The search for planets beyond our solar system may be a little easier, thanks to a new comparison of sun-like stars that has revealed a key difference in the chemistry of stars that have planets and their barren cousins and solved a long-standing mystery about our own sun's chemistry.
The solar mystery revolves around the abundance of the element lithium in the sun.
1 Comments in Response to 60-Year-Old Solar Mystery Finally Explained
http://www.nature.com/news/2009/091111/full/news.2009.1078.html
http://www.nature.com/nature/journal/v462/n7270/edsumm/e091112-03.html