Reader (1000+) Galactic Lenses Confirm Universe's Age, Size. 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. Size and age How it works ? Astroseti : Astronomía, Astrobiología, Astronautica y SETI. Universe Today. Space News. Science Blogs. Compelling Coverage of Physics And Math from New Scientist - New. 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 Physics & Math Log in Your login is case sensitive I have forgotten my password close My New Scientist Look for Science Jobs Light-bending black hole mimic is first you can watch What has the Higgs boson done for us?
LHC spots particle that may be new form of matter TODAY: 22:31 10 April 2014 Can matter be made of four quarks bound together? Banish jet lag with a handy mathematical scheduler TODAY: 22:00 10 April 2014 An app based on a complex mathematical model promises full recovery from jet lag in just a few days, even for extreme time zone shifts The fourth state of matter: Consciousness THE BIG IDEA: 20:00 09 April 2014 Dark matter hunters turn to nano-blasts and enzyme ice Most read.
Astrophysics News. Space - Astronomy and Exploration. Science::.. The Astrophysical Journal. Physicsworld.com. Science::.. The Astronomical Journal. Spotlighting exceptional research. Physical Review Focus. Physical Review Letters. 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. Stay in touch with new publishing News feeds are a very convenient way of keeping up-to-date with a large number of websites. . ‘ Syndicating ’ content News feeds are also an easy way for other websites to get and display content. How can I get Cambridge Journals Online feeds?
You need to install a newsreader on your computer. 25 Greatest Science Books of All Time. Read an essay on the greatest science books by Nobel laureate Kary B. Mullis. 1. and 2. The Voyage of the Beagle (1845) and The Origin of Species (1859) by Charles Darwin [tie] One of the most delightful, witty, and beautifully written of all natural histories, The Voyage of the Beagle recounts the young Darwin's 1831 to 1836 trip to South America, the Galápagos Islands, Australia, and back again to England, a journey that transformed his understanding of biology and fed the development of his ideas about evolution. Yet Darwin's masterwork is, undeniably, The Origin of Species, in which he introduced his theory of evolution by natural selection. "The most important science book of all time. 3.
Dramatic is an unlikely word for a book that devotes half its pages to deconstructions of ellipses, parabolas, and tangents. Principia marks the dawn of modern physics, beginning with the familiar three laws of motion ("To every action there is always opposed an equal reaction" is the third). 4.