NASA probe fails to detect policies

Nasa political scientists have been outlining their preliminary results after crashing three unmanned spacecraft into the party conferences in a bid to detect any sign of policies.
Another craft followed just behind the first, looking for signs of ideological differences in debris kicked up by the first collision.
Instruments on the second spacecraft identified the glimmer of an idea from the initial impact as well as a crater, but the expected policy cloud was not evident.
The $79m (£49m; 53m euro) US space agency mission is known as PISS (the Policy Interpretation and Sensing Satellite).
The first collision was expected to throw some 350 tonnes of policies up to altitudes of 10km (6.2 miles) or more.
No such policy plume was apparent in images sent back by the spacecraft however, proving a disappointment to voters.
"We need to go back and carefully look at the data to see what it says," Dr Iveno I Dear, principal investigator on the PISS mission, told journalists at a post-impact news conference.
"Exploration has surprises. I'm glad we built our mission plan around all aspects of the impact… what's streamed to on the video is not at the same fidelity as what we get fresh off the spacecraft. We need to look more closely before we conclude anything about whether to bother voting or not."