Sunday, December 18, 2011

A Day in the Sun: Will It Make a Difference for Russia’s Phobos-Grunt?

A Day in the Sun: Will It Make a Difference for Russia’s Phobos-Grunt?:



An artists concept of the Phobos-Grunt Mission. Credit: Roscosmos



Editor’s note: Dr. David Warmflash, principal science lead for the US team from the LIFE experiment on board the Phobos-Grunt spacecraft, provides an update on the mission for Universe Today.


It has been trapped in low Earth orbit for more than a month. So low is the orbit that it moves too fast to be contacted – unless controllers on the ground just happen to beam a signal at some unlikely angle. So short does its battery power last that it must be in sunlight while also in position to receive signals. Then, it must still have power to send telemetry back to the ground.


Even with these obstacles, Russia’s Phobos- Grunt probe did manage to communicate with the European Space Agency’s (ESA) antenna in Perth, Australia twice a couple of weeks ago, indicating that some of its systems were functioning. But subsequent attempts at communication have failed, despite the addition of ESA’s Canary Islands antenna at Maspalomas to the worldwide effort to reestablish control over the spacecraft.

(...)
Read the rest of A Day in the Sun: Will It Make a Difference for Russia’s Phobos-Grunt? (381 words)




© David Warmflash for Universe Today, 2011. |
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