Kepler, the planet-hunting space telescope, is dead

3,000 potential exoplanets later, a failed reaction wheel means the end of the Kepler mission.

The Kepler telescope, a one tonne satellite launched in 2009 to scan for planets outside of our solar system, is dead.

Over the four years of its mission, the spacecraft has found over 3,000 stars which might have planets orbiting them, and the earth-based analysis has confirmed 134 planets orbiting 76 of them.

In April, the mission even announced the discovery of two potentially habitable planets. The two were roughly earth sized, and roughly earth temperature as well. Each of them might just lie in the "habitable zone", where liquid water can potentially exist.

Sadly, shortly after that discovery, Kepler ran into problems. The telescope manoeuvres through space with four reaction wheels, which keep it pointing in the right direction using a gyroscope effect. In July 2012, one of the wheels failed, but the mission was designed to only require three to accurately aim. In May this year, however, a second wheel failed. Yesterday, Nasa announced that they had given up trying to fix the wheels. Kepler can no longer be targeted accurately.

But, good news! Rumours of Kepler's death have been greatly exaggerated (by me, in paragraph one. Sorry.), because while the telescope can't be aimed any more, it's still useful. The imaging functionality works fine, and with two remaining reaction wheels and a limited amount of thruster fuel left it's even got a bit of manoeuvrability. NASA has opened it up to the community to work out the best way to make use of what's left working; one proposal, for instance, involves heavily post-processing the images to remove drift caused by the lack of a third wheel.

There's hope for the mission yet, which is great, because as Ars Technica's John Timmer writes, there's a lot more to learn:

A longer mission would identify planets further from their host stars. To identify a candidate, Kepler needs to see it pass between Earth and the star the exoplanet orbits three times. The further out a planet is, the longer one orbit takes, so the longer it will need to do three passes. As such, the existing data is heavily biased toward planets that orbit very close to their host stars; this also means that most of the potentially habitable planets we've spotted are orbiting dwarf stars, which are dim enough that water can remain liquid close in.

In other words, we simply haven't looked long enough to detect planets in a habitable zone around energetic stars. We have a much better picture of the diversity of exoplanets, but it's far from a complete one.

Kepler. Photograph: Wikimedia Commons

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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The science and technology committee debacle shows how we're failing women in tech

It would be funny if it wasn’t so depressing.

Five days after Theresa May announced, in her first Prime Minister’s Questions after the summer recess, that she was "particularly keen to address the stereotype about women in engineering", an all-male parliamentary science and technology committee was announced. You would laugh if it wasn’t all so depressing.

It was only later, after a fierce backlash against the selection, that Conservative MP Vicky Ford was also appointed to the committee. I don’t need to say that having only one female voice represents more than an oversight: it’s simply unacceptable. And as if to rub salt into the wound, at the time of writing, Ford has still not been added to the committee list on parliament's website.

To the credit of Norman Lamb, the Liberal Democrat MP who was elected chair of the committee in July, he said that he didn't "see how we can proceed without women". "It sends out a dreadful message at a time when we need to convince far more girls to pursue Stem [Science, Technology, Engineering and Mathematics] subjects," he added. But as many people have pointed out already, it’s the parties who nominate members, and that’s partly why this scenario is worrying. The nominations are a representation of those who represent us.

Government policy has so far completely failed to tap into the huge pool of talented women we have in this country – and there are still not enough women in parliament overall.

Women cannot be considered an afterthought, and in the case of the science and technology committee they have quite clearly been treated as such. While Ford will be a loud and clear voice on the committee, one person alone can’t address the major failings of government policy in improving conditions for women in science and technology.

Study after study has shown why it is essential for the UK economy that women participate in the labour force. And in Stem, where there is undeniably a strong anti-female bias and yet a high demand for people with specialist skills, it is even more pressing.

According to data from the Women’s Engineering Society, 16 per cent of UK Stem undergraduates are female. That statistic illustrates two things. First, that there is clearly a huge problem that begins early in the lives of British women, and that this leads to woefully low female representation on Stem university courses. Secondly, unless our society dramatically changes the way it thinks about women and Stem, and thereby encourages girls to pursue these subjects and careers, we have no hope of addressing the massive shortage in graduates with technical skills.

It’s quite ironic that the Commons science and technology committee recently published a report stating that the digital skills gap was costing the UK economy £63bn a year in lost GDP.

Read more: Why does the science and technology committee have no women – and a climate sceptic?

Female representation in Stem industries wasn’t addressed at all in the government’s Brexit position paper on science, nor was it dealt with in any real depth in the digital strategy paper released in April. In fact, in the 16-page Brexit position paper, the words "women", "female" and "diversity" did not appear once. And now, with the appointment of the nearly all-male committee, it isn't hard to see why.

Many social issues still affect women, not only in Stem industries but in the workplace more broadly. From the difficulties facing mothers returning to work after having children, to the systemic pay inequality that women face across most sectors, it is clear that there is still a vast amount of work to be done by this government.

The committee does not represent the scientific community in the UK, and is fundamentally lacking in the diversity of thought and experience necessary to effectively scrutinise government policy. It leads you to wonder which century we’re living in. Quite simply, this represents a total failure of democracy.

Pip Wilson is a tech entrepreneur, angel investor and CEO of amicable