the Universe with the largest galaxy catalogs ever assembled are ushering in an exciting era…
9 years ago
Spitzer Provides Most Precise Measurement Yet of the Universe’s Expansion
This graph illustrates the Cepheid period-luminosity relationship, which scientists use to calculate the size, age and expansion rate of the…
12 years ago
Using Gravitational Lensing to Measure Age and Size of Universe
[/caption] Handy little tool, this gravitational lensing! Astronomers have used it to measure the shape of stars, look for exoplanets,…
14 years ago
Hubble’s Law
[/caption] "The distance to objects beyond the Local Group is closely related to how fast they seem to be receding…
15 years ago