Showing posts with label pictures of nature. Show all posts
Showing posts with label pictures of nature. Show all posts
Sunday, August 14, 2011
Sunday, August 7, 2011
Universe_Nasa_Spazio_Google_Images
The recent mesaurements made by the scientists and engineers of the CNES (Centre National d’Études Spatiales) in collaboration with the JET PROPULSION LABORATORY OF NASA,show that the universe is flat and it will continue expandind at an increasing speed.
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| Universe_Nasa_Spazio_Google_Images Universe Wallpaper |
WALLPAPER
The main cause of this expansion is believed to be the infamous dark energy,a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe and currently accounts for 74% of the total mass-energy of the universe.
Scientist were able to examine the effects of dark energy,by studing Abel 1689 the most massive galaxy clusters.The gravity of its trillion stars, plus dark matter, acts like a 2-million-light-year-wide “lens” in space. The gravitational lens bends and magnifies the light of galaxies far behind it,and by observing such images,the astronomists are able do determine the speed and acceleration of our universe.
The implications of such results are as infinte as the expansion of the universe itself,in fact these mesaurements break down the sustainers of the “shrink theory” aka the ones who thought that the universe would stop expandind at a certain point and shrink back to where everything started from,the big bang.
The future of o
ur universe is not very bright either,in a few billion years it will become a cold place and all of the stars like our son will finish their nuclear fuel and put out like candles on a birthday cake.
Dawn_Spacecraft_Google_Images_1
Universe_Google_Images_Planet
Saturday, August 6, 2011
Thursday, August 4, 2011
NASA Announces News Briefing on Mars Orbiter Science Finding
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| Planet Mars |
NASA will host a news briefing on Thursday, Aug. 4, at 11 a.m. PDT (2 p.m. EDT) about a significant new Mars science finding.
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Slice of History: Low Speed Wind Tunnel
Slice of History: Low Speed Wind Tunnel: "
Each month in “Slice of History” we feature a historical photo from the JPL Archives. See more historical photos and explore the JPL Archives at https://beacon.jpl.nasa.gov/.
In December 1974, this photo was taken of the Low Speed Wind Tunnel. NASA’s Jet Propulsion Laboratory had 21-, 20-, and 12-inch wind tunnels that were very well documented, but an April 1967 report about JPL wind tunnels does not mention this facility and very little is known about it. It appears in 1961 drawings of building 80, which was next door to the main wind tunnel building but it may have been relocated years later. The March 1968 JPL telephone book indicates that there was a Low Density Wind Tunnel in building 183, room 601, belonging to the Fluid Physics Section. The section number prefix for this image indicates that it was photographed for the Research and Advanced Concepts Section, but the photo was taken at the request of Paul Massier of the Structures and Dynamics Section. Massier was seen in the June “Slice of History” blog taken in the anechoic chamber.
This post was written for “Historical Photo of the Month,” a blog by Julie Cooper of JPL’s Library and Archives Group.
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PICTURES OF NATURE & UNIVERSE PHOTOGRAPHY
By Julie Cooper
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| Slice of History: Low Speed Wind Tunnel |
In December 1974, this photo was taken of the Low Speed Wind Tunnel. NASA’s Jet Propulsion Laboratory had 21-, 20-, and 12-inch wind tunnels that were very well documented, but an April 1967 report about JPL wind tunnels does not mention this facility and very little is known about it. It appears in 1961 drawings of building 80, which was next door to the main wind tunnel building but it may have been relocated years later. The March 1968 JPL telephone book indicates that there was a Low Density Wind Tunnel in building 183, room 601, belonging to the Fluid Physics Section. The section number prefix for this image indicates that it was photographed for the Research and Advanced Concepts Section, but the photo was taken at the request of Paul Massier of the Structures and Dynamics Section. Massier was seen in the June “Slice of History” blog taken in the anechoic chamber.
This post was written for “Historical Photo of the Month,” a blog by Julie Cooper of JPL’s Library and Archives Group.
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PICTURES OF NATURE & UNIVERSE PHOTOGRAPHY
Comments on The Remarkable Spirit Rover
By John Callas
Below are remarks made by Mars Exploration Rover Project Manager John Callas at the NASA Jet Propulsion Laboratory’s Spirit Celebration on July 19, 2011.
“We are here today to celebrate this great triumph of exploration, the incredible mission of this Mars rover. As bittersweet as the conclusion of Spirit’s time on Mars is for each of us, our job was to get to this day. To wear these rovers out, to leave behind no unutilized capability on the surface of Mars. For Spirit, we have done that.
What is truly remarkable is how much durability and capability Spirit had. These rovers were designed for only 90 days on the surface and one kilometer of driving distance. On her last day, Spirit had operated for 2210 Martian days, drove over 7730 meters and returned over 124 thousand images.
