Physics & Astronomy News

<p>Hologram of a single photon: reconstructed from raw measurements (left) and theoretically predicted (right).</p>

<p>Image Source: FUW</p>
Single light particle hologram created
Scientists at have created the first ever hologram of a single light particle.
<p>A new process allows materials synthesized at the nano-level to be scaled to larger sizes to take advantage of their mechanical, optical, and energy properties. Xiaoyu 'Rayne' Zheng, assistant professor of mechanical engineering, describes the process in the journal Nature Materials.</p>
Upsizing nanostructures into 3-D printed materials
A new process allows materials synthesized at the nano-level to be scaled to larger sizes to take advantage of their mechanical, optical, and energy properties.

<p>An artist’s portrayal of a Warm Jupiter gas-giant planet (r.) in orbit around its parent star, along with smaller companion planets. Image credit: Detlev Van Ravenswaay/Science Photo Library</p>
Warm Jupiters Not As Lonely As Expected
Astronomers have given us our clearest understanding yet of a class of exoplanets called “Warm Jupiters”, showing that many have unexpected planetary companions.
<p>STM scan (96 nm wide, 126 nm tall) of the 1 kB memory, written to a section of Feynman’s lecture There’s Plenty of Room at the Bottom (with text markup)</p>

<p><br />
Image courtesy: TUDelft</p>
Tiny hard disk writes information atom by atom
A team of scientists to build a memory of 1 kilobyte (8,000 bits), where each bit is represented by the position of one single chlorine atom.

Dark Energy Measured with Record-Breaking Map of 1.2 Million Galaxies
Physicists and astronomers have announced results from the largest-ever, three-dimensional map of distant galaxies.
What Did Earth’s Ancient Magnetic Field Look Like?
New work suggests Earth’s ancient magnetic field was significantly different than the present day field, originating from several poles rather than the familiar two.
Scientists’ Breakthrough In Modelling Universe
Research teams in Europe and the USA have begun modelling the universe for the first time using Einstein’s full general theory of relativity.

Science Facts

Powerful Quasars

by Chandra X-Ray Observatory Center and

: Image Courtesy NASA Quasars appear as distant, highly luminous objects that look like stars. Strong evidence now exists that a quasar is produced by gas falling into a supermassive black hole in the center of a galaxy. Quasars are peculiar objects that radiate as much energy per second as a thousand or more galaxies, from a region that has a diameter about one millionth that of the host galaxy. It is as if a powerhouse the size of a small flashlight produced as much light as all the houses and businesses in the entire L.A. basin!

Quasars are intense sources of X-rays as well as visible light. They are the most powerful type of X-ray source yet discovered. Some quasars are so bright that they can be seen at a distance of 12 billion light years.

The power of a quasar depends on the mass of its central supermassive black hole and the rate at which it swallows matter. Almost all galaxies, including our own, are thought to contain supermassive black holes in their centers. Quasars represent extreme cases where large quantities of gas are pouring into the black hole so rapidly that the energy output is a thousand times greater than the galaxy itself. A galaxy with a somewhat less active supermassive black hole is called an Active Galaxy and its black hole is called an 'Active Galactic Nucleus' or AGN. Our Milky Way Galaxy and our neighbor, the Andromeda Galaxy, are examples of normal galaxies, where the supermassive black hole has very little gas to capture.

Galileo at age 38.
Galileo Thermometers

Every substance has the property of 'mass', which is the basic physical presence of matter. Matter occupies space. A physical mass contained within a physical space produces the physical property of ' ...
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Artists conception of matter swirling around a black hole, both in the accretion disk and captured by the magnetic field.
Astronomers Glimpse Feeding Of A Galactic Dragon

A team of radio astronomers has found a cold ring of gas around a supermassive black hole in the fiery nuclear region of quasar galaxy 'QSO I Zw 1,' the most detailed observational evidence yet that g ...
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What Powered the Big Bang?

During the last decade, sky maps of the radiation relic of the Big Bang---first by NASA's Cosmic Background Explorer (COBE) satellite and more recently by other experiments, including Antarctic balloo ...
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Science Quote

'We are all in the gutter, but some of us are looking at the stars.'

Oscar Wilde

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