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Home Forums General Discussion Rosetta – Philae landing on Comet 67P

This topic contains 146 replies, has 5 voices, and was last updated by  Christina Chester 1 year, 2 months ago.

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  • #9421

    Mike Meynell
    Moderator
    Topics: 119
    Replies: 749

    We’ve received the following timeline from the BAA regarding the Rosetta mission to Comet 67P/Churyumov-Gerasimenko and the key moments that we can expect tomorrow (Wednesday):

    06:00 – Rosetta delivery manoeuvre
    07:35 – Final Go/No go
    09:03 – Philae separates from Rosetta
    09:43 – Loss of Rosetta signal during post-delivery manoeuvre
    10:53 – Regain signal from Rosetta
    11:59 – First descent data
    16:02 – Predicted landing time
    17:35 – Expected receipt of first 360 deg panorama

    All times are UTC (GMT), Earth received time. Events at the spacecraft happen 28 minutes earlier.

    You should be able to get live updates on the comet landing at the ESA website here: http://rosetta.esa.int .

    It would be good if we could use this thread to report on the potential landing tomorrow.

    #9428

    Christina Chester
    Participant
    Topics: 17
    Replies: 193

    Thanks for sharing this timeline Mike.

    Just to add to this, there’s a live webcast from mission control available here for anyone interested in watching it all unveil: http://new.livestream.com/esa/cometlanding

     

    It will begin (very soon) at 19:00 GMT 11 November and continue (with pauses) to cover crucial mission milestones overnight on Tuesday and through to Wednesday.

    #9430

    Christina Chester
    Participant
    Topics: 17
    Replies: 193

    Whoop whoop! The first of three go/no go decisions have been made. Rosetta is on the right trajectory to delivery the Philae lander.

    #9436

    Mike Meynell
    Moderator
    Topics: 119
    Replies: 749

    Stuart Clark’s live blog on the Guardian is now up and running: http://www.theguardian.com/science/across-the-universe/live/2014/nov/12/rosetta-comet-landing-live-blog

    So, apparently, the third go/no-go was delayed because the cold gas thruster on top of Philae is not working.

    It was my understanding that they weren’t going to use this anyway, as 67P has a big enough mass for Philae to get to the surface under the small gravitational pull… but Stuart says that the failure of this thruster has made the mission more risky… so maybe they were intending to use it after all.

    The fourth go/no-go is a “go”… the landing attempt is definitely happening today!

    • This reply was modified 2 years, 11 months ago by  Mike Meynell.
    #9439

    Mike Meynell
    Moderator
    Topics: 119
    Replies: 749

    Detailed timeline from ESA is attached to this message.

    Attachments:
    You must be logged in to view attached files.
    #9444

    Christina Chester
    Participant
    Topics: 17
    Replies: 193

    Separation of the Philae lander should have happened just now!

    #9445

    Mike Meynell
    Moderator
    Topics: 119
    Replies: 749

    Big milestone there…. Philae has separated from Rosetta. 7 hours until landing!

    #9446

    Christina Chester
    Participant
    Topics: 17
    Replies: 193

    I was nervous watching that! Smiles from the scientists all ’round. It aint over yet!

    #9447

    Mike Meynell
    Moderator
    Topics: 119
    Replies: 749

    Good to see Mark McCaughrean on the live feed from ESA… he will, of course, be at the Flamsteed in February to talk about the mission: http://flamsteed.info/event/professor-mark-mccaughrean/

    #9448

    Tej
    Participant
    Topics: 36
    Replies: 589

    I am flipping in an out of work to catch up, its so very exciting and I am also so anxious for its success because its so not a surefire thing. Thanks for all these updates guys.

    Go Philae!!

    #9449

    Tej
    Participant
    Topics: 36
    Replies: 589

    Update 10:34 mentions that the comet is “singing” 🙂

    Its a nice sound actually, I like it even though they cranked up the frequency for our hearing range.

    Now yesterday, I saw this article on while searching google for positional info on 67p itself and top of the search was a Daily Mail headline “67p comet sings – scientists baffled”, I couldnt see this news anywhere else so after having a brief read I decided to completely ignore it.

    Now more than 12 hours later, the news is real. How the hell do Daily Mail reporters get their dirty hands on proper scientific news before everyone else…hmpph!

    #9450

    Mike Meynell
    Moderator
    Topics: 119
    Replies: 749

    the comet is “singing”

    How extraordinary… that’s quite a beautiful sound actually.

    ESA broadcast about to start again.

    #9451

    Christina Chester
    Participant
    Topics: 17
    Replies: 193

    How the hell do Daily Mail reporters get their dirty hands on proper scientific news before everyone else…

     

    Think I saw something on this too. Not from a tabloid paper and without mention of anyone being baffled – will try and track it down… In the meantime, here’s a link to the JPL report: http://www.jpl.nasa.gov/news/news.php?feature=4374

    #9452

    Mike Meynell
    Moderator
    Topics: 119
    Replies: 749

    Signal from Rosetta has been re-established… phew! That dragged on much longer than expected. Scary stuff.

    We should start receiving data back from Rosetta and Philae now.

    #9453

    Mike Meynell
    Moderator
    Topics: 119
    Replies: 749

    We should receive the first images from the CIVA (Comet Infrared and Visible Analyser) imaging system, on board Philae, in the next couple of hours.

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