
Martian Meteorite Harbors Life's Building Blocks
Organic molecules inside space rock were probably the result of plain old chemistry

Martian Meteorite Harbors Life's Building Blocks
Organic molecules inside space rock were probably the result of plain old chemistry

Don't Wreck the Mars Program
Devoting all the funding to just one mission would be a mistake


NASA Tests Robot Surgeon for Missions to Moon, Mars
Extended missions to the moon or Mars mean that astronauts may need improved medical care and even the ability to perform surgery in space

Mars Images Reveal Few Signs of Recent Liquid Water
New pix throw cold water on reports of recently flowing streams

Planet Survived Brush with Red Giant
Will the sun destroy Earth? Astronomers come closer to an answer.

Clues To Longshot Life On Mars
A reinterpretation of old Mars lander data leads a researcher to conclude that the tests actually may have found life signs. Steve Mirsky reports.

100 Years Ago in Scientific American - The Riddle of Mars
Mars and Its Canals. By Percival Lowell. Illustrated. The Macmillan Company. New York and London, 1907. Octavo. Pp. 393.

A Tale of Two Exoplanets: One Incredibly Hot, the Other Extremely Windy
New studies of two exoplanets find that one keeps its hot side excruciatingly hot and the other may be stirred by 5,000 mph winds

South America's Missing Mammals
Startling fossil discoveries in the Chilean Andes reveal an unexpected menagerie of unique mammals that once roamed South America. The finds also overturn long-held wisdom about the continent's geologic history

The Mystery of Methane on Mars & Titan
It might mean life, it might mean unusual geologic activity; whichever it is, the presence of methane in the atmospheres of Mars and Titan is one of the most tantalizing puzzles in our solar system

All Wet? Astronomers Claim Discovery of Earth-like Planet
Not too hot and not too cold means just right for water

Human Error Caused Mars Global Surveyor Failure
Data entry mistake ultimately caused the craft to run out of power