This week the shows include: Feb 11: Nature's Most Precise Clocks May Make 'Galactic GPS' Possible by Kevin John and Paul Ray; Feb 12: 41st Lunar and Planetary Science Conference Preview by Bob Hirshon, AAAS; Feb 13: BLAST! by Nancy Atkinson; Feb 14: Look For Me Up There by Carolyn Collins Petersen; Feb 15: The First Astronomers by Brains Matter; Feb 16: How Did the Earth Form? by Stuart Clark; Feb 17: 80th Anniversary of the Paragould Meteorite by Ken Renshaw.