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Author: admin, 28.12.2015. Category: Positive Affirmations Quotes

Lake Gairdner in central South Australia is pictured in this image acquired by Japan’s ALOS satellite on 1 December 2009.
The Lake Gairdner National Park – which includes the nearby lakes Everard and Harris – was established in 1991 for its signi?cant wildlife habitat and natural features. While the area is hot and dry in summer, spring brings water and is a popular destination for birdwatchers. When flooded, Gairdner is one of the largest salt lakes in Australia, more than 160 km long and 48 km wide.
This image was recorded on 11 August 2014 using one of the 8 m-diameter telescopes of the European Southern Observatory’s Very Large Telescope in Chile. Although faint, the comet is clearly active, revealing a dusty coma extending at least 19 000 km from the nucleus.
At the moment, the comet is visible only from the southern hemisphere and, at more than 500 million km from the Sun, it is still very faint.
A large collaboration of astronomers across the world has been working to make the most of the unique opportunity to observe the comet from the ground while Rosetta is performing measurements at the comet. The Galileo operations team, joined by Director General Jean-Jacques Dordain, Director of Human Spaceflight and Operations Thomas Reiter and experts from European industry, seen in the Main Control Room at ESA’s Space Operations Centre, 28 August 2014. For months prior to each Galileo satellite launch, a joint team of European mission operations experts from ESA and France’s CNES space agency train intensively for the critical launch and early orbit phase.
The team is highly integrated, with individual experts contributing to all the usual functional areas – including satellite operations, ground stations and flight dynamics – based on expertise and regardless of their Agency affiliation, making this a unique and truly European team. On 22 August, the most recent pair of Galileo satellites, numbers 5 and 6, were released into a lower and elliptical orbit instead of the expected circular orbit.
The launch anomaly presented a sudden and unexpected – though not untrained for – challenge to the joint team at ESA’s European Space Operations Centre (ESOC) in Darmstadt, Germany. Working around the clock, the team characterised the actual orbits of the two, established full communications, diagnosed satellite problems (due to each having an undeployed solar panel), devised and followed an entirely new procedure for deployment, brought their systems into full operation and achieved a safe and fully controlled flight mode. This vast enclosure, made to appear larger still by an array of mirrors at its end, is ESA’s Large Space Simulator. Europe’s largest vacuum chamber, the LSS subjects entire satellites to space-like conditions ahead of launch.
This 15 m-high and 10 m-diameter chamber is cavernous enough to accommodate an upended double decker bus. The 121-segment mirror array seen in the image reflects simulated sunlight into the chamber, at the same time as the walls are pumped full of –190°C liquid nitrogen, together recreating the extreme thermal conditions prevailing in orbit. Embedded sensors and measurement devices check whether a mission’s thermal engineers have done their job well, and if the test satellite maintains an acceptable internal temperature range without buckling or other unwanted temperature-driven effects. The LSS – seen here during a past refurbishment– is an essential part of ESA’s Test Centre in the Netherlands, the largest facility of its kind in Europe, providing a complete suite of equipment for all aspects of satellite testing under a single roof. Just hours later they landed safely in Kazakhstan ending their 167-day stay in space as members of the ISS Expedition 39 and Expedition 40 crews.
Saturn's innermost moon Pan, orbits the giant planet, seemingly alone in a ring gap its own gravity creates.
Pan (28 kilometres across) maintains the Encke Gap in Saturn's A ring by gravitationally nudging the ring particles back into the rings when they stray in the gap. The view was acquired at a distance of approximately 3.2 million kilometres from Pan and at a Sun-Pan-spacecraft, or phase, angle of 56 degrees. Vladimir Pletser, ESA’s parabolic flight campaign manager, during one of  the final flights with the ‘Zero-G’ Airbus.

