d2jsp
Log InRegister
d2jsp Forums > Off-Topic > General Chat > Science, Technology & Nature > Close Encounter With Comet 67p > May Reveal Origins Of Life On Earth
Prev1363738394051Next
Add Reply New Topic New Poll
Views: 26435Replies: 508Track Topic
Member
Posts: 38,458
Joined: Aug 24 2007
Gold: 97.00
#371
May 10 2016 01:37am
Quote (theoneguff @ May 9 2016 11:34pm)
That's not a close encounter, I can't reach out and touch it. This thread sucks.


Be thankful you cannot reach out and touch it

You would be dead

Member
Posts: 28,331
Joined: Jun 9 2007
Gold: 11,700.00
#372
May 27 2016 11:16pm
a new research article from the rosetta team is available at
http://advances.sciencemag.org/content/2/5/e1600285

Prebiotic chemicals—amino acid and phosphorus—in the coma of comet 67P/Churyumov-Gerasimenko

from the announcement of it on the esa site:



Rosetta’s comet contains ingredients for life
Released 27/05/2016 8:00 pm
Copyright
-Spacecraft: ESA/ATG medialab;
-Comet: ESA/Rosetta/NavCam – CC BY-SA IGO 3.0;
-data: Altwegg et al. (2016)

The Rosina-DFMS instrument on Rosetta has detected ingredients considered important for life as we know it on Earth, in the coma of Comet 67P/Churyumov–Gerasimenko.
One important detection was that of the simple amino acid glycine (top, C2H5NO2), a biologically important organic compound commonly found in proteins. Phosphorus was also detected (bottom, P), a key element in all living organisms. It is found in the backbone of DNA and RNA, in cell membranes, and in adenosine triphosphate (ATP), which transports chemical energy within cells for metabolism.

Member
Posts: 20,729
Joined: Sep 19 2006
Gold: 28,520.00
#373
Jun 7 2016 08:25pm
:banana:
Member
Posts: 28,331
Joined: Jun 9 2007
Gold: 11,700.00
#374
Jun 13 2016 08:50pm


Comet on 1 June 2016 – OSIRIS narrow-angle camera
Released 03/06/2016 2:00 pm
Copyright ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

OSIRIS narrow-angle camera image taken on 1 June 2016, when Rosetta was 20 km from the centre of Comet 67P/Churyumov–Gerasimenko. The scale is 0.36 m/pixel at the comet.
Member
Posts: 13,325
Joined: Feb 1 2010
Gold: 0.77
#375
Jun 14 2016 01:19am

Not sure if this has been addressed but almost all of the photos of this thing show the diffuse dust being projected in at least 3 opposing directions,
but comet tails of antiquity only ranged from acute to right angles.
Is there an explanation other than solar wind or sun pressure to explain why I am seeing this?
Not all of these shots can be silhouettes & my flat brain doesn't do pictures well.

This post was edited by MaliceMizer on Jun 14 2016 01:20am
Member
Posts: 28,331
Joined: Jun 9 2007
Gold: 11,700.00
#376
Jun 15 2016 06:50am
Quote (MaliceMizer @ 14 Jun 2016 07:19)
Not sure if this has been addressed but almost all of the photos of this thing show the diffuse dust being projected in at least 3 opposing directions,
but comet tails of antiquity only ranged from acute to right angles.
Is there an explanation other than solar wind or sun pressure to explain why I am seeing this?
Not all of these shots can be silhouettes & my flat brain doesn't do pictures well.


don't forget that the comet and the dust surrounding it seen in three dimensional space and also how close rosetta is to the comet and the position from which the picture is taken - the 'tail' is larger/broader than the comet, so if a picture is taken just in front of the comet (from the sun side) dust is seeing like a halo surrounding the comet, ie projected in all directions
since this comet is not a (near) round object, the rotational position also plays a role
Member
Posts: 13,325
Joined: Feb 1 2010
Gold: 0.77
#377
Jun 16 2016 02:48am
Quote (brmv @ 15 Jun 2016 07:50)
don't forget that the comet and the dust surrounding it seen in three dimensional space and also how close rosetta is to the comet and the position from which the picture is taken - the 'tail' is larger/broader than the comet, so if a picture is taken just in front of the comet (from the sun side) dust is seeing like a halo surrounding the comet, ie projected in all directions
since this comet is not a (near) round object, the rotational position also plays a role



That seems fair enough. Closed the gap far enough for detailed pictures, are there any with the entire tail? Can this be viewed from earth?




One would expect to see the tail at this intersection.
Member
Posts: 28,331
Joined: Jun 9 2007
Gold: 11,700.00
#378
Jun 16 2016 03:29am
Quote (MaliceMizer @ 16 Jun 2016 08:48)
That seems fair enough. Closed the gap far enough for detailed pictures, are there any with the entire tail? Can this be viewed from earth?
...
One would expect to see the tail at this intersection.


just some quick info to show how difficult ground based observations are for this particular comet:
http://blogs.esa.int/rosetta/2015/08/07/amateur-astronomers-keeping-an-eye-on-the-comet/
Member
Posts: 13,325
Joined: Feb 1 2010
Gold: 0.77
#379
Jun 16 2016 04:33am
Quote (brmv @ 16 Jun 2016 04:29)
just some quick info to show how difficult ground based observations are for this particular comet:
http://blogs.esa.int/rosetta/2015/08/07/amateur-astronomers-keeping-an-eye-on-the-comet/





looks about right.
Member
Posts: 28,331
Joined: Jun 9 2007
Gold: 11,700.00
#380
Jun 16 2016 09:00am
Quote (MaliceMizer @ 16 Jun 2016 10:33)
...
looks about right.



also have a look at http://rosetta.jpl.nasa.gov/sites/default/files/rosetta_info/index.html
you can click on the dates given
Go Back To Science, Technology & Nature Topic List
Prev1363738394051Next
Add Reply New Topic New Poll

© 2003-2026 d2jsp  Contact