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


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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


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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


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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


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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

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Using tried and tested methods of constructing habitats from ethnobotanical and ethnozoological useful species for self sustainability on Mars

Posted by Andrew Planet on June 26, 2020 at 8:00am 0 Comments

To maximize crop yields on Mars it would be advantageous to do away with annuals and biannuals by engineering the latter into perennials as standard. Not only would that entail far less work to grow produce as the act of replanting is made obsolete, but per given cultivated area perennials bring forth more food and materials with less demand from the soil than the equivalent of annuals.

Imagine a superfood annual such as lentils engineered into a lentil tree for which there already…

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Free astrobiology webinars for kids, summer 2020

Posted by Julia Brodsky on June 13, 2020 at 12:28pm 0 Comments

This summer, Art of Inquiry hosts free space exploration and astrobiology webinars for middle-school students and their families all over the world.



Here is a list of what was covered so far, as well as an updated schedule of webinars:

The search for life in the Universe, Dr. Alex Tsapin, JPL (retired)

The history of SETI, SETIQuest editor, Larry…

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Radiolysis-powered life

Posted by Andrew Planet on June 11, 2020 at 9:56pm 7 Comments

This paper greatly extends the possibility of what a Goldilocks zone can be.  Its no longer the Goldilocks zone as a single expanse, its the Goldilocks zones for a particular area

https://royalsocietypublishing.org/doi/pdf/10.1098/rsif.2016.0459

¿Are the Venusian sulphuric acid clouds the by product of long dead anoxogenic photosynthetic organisms?

Posted by Andrew Planet on May 4, 2020 at 2:51pm 2 Comments

I just read the piece at the link below entitled "Study: Life might survive, and thrive, in a hydrogen world."

I'd been thinking on similar lines recently, on different atmospheres with early life, but I was considering anoxogenic bacteria whose byproduct is sulfur instead of molecular oxygen. ¿Had life evolved on Venus could its sulfuric clouds be the signature byproduct of such life with no branches ever evolving to produce the equivalent of Earth's Great…

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Ask your questions here!

Started by Gina Riggio in SAGANet Discussions. Last reply by Subarna Chaki 22 hours ago. 124 Replies

If you are trying to ask a question live during Ask an Astrobiologist, please do so in the main chatroom at the bottom of the screen! You can also ask on twitter…Continue

Have we been looking in the wrong time-frame? Requesting feedback on a recent paper.

Started by Christopher J Reiss in The Cutting-Edge of Astrobiology. Last reply by Greg Bowen Jun 30. 5 Replies

Let me first say Hi to everyone as a new member here!   I hope you are all safe, sound, and not too stir-crazy during this Pandemic.I recently stumbled upon a notion for SETI which seems so simple I…Continue

Interactive Online Astrobiology for 10-12 yr olds

Started by Julia Brodsky in Education and Public Outreach Mar 9. 0 Replies

If your 10-12 yr old child is interested in space science, I would like to invite them to our courses. I am a former science teacher,  mom of three, and a former NASA astronaut instructor. I also…Continue

Tags: school, education, middle, astrobiology, STEM

zahra cell

Started by adam nurjaman in Education and Public Outreach Mar 7. 0 Replies

Hallo apa kabar ? semoga selalu baik2 saja zahra cell adalah blog yang…Continue

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