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Gravity Tractor Could Deflect Asteroids

Hugh Pickens writes "A new study at the Jet Propulsion Labs shows that weak gravitational pull of a "gravity tractor" could deflect an Earth-threatening asteroid if it was deployed when the asteroid was at least one orbit away from potential impact with Earth. First a spacecraft would be crashed directly into the asteroid, similar to the Deep Impact mission that impacted a comet in 2005. This would provide a big change of direction, but in a less controllable fashion that could push the path of the asteroid into a dangerous keyhole. But then a second spacecraft, the gravity tractor, would come into play, hovering about 150 meters away from the asteroid, to exert a gentle gravitational force, changing the asteroid's velocity by only 0.22 microns per second each day.

"Gravity Tractor" Could Deflect Earth-Threatening Asteroids

A "gravity tractor" could deflect an Earth-threatening asteroid if it was deployed when the asteroid was more than one orbit away from the potential impact, according to a new study. If the space rock was found heading straight for Earth, a combination of techniques - including a gravity tractor - might save the day.

Gravity Launches Searchlight: Expand Spotlight To Work Online

Gravity Applications, developer of innovative solutions for the Mac platform, has announced the availability of Searchlight. Searchlight allows users to search their Apple computer from all machines at their office or home, and even from their iPhones. The AJAX powered User Interface, that Searchlight uses, is designed to make the whole process of finding documents on your computer as simple as possible, no matter where currently a user is on the network.

Zero-gravity may make astronauts rash drivers

London, September 23 : A new study by French and US researchers has suggested that zero-gravity can adversely affect astronauts' ability to judge size and distance, which may make them bad drivers.

Video: Astronauts under Zero Gravity

Astronauts under zero gravity in Shenzhou VII spacecraft

Gadget Freak Case #121: Robot Can Read Terrain and Adjust

Here’s every kid’s dream — a real robot vehicle that actually reads its terrain and makes adjustments in its movement accordingly. Jared Whelan, Matt Craft and Dave Richards created the “versatile robot” which has a sensor that scans the ground and makes adjustments with reverses and turns. The operator can also remotely select transportation modes. In one mode, the robot’s tracks are raised for steep climbs. It comes with an accelerometer that evaluates the robot’s position relative to gravity. When the robot detects a steep incline, it will accelerate and reconfigure to a lower center of gravity for maximum traction. Once it regains flat ground, the robot reconfigures to its original position.

Gravity Is Not the Main Obstacle for America?s Space Business

In the spring of 2006 Robert Bigelow needed to take a stand on a trip to Russia to keep a satellite off the floor. ... It was, says the entrepreneur and head of Bigelow Aerospace in Nevada, “indistinguishable from a common coffee table.”

The Gravity Group Launches first ride company blog & podcast

Broadband Service Provider Trident SR Sdn. Bhd.

Zero Gravity Corporation Hosts Exclusive Platinum Experience with Apollo-11 Astronaut Buzz Aldrin in Las Vegas August 17

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Astronauts under zero gravity in Shenzhou VII spacecraft

Updated: 2008-09-26 11:07

Jim Zemlin: The New Center of Linux Gravity

""One of the things that make Linux work as a development project is the fact that Linus [Torvalds], who is the final decision maker on the release of the kernel, works at a place that is not one of the competitors that collaborates on the project," Zemlin commented."

Jim Zemlin: The New Center of Linux Gravity (internetnews.com)

"Things have gone better than I would have expected," Zemlin told InternetNews.com. "We're in the business of growing the Linux platform and making sure the development process of Linux is maintained in a way that is productive and safe." The Linux Foundation also has the task of making sure that key developers of Linux such as Linus Torvalds have a neutral place to work. Torvalds is employed by the Linux Foundation. "One of the things that make Linux work as a development project is the fact that Linus [Torvalds], who is the final decision maker on the release of the kernel, works at a place that is not one of the competitors that collaborates on the project," Zemlin commented.

Jim Zemlin: The New Center of Linux Gravity

Standing at the headwaters of the ecosystem that is Linux is the Linux Foundation and its executive director Jim Zemlin. The Linux Foundation was forged out of the merger of the Open Source Development Labs (OSDL) and the Free Standards Group in 2007 as a new group with a new mandate for Linux.

Jim Zemlin: The New Center of Linux Gravity

Broadband Service Provider Trident SR Sdn. Bhd.

Jim Zemlin: The New Center of Linux Gravity

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Searchlight lets you search Macs from iPhone

Gravity Applications has announced the availability of Searchlight, a new search tool for Mac users that enables you to search your Mac from all computers in your office or home, and also from the iPhone. It costs $99.

Spacecrafts to Unravel Earth's Mysteries or Destroy It

This is the Gravity field and steady-state Ocean Circulation Explorer. Or GOCE for short. Or the most amazingly good looking spaceship orbiting around planet Earth. Or Darth Vader's racing shuttle. Call it whatever you want but when it's launched next month on a Russian Rockot, this vessel will be the first of the five Earth Explorers, which are here to save the planet even while they look like they can destroy it.

Wii Workout For Only $110 Per Hour

american council on exercise, dorothy evans, gravity fitness, le parker meridien, mark natale, robyn angrick, wii, wii boxing

Flyby Anomalies Explained?

Several different spacecraft have exhibited unexplained changes in speed during gravity assists when flying by Earth. First there was Galileo in 1990 and 1992, NEAR, which flew by Earth in January 1998, and then Cassini in August of 1999. Rosetta — the ESA spacecraft that recently flew by an asteroid – swung by the home planet in March 2005, followed by MESSENGER in August of the same year. All these probes showed an expected change in speed during the flyby. The largest anomaly was recorded for NEAR, whose velocity changed 13 millimeters per second more than it should have. Earlier this year, a group of JPL researchers that had been working on the problem for years basically threw up their hands, saying they hoped other physicists could come up with a solution.

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