Ok folks, for the record:
Stardust Next Images
here.
Mission press conference
here.
Notes from the press conference (by time on video) follow:
3:00 mins How do they get the trajectory correct ? "Its all done with
MATH".
14:00 The impactor site has been spotted 150 m across with a mound in the centre. Ejecta fly up, and then came back down and settled (gravity). Conclusion is that the impact site was a weak, fragile, self-healing area.
16:55 About one dozen 1mm size impacts hit the spacecraft. About 5,000 smaller impacts. The impacts are bursty in nature, sounding like 'clods' , likened to flying through 'flak'. (Spacecraft approach velocity is 10.9km/sec - or about 24K mph)
18:51 Audio tape of the impacts.
19:50 Chemical analysis of spacecraft impact material: Carbon and Carbon-Nitrogen (CN).
21:30 Comet composition H2O ice (in part)
24:44 Observed smooth flows from subsurface volatile gas eruptions. Material flows downhill due to comet's own gravity.
26:08 Impactor site perimeter definition - size as expected, consistent with ejecta flying up and then resettling on the impact site.
27:07 Finally, they show the comparison of 2005 vs 2011. Oblique impact trajectory of 30% leaving crater of about 150 m across.
29:00 "Ejecta was all ice" - Schultz.
That's about the best I can get from it all.
The 'before' and 'after' impactor images will become available on the web shortly (not available at the time of writing this).
Cheers
