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August 2, 2015

I was just watching a Youtube video about the ancient rivers on Mars and wondered if anyone has proposed yet the scenario where Mars once held an advanced civilization a million years ago and colonized the earth before becoming a frozen planet itself?

posted by GVSmith at 3:36 PM EDT | Discussion (0)

July 24, 2015

Lakes on Pluto

I posted this in the space xploration thread, but Im not sure if anyone is looking at that. Just curious if anyone has noticed what to me look like lakes with ice flows on Pluto in this image

The usual gutless scientists say the troughs are filled with "some dark material" but to me it looks very much like liquid, maybe some kind of hydrocarbon or possibly liquid ammonia or nitrogen. There also appear to be brighter patches with clearly defined boundaries that look like they may fit together. Geometrically they look very much like an ice flow. Since they are white, they may actually be water ice, or some other ice, maybe CO2.

Either way looks really cool to me, any comments?

The largest lake on the right in the middle is sort of horseshoe or kidney shaped and has the most clear example of white ice flow looking material in it.

posted by r lewis at 3:08 PM EDT | Discussion (7)

July 24, 2015

Heat Transfer Coefficient

Does anybody know the range of heat transfer coefficient (h) for Gale crater region ?

posted by Subha Bose at 2:48 AM EDT | Discussion (0)

July 24, 2015

Heat Transfer Coefficient

Does anybody know the range of heat transfer coefficient (h) for Gale crater region ?

posted by Subha Bose at 2:46 AM EDT | Discussion (0)

July 19, 2015

lakes on pluto

Sorry I don't have the image reference but the high res image of the heart region show what looks very much like lakes in the troughs. Probably liquid nitrogen or some hydrocarbon. Maybe both. The action from the nasa post of the image says some of the troughs are filled with some kind of "dark material". ha typical nasa scientist evasiveness. They are lakes!!!

Anyone else notice that? Fantastic!!!

posted by r lewis at 4:04 PM EDT | Discussion (1)

July 13, 2015

New Horizons_Pluto_active tectonic geology?

http://www.universetoday.com/121317/plutos-time-to-shine-just-hours-away-a-guide-and-timetable/

PIA 19702 seems to show distinct planet wide separation and adjustment spreading of the brighter masses. This pattern follows the equatorial complex repeat patterns as a system of motion and adjusted surface features , giving an impression of plate tectonic type movement. Is the appearance a true planet wide system and does a primarily water ice surface qualify as a tectonic structure? Is the exposed surface actually ice as estimated recently?
Open to discuss any New Horizons aspects, and the Pluto/Charon moon group generally.

posted by Dana Johnson at 3:09 AM EDT | Discussion (11)

June 19, 2015

The SCIM Misssion

www.scientificamerican.com/article/making-space-for-everyone-a-q-a-with-boldlygo-s-jon-morse

Private mission to collect atmospheric dust from Mars and return it to Earth for study.

posted by Barsoomer at 11:25 AM EDT | Discussion (0)

June 9, 2015

Oscillation deflation Tires for Rovers

Oscillation deflation tires would be effective for rover locomotion. Has NASA considered this approach yet? DE

posted by David Elkins at 10:25 PM EDT | Discussion (0)

June 9, 2015

Oscillation deflation Tires for Rovers

Oscillation deflation tires would be effective for rover locomotion. Has NASA considered this approach yet? DE

posted by David Elkins at 10:25 PM EDT | Discussion (0)

June 7, 2015

Mount Sharp - Extended Mission 1a

Please post new comments here.

Link to old posts is here

Winston

posted by LWS at 3:40 PM EDT | Discussion (1)

June 6, 2015

Mark Carey;

Help!!!!

posted by LWS at 6:08 PM EDT | Discussion (1)

June 1, 2015

Martian Soil Weight

Hello,

I was wondering if anyone had any info on the weight of martian soil. On average, Earthen soil is about 78 pounds per cubic foot. Compared to Martian soil, how heavy is Martian soil per cubic foot?

Thanks,

Jason

posted by Jason at 9:19 AM EDT | Discussion (0)

May 28, 2015

posted by allasc at 8:06 AM EDT | Discussion (1)

May 28, 2015

flower

posted by allasc at 8:06 AM EDT | Discussion (0)

May 28, 2015

flower

posted by allasc at 8:04 AM EDT | Discussion (0)


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