Science
WHYY-FM’s Dave Heller and astronomer Derrick Pitts celebrate Skytalk’s 18th season on the air by doing what they do best̷ ...
Air Date: January 12, 2009
World clock jumps ahead by a second
Can’t wait another second? Neither can WHYY-FM’s Dave Heller and astronomer Derrick Pitts. A Leap Second was added at 7 p.m. ...
Air Date: January 5, 2009