IPB
X   Site Message
(Message will auto close in 2 seconds)

Welcome Guest ( Log In | Register )

10 Pages V   1 2 3 > » 

gpurcell
Posted on: Dec 30 2015, 06:40 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


So what happens to the readied Atlas V that they were going to launch with in this sort of case?

I also don't understand how the contractor that was supposed to deliver the SEIS instrument isn't on the hook for any costs of redesigning that instrument plus damages.
  Forum: Past and Future · Post Preview: #228842 · Replies: 147 · Views: 284637

gpurcell
Posted on: Sep 28 2015, 09:31 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


Seems to me a reasonably priced approach could be a stationary mission on a flat area below one of these sites. Have a fixed super wide angle camera and the biggest telephoto lens possible on a fast rotation mount. Have the onboard computer continually monitor the fixed camera and slew the telephoto lens to any location that shows signs of movement. Also have some really precise environmental sensors to see what is correlated with the discharges.
  Forum: Mars · Post Preview: #226852 · Replies: 74 · Views: 232608

gpurcell
Posted on: Sep 25 2015, 04:15 AM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


QUOTE (JRehling @ Sep 24 2015, 11:12 PM) *
One more scientist is cross-listed: Lujendra Ojha at Georgia Tech. He co-authored a 2011 paper about this:

http://www.nasa.gov/mission_pages/MRO/mult...a/pia14472.html

So this announcement is probably about surface flows indicating possible subsurface brines (similar to the gully issue), not about finding lost spacecraft.


You beat me by two minutes!

http://www.lujendraojha.net/band-horizon/



Dynamic Process on Contemporary mars

One of my interest is understanding the formation mechanism of Recurring Slope Lineae (RSL). RSL are active features on Mars that might require flowing water. On Mars, they form and grow during warm seasons and disappear during cold seasons. They recur over multiple years in generally the same location. I use remote sensing instruments on board various Mars orbiting space crafts to understand their geological/hydrological nature. Additionally, I use data from CRISM onboard MRO to understand its formation mechanism.
  Forum: MRO 2005 · Post Preview: #226713 · Replies: 4 · Views: 29875

gpurcell
Posted on: Jul 17 2015, 05:35 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


I never dreamed Pluto/Charon would be this interesting; these findings should really put impetus behind understanding the KBOs generally.
  Forum: New Horizons · Post Preview: #223953 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 17 2015, 05:29 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


Evidence of Aeolian processes--wind streaks!
  Forum: New Horizons · Post Preview: #223949 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 17 2015, 05:20 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


500T of N2 per hour escaping.

That's insane for a body this small. How can it possibly have an atmosphere?
  Forum: New Horizons · Post Preview: #223944 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 17 2015, 05:16 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


Oooh, that looks like a good terrestrial analogy!
  Forum: New Horizons · Post Preview: #223938 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 17 2015, 05:15 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


Maybe that, but the curvy nature sure seems like fluid flows to me.
  Forum: New Horizons · Post Preview: #223935 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 17 2015, 05:13 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


High res of the Heart. Looks to me like drainage networks.
  Forum: New Horizons · Post Preview: #223933 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 17 2015, 05:11 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


Heart is CO ice. Only CO source on globe.
  Forum: New Horizons · Post Preview: #223931 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 17 2015, 05:08 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


Yep!
  Forum: New Horizons · Post Preview: #223928 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 15 2015, 07:35 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


One initial thought: cratering in the Kuiper Belt represents a very different process than the rest of the Solar System.
  Forum: New Horizons · Post Preview: #223580 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 15 2015, 07:26 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


No audio problems on the uStream stream.
  Forum: New Horizons · Post Preview: #223573 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 15 2015, 07:23 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


Has to be tectonics of some kind.
  Forum: New Horizons · Post Preview: #223568 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 15 2015, 07:22 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


Huge ice mountains.
  Forum: New Horizons · Post Preview: #223566 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 15 2015, 07:20 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


No craters on high res picture.
  Forum: New Horizons · Post Preview: #223563 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 15 2015, 06:58 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


2 minutes
  Forum: New Horizons · Post Preview: #223554 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 15 2015, 12:56 AM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


No safe, good data!
  Forum: New Horizons · Post Preview: #223420 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 14 2015, 01:04 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


The most interesting of the craters to me in the magnified picture is the small one on the lower right. It looks like it hit right at the transition and blew the dark material across the transition boundary between the dark and light material.
  Forum: New Horizons · Post Preview: #223265 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 14 2015, 02:00 AM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


I think the high res imaging path is just about perfect, actually. I really like that we'll get the interface between the heart and the darkest material.
  Forum: New Horizons · Post Preview: #223163 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 13 2015, 09:45 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


Given that big and uneroded crater on Charon, I suspect it will end up being a heavily cratered body with limited to no resurfacing that looks rather similar to Oberon.
  Forum: New Horizons · Post Preview: #223129 · Replies: 1286 · Views: 20606803

gpurcell
Posted on: Jul 13 2015, 01:31 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


Looks like the high res imagery should be just about perfect for understanding the major areas on Pluto. Nice to see the dice some up so nicely!
  Forum: New Horizons · Post Preview: #223022 · Replies: 729 · Views: 570008

gpurcell
Posted on: Jul 12 2015, 02:37 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


I think JRehling has the right idea--archaic liquid flows from the time of Pluto's formation that are preserved due to the lack of bombardment in the outer solar system. The twist I would add is that perhaps during its formation Pluto was able to hold just enough of an atmosphere to enable a short period of weather cycles--so my Hail Mary projection is for some modest erosion features preserved from this period.
  Forum: New Horizons · Post Preview: #222913 · Replies: 729 · Views: 570008

gpurcell
Posted on: May 9 2015, 02:11 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


Looks like a lander of some sort is still a possibility:
http://blog.chron.com/sciguy/2015/05/a-eur...-to-support-it/
  Forum: Jupiter · Post Preview: #220163 · Replies: 107 · Views: 178701

gpurcell
Posted on: Apr 4 2015, 01:51 PM


Member
***

Group: Members
Posts: 242
Joined: 21-December 04
Member No.: 127


First week of the course and it is excellent; just got done watching a couple of lectures where Dr. Brown goes through how reflected light spectra work and how the formulas used to measure spectra can determine atmospheric composition, measure the proportion of water, and determine surface temperatures. What's really cool about it is how he works through the increasing complexity of functional form of the modelling process: e.g., how the fairly simple formula to determine surface temperature has to be modified for the angle of incidence of the Sun by a cosine term.
  Forum: Pluto / KBO · Post Preview: #219307 · Replies: 33 · Views: 112227

10 Pages V   1 2 3 > » 

New Posts  New Replies
No New Posts  No New Replies
Hot topic  Hot Topic (New)
No new  Hot Topic (No New)
Poll  Poll (New)
No new votes  Poll (No New)
Closed  Locked Topic
Moved  Moved Topic
 

RSS Lo-Fi Version Time is now: 17th December 2024 - 03:08 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member.