Posts

May 10, 2013

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7:11 PM | Meteorites From the Tunguska Event—Fodder for 15 Minutes of Fame?

Mere mention of the Tunguska Event may trigger a distant memory from Carl Sagan’s Cosmos series that aired on PBS in the 1980s. Through the intrepid story-telling of Carl Sagan, the general public came to understand that our Solar System was their dynamic “backyard” to be explored, treasured, and be wary of, as well. […]

May 03, 2013

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3:23 PM | New Directions–

New directions and perspective. Within the next 7 days, I will re-focus my attention upon the public’s perception of astrobiology and astronomy. I have, for the most part, been interested in public outreach for the last several years. And, I am attempting to take my cue from the call from certain science communicators to make [...]

May 02, 2013

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10:01 PM | Dwarf Planet: Makemake—Shedding Light on a Distant Solar System Object

Fig. 1 Dwarf Planet Makemake—a Kuiper Belt Object (Source—NASA) Source URL: http://solarsystem.nasa.gov/multimedia/display.cfm?Category=Planets&IM_ID=10804 Original Credit: Princeton University The dwarf planet Makemake was discovered in 2005 by astronomers, M.E. Brown, C.A. Trujillo, and D.L. Rabinowitz utilizing the Palomar Observatory. It takes approximately 310 earth years for Makemake to orbit the Sun, and Makemake is [...]

April 27, 2013

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5:08 PM | Chlorophyll: Comments on the Molecules of Life—Part III

The first organisms on Earth may have closely mimicked the geochemistry of our planet. The reasons as to why may be worded in the following manner, the first organisms needed to be (1) simple, and (2) adapt to the immediate, geochemical energetics. Examining seawater and other saline-type environments allows one to ponder upon the early geochemistry. How [...]

April 24, 2013

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6:50 PM | Further Comments on Chirality . . . under a Cat’s Paw?

Figure 1. Source URL: http://www.astrobio.net/index.php?option=com_galleryimg&task=imageofday&imageId=336&msg=&id=&pageNo=122 From the SOURCE: <"Nebulae are perhaps as famous for being identified with familiar shapes as perhaps cats are for getting into trouble. Still, no known cat could have created the vast Cat's Paw Nebula visible in Scorpius. At 5,500 light years distant, Cat's Paw is an emission nebula [...]

April 19, 2013

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6:19 PM | Supernova of 2.2 million years ago left it’s traces upon the Earth (with link provided)

I thought that the following news was an interesting item concerning Earth’s magnetotactic bacteria: http://www.astrobio.net/pressrelease/5453/supernova-left-its-mark-in-ancient-bacteria The significance of the radioactive marker can be utilized in “dating” and pinning-down other events in the Earth’s early bio-history!

April 18, 2013

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5:14 PM | An Intriguing Subtlety of Porphyrin Bio-Chemistry—Part II

The intriguing chemistry of porphyrins comes, in part, from the seemingly ease of synthesis with simple starting materials. Many University-level chemistry majors perform the lab work in their elementary sophomore/junior classes. The lab work is an adaptation of Paul Rothemund’s synthesis from 1935. A simplified (?) reaction scheme is illustrated in Fig. 1: (The beauty [...]

April 16, 2013

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10:21 PM | Interesting Molecules of Life: Porphyrins—Part I

What is a Porphyrin? The term porphyrin denotes a class of molecules utilized in respiration and sensory processes (i.e. heme, chlorophyll, and similar molecules associated with bacteria). The purpose of the upcoming posts will be to familiarize one with patterns that seemingly meander from primitive life through the complexities associated in the oxygenation of blood [...]

April 15, 2013

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8:04 PM | Martian Surface—

Martian soil is an intriguing subject for various reasons—perhaps a primary reason is whether life resides beneath the Martian soil. Prior missions are indicative of the possibility of life and have teased the public into practically “wanting” to see life, itself. The most recent rover, Curiosity, has found “strong” evidence for past, flowing water (it [...]

