Space Image: A bright sun and earth's horizon seen from the space station

September 14, 2011

A Bright Sun and Earth's Horizon Seen From the Space Station

Enlarge

Image Credit: NASA

The bright sun, a portion of the International Space Station and Earth's horizon are featured in this image photographed during the STS-134 mission's fourth spacewalk in May 2011.

The image was taken using a fish-eye lens attached to an electronic still camera.

Provided by JPL/NASA search and more info website

Filter


Move the slider to adjust rank threshold, so that you can hide some of the comments.


Display comments: newest first

omatumr
Sep 14, 2011

Rank: 1 / 5 (6)
Thanks for the space image.

It contrasts well the cold dark emptiness of space with the source of heat and light that sustains us.

It also suggests the foolishness of attributing climate change to CO2 instead of the Sun.

1. "Super-fluidity in the solar interior:
Implications for solar eruptions and climate",
Journal of Fusion Energy 21, 193-198 (2002):

http://arxiv.org/.../0501441

2. "Earth's Heat Source - The Sun",
Energy and Environment 20, 131-144 (2009):

http://arxiv.org/pdf/0905.0704

3. "Neutron Repulsion", The
APEIRON Journal, in press (2011):

http://arxiv.org/...2.1499v1

With kind regards,
Oliver K. Manuel
Former NASA Principal
Investigator for Apollo
ScottyB
Sep 14, 2011

Rank: 1 / 5 (1)
fantastic image!
jsdarkdestruction
Sep 14, 2011

Rank: 5 / 5 (4)
how does this picture " also suggests the foolishness of attributing climate change to CO2 instead of the Sun."?
omatumr
Sep 14, 2011

Rank: 1 / 5 (3)
Earth is a tiny speck of dirt that lies between the cold dark emptiness of space and a violently unstable, energetic pulsar.

See [1-3] above and [4] below:

"Life arose as a non-equilibrium thermodynamic process to dissipate the photon potential generated by the hot Sun and cold outer space.

Evidence from the geochemical record of the evolutionary history of life on Earth suggests that life originated in a hot aqueous environment dissipating UV light and evolved later to dissipate visible light. This evidence places constraints on models of solar origin and evolution.

The standard solar model seems less compatible with the data than does the pulsar centered solar model."

4. "Origin and evolution of life constraints on the solar
model," Journal of Modern Physics 2, 587-594 (2011)


http://dl.dropbox...5079.pdf
yyz
Sep 14, 2011

Rank: 5 / 5 (3)
"Earth is a tiny speck of dirt that lies between the cold dark emptiness of space and a violently unstable, energetic pulsar."

If true, how do any of the terrestrial planets retain any shred of an atmosphere beyond a few ions blasted off their surfaces, like the exospheres of Mercury and the Moon? CoRoT-2b, with a mass of 3 Jupiters, is rapidly losing it's atmosphere due to energetic radiation from it's parent star(not even a pulsar): http://www.physor...ays.html

A recent study of the Crab pulsar found evidence for a termination shock boundary, where relativistic particles decelerate and emit x-rays, at a distance of 10 *light-days* from the pulsar: http://arxiv.org/...2868.pdf

Some pulsar wind nebulae are observed to extend over a dozen light years from their source. How could a lush, life-filled world like Earth evolve 150,000,000km from a pulsar?
yyz
Sep 14, 2011

Rank: 5 / 5 (3)
Another point I'm curious about. Why wouldn't the now mature science of helioseismology be able to discern a solar mass pulsar somewhere beneath the photosphere. The technique is uniquely sensitive to mass and density variations within the sun.

A recent paper studied the possibility of using helioseismology to search for primordial black holes and found the technique to be sensitive to masses as little as 10^21 g: http://arxiv.org/...11v1.pdf

Given this sensitivity, it seems like a solar mass pulsar would be hard to miss!
omatumr
Sep 15, 2011

Rank: 1 / 5 (2)
Fortunately, yyz, between you and the pulsar today are:

a.) A mantle made mostly of Fe, O, Ni, Si, S, Mg and Ca

b.) A photosphere of gaseous waste products (H and He)

Initially there was less protection and d- and l-amino acids were separated by circular polarized light from the pulsar.