But it is not how long this rover lasted or how far she had driven, but how much exploration and scientific discovery she has accomplished. Spirit escaped the volcanic plains of Gusev Crater, mountaineer-ed up the Columbia Hills, survived three cold, dark Martian winters and two rover-killing dust storms, and surmounted debilitating hardware malfunctions. But out of this adversity, she made the most striking scientific discoveries that have forever changed our understanding of the Red Planet.
With the rovers originally designed only for a limited stay in the relatively comfortable environment of the Martian summer, the many years of extended operation meant these vehicles operate most of their time in the extreme environments of frigid temperatures and dark skies, well outside of their original design limits. The longevity and productivity of these rovers under such severe environmental conditions speak to the talent and dedication of the people, who designed, built, tested and operated these vehicles.
Spirit’s discoveries have changed our understanding of the Red Planet. We know now that Mars was not always a cold, dry and barren planet. That at one time liquid water flowed on it surface, sustained by a thicker atmosphere and warmer temperatures. At least, kilometer-scale lakes persisted in places. And that there were even sources of energy, hydrothermal systems, that could have supported life in this earlier habitable world.
We can’t do the impossible, make these machines operate forever. But, we have come as close to that as humans can. Spirit’s very accomplished exploration of Mars has rewritten the textbooks about the planet. Further, this rover has changed our understanding of ourselves and of our place in the Universe and approached questions of, are we alone and what is the future of this world?
But, beyond all the exploration and scientific discovery, Spirit has also given us a great intangible. Mars is no longer this distant, alien world. It is now our neighborhood. We go to work on Mars everyday.
But, let’s also remember that Spirit’s great accomplishments did not come at the expense of some vanquished foe or by outscoring some opponent. Spirit did this, we did this - to explore, to discover, to learn - for the benefit of all humankind. In that respect, these rovers represent the highest aspiration of our species.
Well done little rover. Sleep in peace. And, congratulations to you all. Thank you very much.”
"
PICTURES OF NATURE & UNIVERSE PHOTOGRAPHY
 |
| Comments on The Remarkable Spirit Rover |
Below are remarks made by Mars Exploration Rover Project Manager John Callas at the NASA Jet Propulsion Laboratory’s Spirit Celebration on July 19, 2011.
“We are here today to celebrate this great triumph of exploration, the incredible mission of this Mars rover. As bittersweet as the conclusion of Spirit’s time on Mars is for each of us, our job was to get to this day. To wear these rovers out, to leave behind no unutilized capability on the surface of Mars. For Spirit, we have done that.
What is truly remarkable is how much durability and capability Spirit had. These rovers were designed for only 90 days on the surface and one kilometer of driving distance. On her last day, Spirit had operated for 2210 Martian days, drove over 7730 meters and returned over 124 thousand images.
But it is not how long this rover lasted or how far she had driven, but how much exploration and scientific discovery she has accomplished. Spirit escaped the volcanic plains of Gusev Crater, mountaineer-ed up the Columbia Hills, survived three cold, dark Martian winters and two rover-killing dust storms, and surmounted debilitating hardware malfunctions. But out of this adversity, she made the most striking scientific discoveries that have forever changed our understanding of the Red Planet.
With the rovers originally designed only for a limited stay in the relatively comfortable environment of the Martian summer, the many years of extended operation meant these vehicles operate most of their time in the extreme environments of frigid temperatures and dark skies, well outside of their original design limits. The longevity and productivity of these rovers under such severe environmental conditions speak to the talent and dedication of the people, who designed, built, tested and operated these vehicles.
Spirit’s discoveries have changed our understanding of the Red Planet. We know now that Mars was not always a cold, dry and barren planet. That at one time liquid water flowed on it surface, sustained by a thicker atmosphere and warmer temperatures. At least, kilometer-scale lakes persisted in places. And that there were even sources of energy, hydrothermal systems, that could have supported life in this earlier habitable world.
We can’t do the impossible, make these machines operate forever. But, we have come as close to that as humans can. Spirit’s very accomplished exploration of Mars has rewritten the textbooks about the planet. Further, this rover has changed our understanding of ourselves and of our place in the Universe and approached questions of, are we alone and what is the future of this world?
But, beyond all the exploration and scientific discovery, Spirit has also given us a great intangible. Mars is no longer this distant, alien world. It is now our neighborhood. We go to work on Mars everyday.
But, let’s also remember that Spirit’s great accomplishments did not come at the expense of some vanquished foe or by outscoring some opponent. Spirit did this, we did this - to explore, to discover, to learn - for the benefit of all humankind. In that respect, these rovers represent the highest aspiration of our species.
Well done little rover. Sleep in peace. And, congratulations to you all. Thank you very much.”
"
PICTURES OF NATURE & UNIVERSE PHOTOGRAPHY
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