Close Encounter With Comet 67p - Topic

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Mar 28 2015 09:36pm

The full-comet image from 21 March ... was taken from a distance of 82.6 km, the image scale is 7 m/pixel, and the 1024 x 1024 pixel image measures 7.2 km across.
The close-ups highlight the range of contrasting surface features seen on the comet, in particular in the Anubis and Atum regions on the comet’s large lobe. The graphic above locates the approximate regions of each inset on the comet – note that due to the change in distance and orientation, the insets are not exactly oriented with how they appear on the main image and the illumination conditions are also different. The close-ups have been processed to bring out the details of the surface and the local nebulosity.

brmv

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#222

Apr 1 2015 04:30pm

Comet on 22 March 2015 – NavCam
This single frame Rosetta navigation camera image was taken from a distance of 77.8 km from the centre of Comet 67P/Churyumov-Gerasimenko on 22 March 2015. The image has a resolution of 6.6 m/pixel and measures 6 x 6 km. The image is cropped, and processed to bring out the details of the comet's activity.

brmv

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#223

Apr 10 2015 12:17am

After the 28 March flyby, Rosetta encountered some navigation issues that that resulted in it moving about 400 km from 67P/C-G. To bring the spacecraft closer to the comet again, a manoeuvre was successfully performed on Wednesday 1 April.
Thursday 2 April, at a distance of about 385 from the comet's centre.

kalelvszod

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#224

Apr 10 2015 09:03am

Awesome man

brmv

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#225

Apr 14 2015 09:23am

Comet activity 31 January – 25 March 2015

This spectacular montage of 18 images shows off the comet’s activity from many different angles as seen between 31 January (top left) and 25 March (bottom right), when the spacecraft was at distances of about 30 to 100 km from the comet. At the same time, Comet 67P/Churyumov-Gerasimenko was at distances between 363 million and 300 million km from the Sun.

coolmoney18

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#226

Apr 14 2015 07:16pm

Quote (brmv @ Jul 19 2014 06:39pm)

http://planetary.s3.amazonaws.com/assets/images/9-small-bodies/2014/20140718_Rotating_view_of_comet_on_14_July_2014.gif

for more information read: http://www.theguardian.com/science/2014/jul/20/comet-67p-rosetta-probe-close-encounter-origins-of-life-churyumov-gerasimenko
will be interesting what they find out during this mission

we need some rockets with nukes attached....

brmv

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#227

Apr 15 2015 02:41am

The non-magnetic comet

Magnetic field data collected by Philae’s ROMAP instrument immediately before (top) and after (bottom) the cliff collision at 16:20 GMT on 12 November 2014 (onboard spacecraft time), between the first and second touchdowns. Height above the surface is plotted on the x-axis and magnetic field strength on the y-axis. Therefore time runs left-to-right for the ascent (lower) plot, but right-to-left for the descent (upper) plot.
The measurements (crosses) are compared with a hypothetical model (solid line) assuming a slightly magnetised surface. Also included is the strength of and variation in the external field, namely the influence of the solar wind interplanetary magnetic field near the comet nucleus.
At distances of 10 m or greater from the surface, the surface component would be very weak, leaving just the external field, as measured. But closer to the surface, the comet’s own field should increase and dominate. That is not seen, therefore the data suggest that at scales of greater than one metre (the resolution of the instrument), the comet is not magnetised.
Rosetta and Philae find comet not magnetised

brmv

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#228

Apr 16 2015 06:13am

Comet on 12 April 2015 – NavCam

This single frame Rosetta navigation camera image of Comet 67P/Churyumov-Gerasimenko was taken on 12 April 2015 from a distance of 146.8 km from the comet centre. The image has a resolution of 13 m/pixel and measures 10.3 km across.

AsTiG

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#229

Apr 18 2015 12:22am

Quote (brmv @ Apr 16 2015 04:13am)

Comet on 12 April 2015 – NavCam

http://www.esa.int/var/esa/storage/images/esa_multimedia/images/2015/04/comet_on_12_april_2015_navcam/15360657-1-eng-GB/Comet_on_12_April_2015_NavCam_node_full_image_2.jpg

This single frame Rosetta navigation camera image of Comet 67P/Churyumov-Gerasimenko was taken on 12 April 2015 from a distance of 146.8 km from the comet centre. The image has a resolution of 13 m/pixel and measures 10.3 km across.

That's Gangsta'

brmv

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#230

Apr 20 2015 08:25am

COSIMA: Meet the family
Rosetta’s dust analysing instrument COSIMA (COmetary Secondary Ion Mass Analyser) has been very busy collecting dust – 12,000 grains and counting!
The COSIMA team shared this image of some of their named dust grains at the European Geosciences Union General Assembly in Vienna this week.

Meet more COSIMA dust grains! The target plate measures 1cm across, and shows dust grains collected between 11 August and 12 December 2014. Credits: ESA/Rosetta/MPS for COSIMA Team MPS/CSNSM/UNIBW/TUORLA/IWF/IAS/ESA/BUW/MPE/LPC2E/LCM/FMI/UTU/LISA/UOFC/vH&S

The 12,000 grains were collected between 11 August 2014 and 28 March 2015, on nine target plates measuring one square centimetre each. The image presented here represents one of these targets, and shows grains collected up to 12 December 2014.
COSIMA studies dust in situ by capturing grains on small target plates like this one, first imaging these with an optical microscope and then analysing the composition of selected grains using a secondary ion mass spectrometer. COSIMA has 74 target plates in total and the instrument is designed to investigate dust grains larger than about 10 microns.
Many of the particle names are given for COSIMA team members, along with other Rosetta mission team colleagues. COSIMA team member Sihane Merouane is responsible for cataloguing the grains and comments: “when we arrived at 2,000 particles, we realised that we would run out of names pretty quickly and that it was becoming a very time-consuming task. So we decided to name only the "big" particles, typically bigger than about 40 microns, with some exception if a smaller one turns out to be exciting, for example in terms of its composition.”

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