We are doing some essential maintenance work and you will not be able to register or update your profile setting until we've finished, which should be at about 9pm this evening.
We apologise for any inconvenience - you will be able to register shortly. In the mean time you will still be able to log in as usual.
There are reasons to be optimistic that we can start to know something about whether life exists elsewhere. But, says Charles Cockell, a more remarkable finding might be that we are exceptional
