Quantcast

Latest Ian Roederer Stories

Astronomers Find Arsenic And Selenium In Milky Way's Halo
2012-04-30 09:27:50

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. Now for the first time, astronomers have detected the presence of arsenic and selenium, neighboring elements near the middle of the periodic...


Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
Related