Feb 18th, 2005 · Seventy-five years ago, astronomer Clyde Tombaugh discovered the planet Pluto at Lowell Observatory in Flagstaff, Ariz. Today, scientists in Flagstaff are still hard at work, researching Pluto's mysteries. Sadie Babits of Arizona Public Radio reports.
Feb 11th, 2005 · Astronomers have been racing to take the first photo of a planet beyond our solar system, and they may have finally done it. But whether other scientists accept this as the first planet ever caught on camera depends a lot on how they define the word "planet." A precise definition remains elusive.
Jan 21st, 2005 · Scientists operating the robotic Mars rovers say they've made a startling discovery -- a large, iron-heavy meteorite resting on the surface of the red planet.
Jan 7th, 2005 · We look at a new NASA probe on a deliberate collision course with a comet, and at efforts to protect planet Earth against other space-borne threats.
Jan 3rd, 2005 · One year ago, the first of the two Rovers bounced down on the surface of Mars. NPR's Joe Palca looks back over the year in which "Spirit " and "Opportunity" roamed around the red planet and sent back a wealth of pictures and new data.
Dec 27th, 2004 · Working backward from the genes of living animals, biologists have reconstructed part of the DNA sequence of the mammal from which humans descended. The earliest mammal on the planet was a small rodent-like creature that existed some 70 million years ago. NPR's Joe Palca reports.
Dec 9th, 2004 · NPR's Noah Adams talks with Ira Flatow, host of Talk of the Nation Science Friday, about an upcoming meteor shower and an unusual alignment of the planets.
Dec 3rd, 2004 · Scientists exploring Mars via the rover 'Opportunity' published 11 papers detailing the progress of the research being done in an area called Meridiani Planum. The results, they say, are the first geological and geochemical documentation of water on the Red Planet.