April 14, 2013

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6:31 PM | Alternative to RNA-first theory for life on Earth– some comments and a link from NASA.gov site

Proteins first vs RNA first ?–perhaps the energetics would prove unfavorable for RNA-first? Stay tuned. . . For a number of years, the paradigm of life’s origins was that RNA came first. Part of the reason for this paradigm was its propensity for self-reactivity. Current findings seem to up-end the paradigm with a major finding by [...]

April 10, 2013

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3:59 PM | Confounding of Contemplation?

Try to not gaze into the stillness of night and try to not question what our origins tell us; it will confound our better judgment. In an anthropocentric Universe we attempt to imagine what we don’t know how to—oneness with the noblest human purpose. Self-transcendence beyond the senses, from our minds to our hearts we [...]

April 05, 2013

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3:00 PM | Comet Impact in the Pleistocene Era Led to an Abrupt Climate Change?

Imagine when the Earth awakened from the last Ice Age—but fell back into an icy slumber for another thousand years. That abrupt, climate scenario is known as the Younger Dryas event, and it is currently investigated by teams of researchers. One must note the scenario took place during humanity’s hunter-gathering adolescence. (There is a mainstream [...]

March 24, 2013

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2:41 AM | Fear, Rumors, & Sequestration | CosmoQuest Blog

Fear, Rumors, & Sequestration | CosmoQuest Blog. After seeing this blog post at COSMOQuest.org –I was greatly saddened by the way in which politics as usual has been conducted inside the beltway. I can only hope enough individuals see this post and contact their Congress-person and Senators–write them. Please act– this is not the time to [...]

March 20, 2013

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4:33 PM | Generalities of Science Ethics, Life in the Goldilocks Zone, and the Allan Hills Meteorite

INTRODUCTION The years 1996-2000 were interesting to the astronomy community for many reasons. Many will remember the pronouncement of Martian fossilized life and the huge groundswell of commentary that the Allan Hills meteorite garnered. And, it was during those years that NASA announced the past presence of water on the Martian surface. Thus it would [...]

March 15, 2013

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3:47 AM | Comment on Atmospheric Biosignatures and Habitability

The following post is based (in part) upon an article that appeared in the journal Astrobiology—Grenfell, et al. Volume 12, Number 12, 2012, Response of Atmospheric Biomarkers to NOx-Induced Photochemistry Generated by Stellar Cosmic Rays for Earth-like Planets in the Habitable Zone of M Dwarf Stars It is available behind a paywall. A major reason for [...]

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1:42 AM | Astronomers produce most detailed analysis of alien planet’s atmosphere

Astronomers produce most detailed analysis of alien planet’s atmosphere. In light of the finding–this is a great post. I thought I would reblog it since this is a subject which I am currently interested Many kudos to MSNBC!.

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1:29 AM | In the Atlantic Magazine: "The Sequester Is Going to Devastate U.S. Science Research for Decades"

Reblogged from Science Springs: This is copyright protected material, so just enough exploration to get you interested. Mar 12 2013 By Paul Alivisatos is director of Lawrence Berkeley National Laboratory. Eric D. Isaacs is director of Argonne National Laboratory. Thom Mason is director of Oak Ridge National Laboratory. "Cutting the meager amount the federal government [...]

March 13, 2013

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3:54 PM | You Are Stardust: Teaching Kids About the Universe in Stunning Illustrated Dioramas.

Reblogged from someone somewhere: “Every tiny atom in your body came from a star that exploded long before you were born.” “Everyone you know, everyone you ever heard of, every human being who ever was … lived there — on a mote of dust suspended in a sunbeam,”Carl Sagan famously marveled in his poeticPale Blue Dot monologue, [...]

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3:02 PM | Less than two weeks

Reblogged from Cristian Mihai: With less than two weeks until the Indiegogo campaign is over, we're at 73% funded. So here's that post that just might give it a little push. So, yeah, support this crazy Romanian kid get his novel published. Of course, for that to happen, you have to go here and see [...]

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2:42 PM | NASA rover reveals Mars was habitable

Reblogged from Eideard: NASA scientists say tests on a Mars rock show the planet could have supported primitive life. At a briefing at NASA's Washington headquarters on Tuesday, NASA scientist said that an analysis of a Mars rock sample by the Curiosity rover had unveiled minerals, including hydrogen, carbon and oxygen, that are the building [...]

