July 2013 Blog Posts (7)

Notes from a Defense

I wrote this while my friend and colleague Marcela Ewert presented her work at her Ph.D. defense. She's been doing a lot of really cool work about how Arctic microbes make their living despite the temperature and salinity extremes found in the sea ice and in the snow that rests on it. Here's a link to some of the work included in her dissertation.

Jargon note: exopolysaccharides, also known as…

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Added by Regina Carns on July 27, 2013 at 7:32pm — 3 Comments

Yellowstone field sampling IV

Fourth day of sampling at Yellowstone National Park

"Grizzly Encounter!"


-July 2013-



Thursday yielded another fun set of adventures in Yellowstone! Kirsten and I joined up with Arizona State University students to go sample a remote site, Obsidian Pool, near Mud Volcano (a popular spot for Yellowstone visitors). …

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Added by Sanjoy Som on July 25, 2013 at 10:58am — No Comments

Yellowstone National Park field sampling III

Third day of sampling at Yellowstone National Park 

- July 2013 -

Wednesday brought new experiences with hot springs. Eric took us to Sentinel Meadows, an area of the Lower Geyser Basin with several spectacular springs, including Flat Cone, Steep Cone, Mound Cone, and Queen’s Laundry springs. Steep cone is an approximately 15 feet tall cone formed by sinter deposited over…

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Added by Sanjoy Som on July 18, 2013 at 7:30am — No Comments

Yellowstone National Park field sampling II

Second Day of Sampling at Yellowstone National Park

- July 2013 -

Crater Hills Geyser was just the beginning.. The next day, we met Eric at Madison junction, and decided to go to Rabbit Creek to sample. The springs sit on top of rhyolite, a type of…

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Added by Sanjoy Som on July 16, 2013 at 7:30pm — 2 Comments

Yellowstone National Park field sampling I

Yellowstone Nation Park sampling expedition for Astrobiology

- July 2013 -

Yellowstone National Park is an outstanding place to do Astrobiology research. Created by 3 major eruptions 2 million, 1.3 million, and 600 thousand years ago (we’re overdue for the next one!), and punctuated by smaller eruptions since, Yellowstone is a…

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Added by Sanjoy Som on July 15, 2013 at 10:00am — No Comments

Drake Made A Little List

Here's a little something about the Drake Equation, based on the song "I've Got a Little List" from Gilbert and Sullivan's "The Mikado" (here's a rather good modern take on it by Opera Australia.)

To answer those who ask why there's no aliens around

I've got a little list

I've got a little list

Of factors that when multiplied say whether they're not…

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Added by Regina Carns on July 13, 2013 at 12:57am — No Comments

Sing a Song of Spaceflight

I've been working on lyrics to a Gilbert and Sullivan pastiche about the Drake Equation, but it's going a bit slowly. In the meantime, here is my version of "Wild Rover", which I sang at our local Chantey Sing a while back (the Chantey Sing is a get-together where people take turns leading the group in singing old sailors' work songs and other nautical music.) As I explained to the folks there, these days the exploration of unknown…

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Added by Regina Carns on July 5, 2013 at 1:41am — 3 Comments

Mentorship

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The 'Ask an Astrobiologist' Series

Next Episode: 13 July 2017

Featuring Dr. Alexis Templeton

Alexis Templeton is the Principal Investigator of the Rock-Powered Life team with the NASA Astrobiology Institute (NAI). She is a geomicrobiologist with expertise in microbe/mineral interactions, biomineralization, chemical imaging, spectroscopy, and isotope geochemistry.

Our next episode of Ask an Astrobiologist features an interview with Dr. Templeton and Dr. Sanjoy Som. Watch live on SAGANLive and remember to share your questions to Twitter with #AskAstrobio.

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