Lost In Space

 

Oh bother, looks like a mistake during a down link hand off from one ground station to another resulted in the robotic lander Minerva to be dropped at the wrong time. Hayabusa (it’s shadow is visible on the above photo, cool eh?) had been making burns to keep station over the asteroid Itokawa when the lander was commanded to release. The spacecraft was moving away at a speed of 15cm/sec, 2cm/sec faster than the asteroids escape velocity. So, Hayabusa launched Minerva into space. That sucks, I was looking forward to seeing that hop around on the surface. However, all is not lost. The laser range finder system on Hayabusa is working great, the thrusters are working pretty well to keep correct orientation, and plans for the slug to be shot into Itokawa is still on the short list of planned events. 

Robot asteroid-explorer is lost in space

Gravitational tractor for towing asteroids

 

 

Dr Edward Lu and Dr Stanley Love propose that a rocket be launched into space, effectively to act as a giant magnet. The gravity tractor would hover alongside the asteroid, with its thrusters pointing outwards so the exhaust does not affect the surface. The tractor would then pull the asteroid off course, merely using the gravitational pull between the two bodies. The scientists calculate that, with sufficient warning, a 20 tonne gravity tractor could safely deflect an asteroid 200 metres across in about a year of towing.

Gravitational tractor for towing asteroids

Hayabusa Nearing Itokawa

 

Hayabusa Mission

The Japanese mission to land a 10cm high robot names ‘Minerva’ on an asteroid is still on track even if the spacecraft is not in the best of health. Three of its four reaction wheels (devices used to maintain correct orientation) have failed and is now using precious propellant to stay on target.

Itokawa

 

The images that are being sent back are stunning. The survey of asteroid Itokawa is sure to produce a wealth of data on solar objects.

I’m looking forward to seeing if the tiny rover will be able to stay on the surface for any length of time or if it will bounce off and float away. If everything works as planned this will be the fist controlled landing and exploration of an asteroid in the history of mankind.

[ via BBC News

A fantastic article from Wikipedia on the Hayabusa mission 

JAXA Hayabusa Mission Page 

Hayabusa Homepage

The International Space Station – Manned for 5 years

Woohoo! It’s been close a few times but the ISS has managed to stay occupied with no vacancies for the last five years running. Lets hope for five years more and that NASA gets those heavy lifters off the ground so we can start doing more in space.

The International Space Station So Far: Five Years of Service, But Incomplete

NASA’s First Annual Space Elevator Competition ends with no winners

No winners yet. If you think you can build a device that will run up a teather at more than 1 m/s you might be able to win $50,000. Oh yeah, no batteries allowed and don’t even think about using gasoline ’cause it needs to run in space.

[via engadget]
NASA’s First Annual Space Elevator Competition ends with no winners