Missie Rosetta: een reis naar de oorsprong van het leven #8

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Op donderdag 13 november 2014 12:00 schreef ExperimentalFrentalMental het volgende:

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i rest my case
verder raad ik je aan de Mars Missies topic door te nemen
nu is het genoeg geweest, pfff terug naar Rosetta.

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Op donderdag 13 november 2014 12:02 schreef ExperimentalFrentalMental het volgende:

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ok dat is mooi
zie mijn originele statement

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We zijn het eens, vrede en blijdschap, on to the comet now

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Op donderdag 13 november 2014 12:05 schreef ExperimentalFrentalMental het volgende:
Kom kom nou jongens, nu is het genoeg geweest Maanvis, reageer normaal of reageer niet, maar niet van die belachelijke opmerkingen zeg.
deze discussie over MArs is niet voor hier, hier Rosetta please

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Op donderdag 13 november 2014 12:03 schreef xzaz het volgende:

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Nee jij denkt dat die dingen gebouwd zijn voor 90 dagen en geheel toevallig nu 10 jaar meegaan. Correct?

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Op donderdag 13 november 2014 12:09 schreef ROADRUNN3R het volgende:

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Ik ben er ook voor om inhoudelijk te reageren op nieuws over Philae en Rosetta. Ik schakelde gisteravond pas laat in bij dit topic en vond het zeer frustrerend om allemaal die poepreacties te moeten doorspitten om het nieuws ertussen uit te filteren. Laten we vooral nieuws posten rondom deze unieke gebeurtenis.

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Op donderdag 13 november 2014 12:13 schreef ExperimentalFrentalMental het volgende:
Nog 2 uur tot Persconferentie.

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Op donderdag 13 november 2014 12:40 schreef X11 het volgende:
Ik had eigenlijk allang een filmpje verwacht van een blij huppelende Philae over het komeetoppervlak, af en toe een salto makend.

R. Kelly - I Believe I Can Fly

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Rosetta is operating nominally; the network systems and overall ground segment to control the mission are nominal
Last night, Rosetta lost contact with Philae as expected when it orbited below the horizon just after 20:00 CET.
Contact was re-established this morning at 06:01 UTC / 07:01 CET, and the Philae-Rosetta radio link was initially unstable.
As Rosetta rose higher above the Philae landing site, the link became very stable and the lander could transmit telemetry (status and housekeeping information) and science data from the surface.
This morning's surface link was again lost due to Rosetta's orbit at about 09:58 UTC / 10:58 CET. Ignacio explains that with the current orbit, Rosetta will have, typically, two Philae communication windows per day.
The next window opens at 19:27 UTC on the spacecraft and runs through to 23:47 UTC spacecraft time.

twitter:

elakdawalla twitterde op donderdag 13-11-2014 om 13:08:42 And now for some worse @Philae2014 news: according to a CNES briefing this morning, it gets only 1.5 hrs of sunlight in a 12 hr day. reageer retweet

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Op donderdag 13 november 2014 13:09 schreef nikao het volgende:
Slecht nieuws:

twitter:

elakdawalla twitterde op donderdag 13-11-2014 om 13:08:42 And now for some worse @Philae2014 news: according to a CNES briefing this morning, it gets only 1.5 hrs of sunlight in a 12 hr day. reageer retweet

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"Philae is on the surface and doing a marvellous job, working very well and we can say we have a very happy lander," says Paolo Ferri, ESA's Head of Mission Operations at ESOC today.

During the second lander-orbiter communication slot, which ran from 06:01 UTC / 07:01 CET until 09:58 UTC / 10:58 CET this morning, "We had a perfect pass; the radio link was extremely stable and we could download everything according to the nominal plan," adds Rosetta Flight Director Andrea Accomazzo.

Here are details:

First analysis of the touchdown data suggests that the lander bounced twice before settling on the surface of Comet 67P/C-G. The lander remains unanchored to the surface, but the instruments are running and are delivering images and data.

After touchdown at 15:34 UTC (confirmed at 17:02 CET), a clear strong signal was received, with some breaks. Lander telemetry stabilised at about 17:32 UTC and communication with the surface was maintained until the link to the orbiter was lost at 17:59 UTC due to Rosetta's orbit; this was about an hour earlier than predicted for the target landing site (most likely due to local horizon interference).

Later on 12 November, after analysing lander telemetry, the Lander Control Centre (in Cologne) and Philae Science, Operations and Navigation Centre (SONC, Toulouse) reported;

There were three touchdowns at 15:34, 17:25 and 17:32 UTC; in other words, the lander bounced
The firing of the harpoons did not occur
The primary battery is working properly
The mass memory is working fine (all data acquired until lander loss of signal at 17:59 UTC were transmitted to the orbiter)
Systems on board the lander recorded a rotation of the lander after the first touchdown. This is confirmed by ROMAP instrument data, which recorded a rotation around the Z-axis (vertical).

The lander did receive some power from the solar panels on Wall No. 2, but it appears that parts of the lander were in shadow during the time that last night's surface telemetry were being transmitted.

Teams are still working to confirm the location and the overall power and thermal situation on board. Nonetheless, the lander appears to be performing well.

twitter:

GKargl twitterde op donderdag 13-11-2014 om 11:03:02 @msbentley @rebeccamorelle Firing the harpoons is considered but will possibly happen at a later stage. reageer retweet

twitter:

WilksJeremy twitterde op donderdag 13-11-2014 om 09:31:11 Ulamec says #Philae may have jumped up to 1km high on first 'bounce' off the comet #CometLanding reageer retweet

twitter:

chrislintott twitterde op woensdag 12-11-2014 om 19:49:56 Ptolemy on board @Philae2014 has data from a mass spec safely down on the ground; exciting to have chemistry from a comet! #cometlanding reageer retweet

twitter:

ziggypao twitterde op donderdag 13-11-2014 om 10:41:54 CIVA panoramic images showing that #Philae2014 is upright to be shown at @esa press event at 13:00 UT! #CometLanding reageer retweet

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Op donderdag 13 november 2014 13:16 schreef gebrokenglas het volgende:
Dat verklaart ook waarom de verbinding af en toe wegviel in het begin: hij was nog aan het zweven na de eerste touchdown.

Echt een prestatie dit. Hier vallen de Amerikanen met hun rovertjes op Mars wel even stil van.