The Big Bang produced lots of hydrogen and helium and a smidgen of lithium. All heavier elements found on the periodic table have been produced by stars over the last 13.7 billion years. Astronomers analyze starlight to determine the chemical makeup of stars, the origin of the elements, the ages of stars, and the evolution of galaxies and the universe.
- Old star, new trickMon, 30 Apr 2012, 12:37:00 EDT
- Planets can form around different types of starsWed, 13 Jun 2012, 18:42:47 EDT
- First of missing primitive stars discoveredWed, 3 Mar 2010, 14:00:54 EST
- New stars from old gas surprise astronomersWed, 18 Feb 2009, 13:36:26 EST
- Astronomers look to neighboring galaxy for star formation insightWed, 30 Nov 2011, 15:35:07 EST