Thoughts on the (possible) death of Kepler

Today brought some incredibly sad news to planet hunters everywhere. The Kepler satellite, which has provided all the data which has fed our site since the beginning, has probably reached the end of its useful life, at least as far as hunting for planets goes.

Kepler team members (& friends of Planet Hunters) Jon Jenkins, Natalie Batalha and Bill Borucki look at Kepler data in an artful press shot. They’re just three of the team who have devoted such care to Kepler.

Facts first. As reported elsewhere, Kepler’s fourth reaction wheel seems to have failed. The reaction wheels are what the spacecraft uses to point accurately, and with this failure Kepler’s down to only two, not the three needed to point precisely at its targets. Without three functioning reaction wheels, Kepler won’t be able to hold its gaze on the part of the sky that hold the stars that we’ve all become so familiar with over the last few years. There are still things to be tried – most of them variants on the tried and trusted ‘turn off and turn back on again’ methods – but the participants in today’s press conference didn’t seem very confident. The likely best case scenario involves Kepler being placed into a stable mode while those of us left on Earth spend the next few months contemplating what else it might be used for (budgets notwithstanding).

So where does this leave Planet Hunters? Bill Borucki – Kepler’s indefatigable principal investigator – was at pains during the press conference to stress that there is plenty of science left in the data that the spacecraft has already sent to Earth. He believes (and who are we to doubt) that Kepler already has enough information on hand to satisfy the critical science goal of determining what the odds of an Earth-sized planet are. There is a year or so of data that hasn’t been seriously reviewed by anyone, and much less than half of the data supplied has ever been viewed by Planet Hunters. In the long run, there are other data sets (the European COROT mission might be worth a look) and future missions (NASA’s TESS will follow where Kepler led, but looking for nearby planets).

Those discussions are for the days to come, though. For now, I want to pay tribute to the people behind the spacecraft. There’s a temptation at times like this to anthropomorize, to feel sorry for our plucky little planet hunter way up in space. Yet the truth is a mission like Kepler is what it is because of the blood, sweat and tears of hundreds of people, many of whom have dedicated literally years of their lives. I don’t know Bill Borucki well, but I first met him when I interviewed him for the BBC’s Sky at Night program. What struck me then, apart from his relaxed humility, was the tale he spun of year after year pitching what was to become Kepler only to be told that his ideas were unrealistic. Most people would have given up, but Bill and his team pressed on and as a result of that dedication were in the right place at the right time when the time came for an exoplanet mission to be picked.

The Kepler team are scattered across the US, and indeed across the world this evening. I hope many of them will be raising a glass to (what seems to be) the end of a job well done. Before we join them, the least we can do is go and look at some of their data they collected – after all, we still don’t know what’s lurking in the Kepler data displayed at Planet Hunters.



19 responses to “Thoughts on the (possible) death of Kepler”

  1. Andre says :

    Cris…don’t fell sad. As you pointed out – Kepler made what it was made for, and beyond…and more important. It opened the doors for new ideas and missions. There was no possible way to escape the end. It was just a matter of time (and space). And at least the value of the mission is still there. Thanks to Kepler satellite for all miliseconds of power and “will” from its creators and operators it materialized.

  2. Wu BingXun says :

    I don’t like this! so sad…

  3. KateMalone (@Katemalone_) says :

    ‘turn off and turn back on again’ methods… now I can’t kick the mental image of a Kepler technician calling in to tech support, being told “Have you tried the reset button…?” by some dude with an indian accent.. 😛

  4. Henryk Krawczyk says :

    This very sad message

  5. Enrique Ferreyra says :

    I feel sad too bro, i hope we can still get a lot of planet hunter research with the remaining data and maybe the community can throw some ideas for keep normal people in a lost place of the world like me feeling part of some very important scientific research. Dont give up.

  6. wolfrayetstar says :

    Reblogged this on Spherical Chickens in a Vacuum and commented:
    This recent update about Kepler really made me sad…

  7. George Kountouris says :

    I’m really sad. I wish to be able planet hunting by the new spacecraft TESS. I don’t know when it will be launched.

    • KateMalone (@Katemalone_) says :

      TESS is scheduled for launch in 2017, but another spacecraft, GAIA, is being launched in 2013. It will deal in radial velocity measurements, so it’s not like Kepler and TESS per se, but it still means more exoplanet discoveries!

  8. djebaili abdelghani says :

    By Kepler you will be always In Our Hearts ♥

  9. robert gagliano says :

    Very disappointing news. All the more reason to forge ahead. I strongly encourage all PH’ers to help with Meg’s TCE analysis.

  10. John Murrell says :

    CoRoT is also dead I beleive – the photometry instrument failed last November and there is no information on their being able to restart it so no more data from that source either. We will just have to rely on the spectroscopic redshift measurements for new data. Of course there should be more discoveries from the archived Keplar data as well.

    • George kountouris says :

      Yes John I searched for CoRoT too because i’m working for our project in order to present it in my association (Hellenic Amateur Astronomy Association) and i believe that is dead too.

  11. Corentin says :

    I feels like a familiar animal has a broken leg and is left alone out of our reach.

    Even if the job is done, It’s sad.

    • pablo2758 says :

      Geez, thats the SADDEST comparison ever! 🙂 as if we werent already sad enough about it, please give us a break 🙂 (but I know what you mean, anyway, its a good thing machines are not programmed to feel pain, yet 😛

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