Abstract
Cosmology became a rigorous, quantitative branch of astrophysics with a strong theoretical foundation backed by abundant data. The big bang model, which states that almost 14 billion years ago the universe started expanding from a state of extremely high density and temperature, was able to explain galaxy motions, the abundance of hydrogen and helium, and the properties of the cosmic microwave background (CMB), the remnant heat from the expanding and cooling gas. The latest maps of the cosmos have surveyed hundreds of thousands of galaxies, whose clustering have grown from primordial fluctuations.
Original language | English (US) |
---|---|
Pages (from-to) | 54-61 |
Number of pages | 8 |
Journal | Scientific American |
Volume | 290 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2004 |
All Science Journal Classification (ASJC) codes
- General