The wavelength of light likely increased (become less energetic) as shielding separated Earth from the pulsar.

Life evolved on Earth as the Sun evolved:

http://dl.dropbox...5079.pdf

With kind regards,
Oliver
Rank 5 /5 (3 votes)
Relevant PhysicsForums posts
  • Distance of planets from stars and revolution
    created4 hours ago
  • revamping general concept and cosmological principle
    createdMay 25, 2012
  • Transiting Exoplanet Light Curve
    createdMay 25, 2012
  • Math behind Theoretical Physics
    createdMay 24, 2012
  • Do we know whats at the center of galaxies yet?
    createdMay 23, 2012
  • Structure of the Milky Way?
    createdMay 20, 2012
  • More from Physics Forums - General Astronomy

More news stories

Land and sea species differ in climate change response: study

(Phys.org) -- Marine and terrestrial species will likely differ in their responses to climate warming, new research by Simon Fraser University and Australia’s University of Tasmania has found.

Space & Earth / Environment

created 2 hours ago | popularity 5 / 5 (2) | comments 2 | with audio podcast

Yale study concludes public apathy over climate change unrelated to science literacy

Are members of the public divided about climate change because they don't understand the science behind it? If Americans knew more basic science and were more proficient in technical reasoning, would public consensus match ...

Space & Earth / Environment

created 4 hours ago | popularity 4 / 5 (1) | comments 11 | with audio podcast

10 million years needed to recover from mass extinction

It took some 10 million years for Earth to recover from the greatest mass extinction of all time, latest research has revealed.

Space & Earth / Earth Sciences

created 4 hours ago | popularity not rated yet | comments 1 | with audio podcast

Sophisticated simulations predict future warming

The chances of our planet being hit by a global warming of 3 degrees Celsius by 2050 is as likely as it being hit by an increase of 1.4 degrees, new research shows. Presented in the journal Nature Geoscience, the British study ...

Space & Earth / Earth Sciences

created May 22, 2012 | popularity 4.4 / 5 (9) | comments 51

Aliens don't want to eat us, says former SETI director

Alien life probably isn’t interested in having us for dinner, enslaving us or laying eggs in our bellies, according to a recent statement by former SETI director Jill Tarter.

Space & Earth / Space Exploration

created May 25, 2012 | popularity 4.4 / 5 (14) | comments 40


Nvidia trumpets Tegra 3 phone design wins for 2012

(Phys.org) -- Nvidia’s competitive war paint has a name, Tegra 3. On the heels of Nvidia announcements about lowering costs of its Tegra 3 processors and Nvidia-enabled tablets running Android Ice Cream ...

'Unzipped' carbon nanotubes could help energize fuel cells, batteries

Multi-walled carbon nanotubes riddled with defects and impurities on the outside could replace some of the expensive platinum catalysts used in fuel cells and metal-air batteries, according to scientists at ...

T cells 'hunt' parasites like animal predators seek prey, study shows

By pairing an intimate knowledge of immune-system function with a deep understanding of statistical physics, a cross-disciplinary team at the University of Pennsylvania has arrived at a surprising finding: T cells use a movement ...

Computer model used to pinpoint prime materials for efficient carbon capture

When power plants begin capturing their carbon emissions to reduce greenhouse gases – and to most in the electric power industry, it's a question of when, not if – it will be an expensive undertaking.

Change in developmental timing was crucial in the evolutionary shift from dinosaurs to birds: study

At first glance, it's hard to see how a common house sparrow and a Tyrannosaurus Rex might have anything in common. After all, one is a bird that weighs less than an ounce, and the other is a dinosaur that ...

Scientist: Evolution debate will soon be history

(AP) -- Richard Leakey predicts skepticism over evolution will soon be history. Not that the avowed atheist has any doubts himself.