Robert F. Cahalan was recently elected a Fellow of the American Meteorological Society.
Two 'starburst' galaxies, plus a satellite of our own Milky Way galaxy, represent a new category of gamma-ray-emitting objects detected both by Fermi and ground-based observatories.
Certain gases that cause warming are so closely linked with aerosol production that the emissions of one type of pollutant can affect the quantity of the other.
Using the most distant objects in the Universe to find your way home
In one year of operation, NASA's Fermi Telescope has seen more than 1,000 sources of gamma-rays, but it still can't unseat Einstein's theory of relativity.