There's a 1-in-300 chance that a recently discovered asteroid, believed to be about 1,300 feet (396 meters) long, could hit Earth in 2029, a NASA Latest News about NASA scientist said Thursday, but he added that the perceived risk probably will be eliminated once astronomers get more detail about its orbit.
In January, the space agency will launch Deep Impact, a rocket that will fire a projectile into Comet Tempel 1. If all goes well, a collision will take place on July 4 that will raise a dust cloud that astronomers will use to study the chemical composition of the comet, said officials at NASA officials and researchers at the American Geophysical Union, a conference taking place in San Francisco this week.
Given the wealth of evidence that smoking damages your health, you would have to be stupid not to kick the habit. Now a study suggests this could be a self-fulfilling prophecy, because smoking reduces your IQ.
A trick that persuades human eggs to divide as if they have been fertilised could provide a source of embryonic stem cells that sidesteps ethical objections to existing techniques. It could also be deployed to improve the success rate of IVF.
Next time you go for a stroll on Mars, be sure you don't leave any litter behind. A plan to keep parts of the red planet in their pristine state could see seven areas turned into 'planetary parks', regulated just like national parks here on Earth.
The scheme has been proposed by Charles Cockell, a microbiologist for the British Antarctic Survey in Cambridge, and Gerda Horneck, an astrobiologist from the German Aerospace Centre in Cologne, Germany.