March 11, 2013

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7:14 PM | Biosignatures Part IV: The James Webb Telescope

Up until now, I have spoken of current findings. However I will speak of a mission that is set to launch in the coming years. The James Webb is set to launch in 2018. The mission will consist of four science packages–(see links at end of post for the three other aspects of the telescope) [...]

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12:24 AM | Biosignatures Part III: Does Anyone See Life’s Signatures in Space . . . Is It The Technique?

RATIONALIZATION The efforts to detect a biosignature from a distant exo-planet hinge on efforts by researchers to understand how life may have originated. IN THE BEGINNING . . . ? Firstly, carbon (to the best of our knowledge) is the only stuff of life and it will form the largest tally of stable molecules. Secondly, water is a [...]

March 05, 2013

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6:39 AM | Biosignatures Part II: What is in the Pale Blue Dot—and Why?

In Part I, I introduced terms, and an infrared spectrum that characterizes our planet from afar. The picture of the “Pale Blue Dot” is us—and it was taken in 1994 from Voyager 1. The Voyager 1 probe, at that point, was entering the Kuiper Belt; the probe had finished its primary tasks. The “little probe [...]

March 03, 2013

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11:12 PM | Bio-signatures Part I

( http://visibleearth.nasa.gov/view.php?id=52392 ) The Visible Earth is part of the EOS Project Science Office located at NASA Goddard Space Flight Center Two primary definitions of a bio-signature: Any phenomenon produced by life (either modern or ancient). Two sub-definitions: Definitive Biosignature: A phenomenon produced exclusively by life. Due to its unique biogenic characteristics, a definitive biosignature can [...]

March 01, 2013

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8:46 PM | Shadow Biosphere: Mono Lake Hypothesis Redux

By John Jaksich The unfortunate refutation of Dr. Wolfe-Simon’s work by mainstream microbiology led me to further consider how and why the work was so far off? Reconsideration of the work leading-up to her “ground-breaking” paper does not, shall I say, add up correctly. The hypothesis of a possible “shadow” biosphere may not be too [...]

February 28, 2013

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4:48 PM | An Orderly Solar System?

Orderly Solar System by John Jaksich As the search for extra solar planets reaches dizzying counts, one may at times wonder why we are located in this particular galactic habitable zone. I am assuming that by the mid-point of 2013, the tally of extra solar planets may well be 800, if not greater. And, in [...]

February 25, 2013

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4:23 PM | I think this speaks for itself.

Reblogged from Science Over a Cuppa: http://youtu.be/MN8JYhByVYg If this video spoke to your heart, what part can you play to stop this from happening? For several years I've made a point to go out of my way to recycle. But I also realize that reusing and reducing what I use are just as important. And [...]

February 24, 2013

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8:26 AM | COMMENT ON SCIENCE COMMUNICATION AND ASTRONOMY

FINDING the F RING of SATURN: A COMMENT on ASTRONOMY and SCIENCE COMMUNICATION by John A. Jaksich The first time one gazes upon Saturn through a telescope one may wonder where and how did Saturn get its rings. Saturn’s system of rings is one of the most outstanding characteristics whch most will notice when learning the [...]

February 23, 2013

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7:10 PM | Pluto's Anniversay

Reblogged from Astronomy and Law: I would be remiss in my support of my favorite planet if I did not remember the anniversary of its discovery. Clyde Tombaugh, newly arrived at the Lowell Observatory, systematically reviewed images of the night sky in pairs of photographs taken two weeks apart using a blink comparator, He rapidly [...]

February 21, 2013

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4:34 PM | Space Race and Cold War: A Book Review

BOOK REVIEW—ROCKETS and PEOPLE by Boris Chertok Reviewer: John A. Jaksich The four volume series, Rockets and People by Academician Boris Chertok is a transliterative memoir/account from the Russian language of the space race—from its inception to the partial-democratization of the Soviet Union. The author—Boris Chertok—not only witnessed the space race, but was a major figure for [...]