A Theorist on Dinosaurs Is Honored

A geologist who proposed the theory that a comet or asteroid smashed into the Earth and killed off the dinosaurs has won a top research award.By nytimes.com

Tracking of Killer Asteroids Runs Low on Money and Short on Time

NASA says there is not enough money in its budget to finish tracking nearby asteroids within a 15-year deadline mandated by Congress.By By WARREN E. LEARY

Long-Studied Giant Star Displays Huge Cometlike Tail

Scientists said that they were stunned to learn that a giant red star zipping through the Milky Way has a turbulent tail stretching trillions of miles across space.By By WARREN E. LEARY

A Comet Is Missing, So Spacecraft Will Go to NASA’s Next Choice

NASA has given its Deep Impact spacecraft a new mission.By By HENRY FOUNTAIN

All Eyepieces on Jupiter After a Big Impact

An amateur astronomer in Australia took one last look through his telescope and discovered the site of a new comet strike on Jupiter.By By DENNIS OVERBYE

Dust in the (Cosmic) Wind

The Perseid meteor shower, which peaks Wednesday, comes from the dust of Comet Swift-Tuttle, whose remains appear to shower down from the constellation Perseus as it moves across the northern sky.By By CHRISTOPHER COKINOS

From a Distant Comet, a Clue to Life

A discovery has added to the prevailing notion that many ingredients for life came from asteroids and comets that made impact with the early Earth.By By KENNETH CHANG

Hot Material Is Discovered in Icy Comets

Samples of a comet brought back by the Stardust spacecraft show that at least some of the icy bodies contain a surprising amount of material formed under high heat.By By WARREN E. LEARY

LONG ISLAND JOURNAL; Another Lohan Shoots for Stardom

Long Island Journal column; Aliana Lohan, 12, of North Merrick, sister of actress Lindsay Lohan, is working on debut album, has won leading role in independent movie and is in talks for network television series; George Flynn, scientist at State University of New York at Plattsburgh, says infrared microscope analysis shows comet dust collected in canister during NASA's Stardust mission consists of crystals of mineral called pyroxene; photoBy By MARCELLE S. FISCHLER

Hello, My Name Is . . .

Bottlenose dolphins with "names," observing comet breakups and more.By By HENRY FOUNTAIN