martes, 27 de septiembre de 2016
viernes, 23 de septiembre de 2016
Interesantísimo este proyecto de una empresa holandesa, que permitiría tener mejores carreteras, evitaría el consumo de un hidrocarburo cuya producción es altamente contaminante y a la vez generaría incentivos para limpiar el mar.
sábado, 17 de septiembre de 2016
Everything started in 1957 when the Soviets launched the first artificial satellite, Sputnik 1, into space. The first U.S. satellite, Explorer 1, went into orbit two years later in 1958. In 1961 the next milestone is space exploration has been achieved – Yuri Gagarin became the first human to orbit Earth. His flight lasted 108 minutes, and Gagarin reached an altitude of about 202 miles (327 kilometers). We had to wait 8 years to 1969 for Astronaut Neil Armstrong to take “a giant step for mankind” as he stepped onto the moon… The road to space exploration has been long and often bumpy but we have managed to achieve a lot.
The awesome poster called Chart of Cosmic Exploration documents every major space mission starting from the Luna 2 in 1959 to the DSCOVR in 2015. The map traces the trajectories of every orbiter, lander, rover, flyby, and impactor which ever left the Earth’s orbit and successfully completed its mission. Additionally each poster features an array of over 100 exploratory instruments with hand-illustrated renderings of each spacecraft. It’s awesome and beautiful!
Fuente de la imagen: https://cdn.shopify.com/s/files/1/0211/4926/files/P-Space_Zoom-5.jpg?5345095695092540559
miércoles, 14 de septiembre de 2016
An all-sky view of stars in our Galaxy – the Milky Way – and neighbouring galaxies, based on the first year of observations from ESA’s Gaia satellite, from July 2014 to September 2015.
This map shows the density of stars observed by Gaia in each portion of the sky. Brighter regions indicate denser concentrations of stars, while darker regions correspond to patches of the sky where fewer stars are observed.
The Milky Way is a spiral galaxy, with most of its stars residing in a disc about 100 000 light-years across and about 1000 light-years thick.
This structure is visible in the sky as the Galactic Plane – the brightest portion of this image –which runs horizontally and is especially bright at the centre. Darker regions across the Galactic Plane correspond to dense clouds of interstellar gas and dust that absorb starlight along the line of sight.
Many globular and open clusters – groupings of stars held together by their mutual gravity – are also sprinkled across the image. Globular clusters, large assemblies of hundreds of thousands to millions of old stars, are mainly found in the halo of the Milky Way, a roughly spherical structure with a radius of about 100 000 light-years, and so are visible across the image.
Open clusters are smaller assemblies of hundreds to thousands of stars and are found mainly in the Galactic Plane.
The two bright objects in the lower right of the image are the Large and Small Magellanic Clouds, two dwarf galaxies orbiting the Milky Way. Other nearby galaxies are also visible, most notably Andromeda (also known as M31), the largest galactic neighbour to the Milky Way, in the lower left of the image. Below Andromeda is its satellite, the Triangulum galaxy (M33).
A number of artefacts are also visible on the image. These curved features and darker stripes are not of astronomical origin but rather reflect Gaia’s scanning procedure. As this map is based on observations performed during the mission’s first year, the survey is not yet uniform across the sky. These artefacts will gradually disappear as more data are gathered during the five-year mission.
High resolution versions of the Gaia map, with transparent background, are available to download from: http://sci.esa.int/gaia/58209