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The size and age of the universe, as well as how fast it is expanding, has been confirmed with a new, precise method that uses galaxies as lenses to look at other galaxies. The new measurement confirmed the age of the universe as 13.75 billion years old, to within 170 million years, and also confirmed the strength of dark energy, which is responsible for the accelerating expansion of the universe. When looking out at the cosmos, it can be difficult for scientists to distinguish between a very bright light far away and a dimmer source much closer to Earth. To circumvent this problem, a team of researchers used a technique called gravitational lensing to measure the distances light traveled from a bright, active galaxy to the Earth along different paths, along with data from the Hubble Space Telescope. Researchers can use the observations to infer not just how far away the galaxy lies but also the overall scale of the universe and some details of its expansion. Galactic Lenses Confirm Universe's Age, Size Galactic Lenses Confirm Universe's Age, Size
Un luna en llamas La luna joviana Ío alberga un lago global de roca derretida, bajo una superficie plagada de volcanes. Esa es la conclusión del nuevo análisis de los datos que hace una década obtuvo la sonda Galileo. Gagarin, 50 años después. Astroseti : Astronomía, Astrobiología, Astronautica y SETI Astroseti : Astronomía, Astrobiología, Astronautica y SETI
Universe Today The Falcon 9 and Dragon capsule stand ready for launch prior to the detection of a helium leak in one of the engines forcing a scrub of the launch attempt on April 14. 2014 – now reset to April 18, 2014. Credit: nasatech.net NASA and SpaceX are marching forward towards a Friday, April 18 liftoff attempt for the Falcon 9 rocket sending a commercial Dragon cargo craft on the company’s third resupply mission to the International Space Station following the scrubbed launch attempt on Monday, April 14 – forced by the discovery of a Helium gas leak inside the rocket during the latter stages of the countdown. An on time blastoff of the upgraded Falcon 9 sets the stage for an Easter Sunday rendezvous and berthing of the Dragon resupply spacecraft at the massive orbiting outpost packed with almost 5000 pounds of science experiments and supplies for the six person crew. However the weather prognosis is rather [click to continue…] Universe Today
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Cookies on the New Scientist website close Our website uses cookies, which are small text files that are widely used in order to make websites work more effectively. To continue using our website and consent to the use of cookies, click away from this box or click 'Close' Find out about our cookies and how to change them Compelling Coverage of Physics And Math from New Scientist - New Compelling Coverage of Physics And Math from New Scientist - New
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Space - Astronomy and Exploration
science::.. The Astrophysical Journal science::.. The Astrophysical Journal This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy. The Astrophysical Journal is the foremost research journal in the world devoted to recent developments, discoveries, and theories in astronomy and astrophysics. Many of the classic discoveries of the twentieth century have first been reported in the Journal.
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Physical Review Letters Physical Review Letters Cover Image: Phys. Rev. Lett.
Journals Online - Browse Journals By RSS/Atom Feeds What are RSS and Atom feeds? RSS and Atom news feeds are computer-readable files that summarise new content as it appears on a website. (RSS and Atom are just two different formats that do basically the same thing.) Each feed includes a heading, a brief description of the new content and a link through to the website. Journals Online - Browse Journals By RSS/Atom Feeds
25 Greatest Science Books of All Time Read an essay on the greatest science books by Nobel laureate Kary B. Mullis. 1. and 2. 25 Greatest Science Books of All Time