Spectral lines
About 98 percent of the cosmos is composed of the two simplest elements, hydrogen and helium, mostly in the form of giant gas clouds and stars.
About 98 percent of the cosmos is composed of the two simplest elements, hydrogen and helium, mostly in the form of giant gas clouds and stars.

The man who discovered that man-made chemicals could destroy the ozone layer has died at the age of 84.

The Pelotonia bike ride might be a once-a-year hobby for Powell resident Mitch Phelps, but the cause it supports is his career. A 1992 Ohio Wesleyan graduate, Phelps, 41, has pulled out his mountain bike the past three years. Participants in the grassroots cancer research fundraising bike ride can choose their route and distance, either 25-, 43-, 80-, 102– or 180-mile ride, some that traverse through the hilly regions of Hocking County.
Go out and look at any star in the nighttime sky, and you are looking at an incomprehensibly huge hydrogen bomb. Go ahead. Look. I’ll wait.