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Showing posts with label comet. Show all posts
Showing posts with label comet. Show all posts

Wednesday, 10 December 2014

Earth's water may NOT have come from comets

See http://www.bbc.co.uk/news/science-environment-30414519 .

Rosetta's probes have indicated that water did not come to Earth from comets. Results were posted in the journal Science. This contradicts some earlier analysis of water on other comets.

Wednesday, 12 November 2014

Landing on a comet

See http://www.bbc.co.uk/news/science-environment-30026398 .

The Rosetta project culminating in the landing of a probe on a small comet, is still in doubt as I write as the harpoons designed to secure it to the surface appear not to have fired. The landing probe may actually have landed twice, possibly bouncing off the surface before settling a second time but only just resting on the very low gravity surface. It may be several days before things become clearer.

UPDATE 18.11.14:  We have found out that an old friend was Project Manager on Rosetta at Astrium.  Although now retired, he was invited back in to follow the landing. and was on TV.