The world’s largest aircraft for parabolic flights took its last trips  to weightlessness for ESA science this week.
Members of the NEEMO 19 crew participate in an underwater excursion outside the Aquarius habitat.
NEEMO’s underwater habitat off Florida acts as makeshift a space base for astronauts to make regular ‘waterwalks’ in full scuba gear. While camping may appeal to some, scientists recently took the pastime to punishing limits.
Considered a barometer of climate change, diminishing polar ice has been a hot topic for a number of years.
Over the last few decades, satellites have shown a downward trend in the area of Arctic Ocean covered by ice. Understanding changes in ice thickness is crucial to working out how the actual volume is varying a€“ a better indicator of change in the Arctic environment. Given the crucial nature of understanding the links between ice and climate, as well as the environmental consequences of change, ESA goes to great lengths to make sure that the measurements taken by CryoSat are accurate.
This means venturing out to the far reaches of the polar regions to collect readings to compare with those from CryoSat. The chilly work includes taking independent measurements of the ice using special sensors on aircraft, along with painstakingly measuring snow and ice depth actually on the sea ice.
Reflecting the value and importance of ESA's ice mission, scientists from numerous European and North American organisations volunteered to endure the harsh polar environment in these extensive field campaigns. Over the course of several weeks, teams flew out over the sea ice from northern Canada and Greenland. As far as possible, measurements were taken directly under CryoSat as it orbited above so direct comparisons can be made.
Accompanied by two seasoned polar explorers, a joint ESAa€“NASA team set up camp on the ice. Interestingly, it was the CryoSat satellite itself that provided essential information to assure the ground team that the ice was thick enough to camp and for the planes to land safely. As well as being experienced in taking scientific measurements, the polar explorers have a deep appreciation of how the ice behaves and are responsible for keeping the ground team safe. This includes making sure team members keep warm in an environment that is typically around a€“30A°C, that they eat and drink enough and that they stay alert to the risk of polar bears. Dutch explorer Marc Cornelissen said, "To give an indication of the conditions the team faced, it was so cold that the three different generators used to power the scientific instruments kept breaking down. Christian Haas from Canada's York University noted, "Our ice-thickness measurements showed that, in many cases, the newer first year ice was actually thicker than the older multiyear ice. ESA's CryoSat Mission Manager, Tommaso Parrinello, said, "The success of the campaign was thanks to the tremendous collaborative effort from our international partners; from those who took measurements from the Twin Otter and Basler aircraft and from NASA's P3 plane and from the intrepid team out on the ice.
Arctic sea ice, which has been declining in area by unprecedented amounts in summer, is also falling in volume, the European Space Agency (ESA) said on Wednesday. How much is the polar ice melting, and how are the sheets being affected by climate change? Researchers have discovered a handful of 'bright spots' among the world's embattled coral reefs, offering the promise of a radical new approach to conservation. May's temperatures broke global records yet again, as the northern hemisphere finishes its hottest spring on record, statistics released Tuesday by NASA showed. Reptiles rapidly invaded the seas soon after a global extinction wiped out most life on Earth, according to a new study led by University of California, Davis, researchers.

La multinacional espanola especializada en diseno, ingenieria, fabricacion e instalacion de sistemas de andamiaje, y la compania francesa experta en tratamientos de superficies, aislamiento industrial y proteccion pasiva contra incendios, crean la nueva empresa Resa Prezioso Servicios Industriales. Actualmente, existen tres iniciativas privadas para comercializar y distribuir el recurso hidrico en el norte, centro y sur del pais. Los vehiculos afectados fueron fabricados entre octubre de 2005 y noviembre de 2012 y 35.260 de ellos estan en Espana. El fabricante britanico de smartphones Wileyfox se ha presentado oficialmente en Espana, pais al que llega despues de su lanzamiento en Reino Unido a finales del pasado curso. The Environmental Services Association (ESA) is working to transform waste and resource management in the UK.
The sector collects over £1 billion each year in landfill tax alone, and pays business rates to local communities. But when dry, the vast salt pan attracts racers attempting to set land speed records and is the site for the annual Speed Week event. Meanwhile, astronomers on Earth have been busy following the comet with ground-based telescopes.
The comet's dusty veil is not symmetrical as the dust is swept away from the Sun – located beyond the lower-right corner of the image – to begin forming a tail. In addition, it currently sits in a patch of the sky where it is camouflaged against the crowded starry background of the Milky Way.
Once the top and side hatches are sealed, high-performance pumps create a vacuum a billion times lower than standard sea level atmosphere, held for weeks at a time during test runs. Scientists think similar processes might be in action during the formation of some planets.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on 3 May 2014.
The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. ESA astronaut Andreas Mogensen (in the foreground) and ESA astronaut trainer Herve Stevenin are part of the four-strong crew.
Enduring the bitter Arctic cold out on the sea ice, they were part of a major international effort to ensure ESA's CryoSat satellite is delivering a true picture of Earth's changing ice. However, until CryoSat was launched in 2010, very little information was available on the thickness of the ice. NASA also contributed to this international effort as part of their Operation IceBridge ice survey. As Rosetta is deep inside the ‘atmosphere’ coma – it was 100 km from the nucleus on 6 August, and has been getting much closer since then – the only way to view the whole comet is to ‘stand back’ and observe it from Earth. For these reasons, the image was compiled by superimposing 40 individual exposures, each lasting about 50 seconds, and removing background stars. Two images with different exposure times were combined to bring out the faint details in this very high contrast situation.

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