Rolling Science and Nature Thread

by **The Dude** » Mon Sep 28, 2015 11:12:54

that usually happens before hte movie is out

by **Woody** » Mon Sep 28, 2015 11:26:46

evidence of flowing salty water

by **The Dude** » Mon Sep 28, 2015 11:31:17

they're calling it "The Isle of Bryce Harper's Tears"

by **Soren** » Mon Sep 28, 2015 11:34:03

Woody wrote:evidence of flowing salty water

"The hydrated salts most consistent with the spectral absorption features we detect are magnesium perchlorate, magnesium chlorate and sodium perchlorate. Our findings strongly support the hypothesis that recurring slope lineae form as a result of contemporary water activity on Mars."

I think that means there are patterns of salts consistent with salt that has been wet.

by **Monkeyboy** » Mon Sep 28, 2015 14:03:02

How is that new? They've known there were periods of seasonal water for a while now, or at least there was very strong evidence for it.

by **MoBettle** » Mon Sep 28, 2015 14:05:07

The Dude wrote:that usually happens before hte movie is out

Coming out Thursday, perfect timing.

(Mostly joking but I'm sure there's at least a little bit there. I doubt they just made this discovery yesterday or something)

by **Soren** » Mon Sep 28, 2015 15:12:20

Monkeyboy wrote:How is that new? They've known there were periods of seasonal water for a while now, or at least there was very strong evidence for it.

Seasonal melting of the ice caps vs a system which results in frequent flowing water basically. Haven't read all the stuff yet.

by **Monkeyboy** » Mon Sep 28, 2015 17:27:33

Yeh, but that's something that's been out for a while, at least in bits and pieces. I thought this was a foregone conclusion. The evidence has been trickling out over the past few years in this direction.

I guess I got excited because I didn't think they would have a big announcement for this. I was hoping for something bigger, such as dinosaurs.

by **Slowhand** » Mon Sep 28, 2015 22:29:24

Well Google changed their logo to Mars drinking a glass of water so...

by **Monkeyboy** » Tue Sep 29, 2015 11:14:17

well yeh, NASA made an announcement, which is a big deal. I just didn't think this was the big deal being announced since I already knew about this for a while.

Still cool though. I'll be shocked if there's not life there. If nothing else, there's plenty of cross contamination between planets. Life could have started here and gotten there very easily. Well, not easily, but there's enough movement between the two planets that I'd be surprised if it didn't happen.

by **Soren** » Tue Sep 29, 2015 11:27:00

Monkeyboy wrote:there's plenty of cross contamination between planets

citation needed

by **Monkeyboy** » Tue Sep 29, 2015 11:29:27

Soren wrote:
Monkeyboy wrote:there's plenty of cross contamination between planets

citation needed

exhibit 1 would be the martian meteorite that was thought to have bacteria back in the 90's.

Big things hit the planets every so often and those collisions shoot stuff out that makes it to other planets. Do I really need to cite that?

by **Monkeyboy** » Tue Sep 29, 2015 11:31:45

Here's one...

http://www.space.com/14268-rare-mars-me ... ssint.html

A hail of Martian meteorites crashed to Earth last July, and collectors and scientists around the world are snapping up the ultra-rare rocks for display and study.

The meteorites fell in the Moroccan desert in July and were recovered a few months later. Scientists confirmed today (Jan. 17) that the rocks are Martian, presumably blasted off the Red Planet by an asteroid strike.

The rocks are a rare treat for researchers, allowing them to investigate relatively pristine chunks of Martian material. Such freshly delivered pieces of the Red Planet have been found on only four other occasions, the last time in 1962.

by **The Dude** » Tue Sep 29, 2015 11:33:52

that seems to dispute how common you think it is

by **Houshphandzadeh** » Tue Sep 29, 2015 11:38:25

more like Reptileboy

by **Monkeyboy** » Tue Sep 29, 2015 12:09:09

So there have been 4 instances since the 1800's and you guys think it's rare? When we're talking about geological time and the seeding of a planet with life, 4 times in the last 250 years is a barrage of martian rocks. That's 4,000 strikes in the last million years. Think like geologists, people.

by **The Dude** » Tue Sep 29, 2015 12:12:00

it says rare in your dang article bro

by **Bucky** » Tue Sep 29, 2015 12:20:34

so in the big picture it's more medium rare

by **td11** » Tue Sep 29, 2015 12:22:07

The Dude wrote:it says rare in your dang article bro

they mean it's rare for humans to actually witness it as it happens, since our lifespans are so short relative to the events occuring. but MB is basically right

by **The Dude** » Tue Sep 29, 2015 12:24:01

the first sentence says the rocks themselves are rare, i understand the second part, though

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