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Comment A new kind of software? (Score 1) 150

it could require a whole new kind of software.

I asked the technical lead Kirk Bresniker (chief architect at Hewlett Packard Labs) about this exact thing at the launch yesterday, and he said no, that you should be able to use conventional software (I specifically asked about Python), with the speed-up occuring under the hood.

I am not entirely convinced that it will be that easy...

Comment Re:Thought that was the whole point. (Score 2) 48

I thought the current theory was that most of the gaps in Saturn's rings are caused by gravitational resonances with other orbiting bodies; these resonances having cleared the resonance orbits in question. I haven't RTFA yet, but is the point that actually finding nothing validates the model, or is there too much nothing, or what?

Yes, the gaps are cleared by resonances with the moons, and this finding does not change that at all. Cassini was going beneath the rings, between the D ring and the upper atmosphere of Saturn, and the general feeling was that there would be a constant stream of ring material ("dust," although really it would be small ice particles) going down from the rings to burn up in Saturn's atmosphere. Now, it seems that isn't so, and I am sure some theorists are working on papers to explain why even as we discuss it here.

Comment Re:Collissions (Score 3, Informative) 48

They were very worried about dust and ice fragments between the rings and Saturn itself before they went inside the rings*, which is why they used the Cassini radio antenna as a shield during the first two ring plane passages. Now that they have found that there is not much dust there, they won't have to do that**, which will free the spacecraft to take better pictures and collect better data.

As for the rest, Cassini entered orbit around Saturn on July 1, 2004. If it hasn't been struck so far, it will probably be OK for the rest of the mission.

* There was talk about doing this with Pioneer 11 in 1979, but in the end it was viewed as too dangerous.
** There will be 4 passes near the D ring for which the antenna will be used as a shield again.

Comment Re:Numbers (Score 2) 575

The one I looked had gave the airline the right to deny boarding. Once you have taken your seat, you have boarded. Being removed (in plain English, if not at law) is not being denied boarding.

IANAL, and this is certainly not legal advice.

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