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Home → Science → News

Rosetta comet landing – watch it as it happens! [live blog]

Mihai Andrei by Mihai Andrei
November 12, 2014
in News, Space

In case you're not aware, the European Space Agency is just now trying to send Rosetta's lander, Philae, towards the comet 67P/Churyumov–Gerasimenko. The probe is already orbiting the comet and has revealed the most accurate topography of a comet. Watch the live stream here:

Further updates: The separation went great, and the lander is on its way to the comet.

09:06 GMT. Philae is now on its way to the Rosetta comet, everybody is glad that it worked flawlessly. There are still many more crucial moments (the most important one a few hours from now), but so far, everything is just fine.

09:04 GMT. Success! The separation appears to have been successful.

09:00 GMT. We are just moments away from finding out if the separation was successful!

08:59 GMT.Rosetta's trajectory:

After it has deployed Philae, it will manoeuvre away to keep Philae and the landing site in view. Illustration: Esa

08:44 GMT. The separation has already taken place... hopefully. However, there's no way for us to know until the signal reaches Earth. At t he moment, several astronomers are discussing the project on the stream.

08:39 GMT. In case you would like to send comments or questions to the people working at the ESA, use: #cometlanding.

The Rosetta is currently working on its ‘pre-separation manoeuvre’. This is a thruster burn to place it on course for the separation point, when it will release Philae. There are, however, significant problems. The cold gas thruster seems to not work properly, and without the thruster, the risk of Philae bouncing off the surface of the comet has increased. However, all other devices are working properly, so the team decided to go ahead and rely on three screws and two harpoons to drill the legs to the surface of the comet.

08:34 GMT. Overnight, there have been two more go/nogo decisions. Both were ‘go’ but the Philae lander team needed an additional hour before they confirmed that they were indeed ‘good to go’. Right now, we are at a point of no going back, and as I am writing this, we will see the separation about 30 minutes from now. Well, actually, it is happening NOW, but because the distance between Earth and the comet is so large, it will take the signal almost 30 minutes to reach Earth.

08:20 GMT. It's a very risky mission, landing something on a comet. It's the first time something like this has been attempted.

 

Artistic depiction of Philae landing on the comet. Image credits: ESA.

Professor Ian Wright at The Open University is the Principal Investigator for the Ptolemy instrument on board the Rosetta mission. He is in Darmstadt at the moment. You can watch a video of Wright answering questions about the Rosetta mission here:

 

 

YouTube video

Tags: cometPhilaeRosetta

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