Physics & Astronomy News

	Covering all the angles</p>
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	Terahertz waves leak out of a small slit in the antenna at different angles, depending on frequency. The receiver can be tuned to select one angle, plucking a single data channel from a stream containing many channels.</p>
	<br />
	Mittleman lab/Brown University<br />
Researchers develop key component for terahertz wireless
Researchers from Brown University have developed what they believe to be the first system for multiplexing terahertz waves.
	Still image from animation of Philae separating from Rosetta and descending to the surface of comet 67P/Churyumov-Gerasimenko in November 2014.</p>
	Copyright ESA/ATG medialab</p>
Philae Probe Lands on the Rosetta Comet
ESA’s Rosetta mission has soft-landed its Philae probe on a comet, the first time in history that such an extraordinary feat has been achieved.

	Schematic of the new electricity generation technique. Bodies 1 and 2 have different work functions.<br />
	Credit: VTT</p>
New Technique for Generating Electricity Demonstrated
Scientists have demonstrated a new technique for generating electrical energy from mechanical vibrations.
	Telescopes at the Keck Observatory use adaptive optics, which enabled UCLA astronomers to discover that G2 is a pair of binary stars that merged together.<br />
	Credit: UCLA<br />
Astronomers Solve Puzzle About Bizarre Object at the Center of our Galaxy
Latest research suggests enormous black hole drove two binary stars to merge into one.

Existence of Interacting Parallel Worlds Proposed
Many Interacting Worlds theory challenges foundations of quantum science
Universe May Face a darker future
New research offers a novel insight into the nature of dark matter and dark energy and what the future of our Universe might be.
Planet-forming Lifeline Discovered in a Binary Star System
Scientists have detected a streamer of dust and gas flowing from a massive outer disk toward the inner reaches of a binary star system.

Science Facts

From Here To There

by Gene Mascoli and

Image of the spiral galaxy NGC 4414: Image Courtesy NSSDC Photo Gallery We all know that our galaxy, the Milky Way, is big -- very big. So big in fact that its size is impossible to grasp. To cope with the astronomical distances of galaxies, since miles or kilometers won't do, scientists have had to resort to using a really big yardstick. That yardstick is the distance light travels in one year, what scientists call a 'light year.' A light year is an obvious choice. It makes use of a concept that we are all familiar with, a year, the time it takes Earth to travel around our Sun. It also makes use of something that eats up a lot of miles, the distance light, traveling at 186,000 miles per second, covers in one year, 5 trillion, 880 billion miles or, approximately 6 million million miles.

Now for some of you, the concept of a light year is familiar. But that's the point. It sounds familiar and tame to say that Alpha-Centauri, our nearest star, is 4.3 light years away. But if we add the zeros, we truly see how isolated we are, circling our Sun in our corner of the Milky Way. Alpha-Centauri is 25,000,000,000,000 miles from Earth.

Now consider that the most distant objects that we can see without a telescope are about 1.75 million light years away. There we go again -- big numbers. But that's a big number of something that already is a gigantic number. And that doesn't even take into consideration what the Hubble Space Telescope can see, distances of over 7 billion light years away. We are just now seeing light that left those distance realms in the early days of the universe. The universe is indeed a very, very big place.

A solar flare with an eruptive prominence on the limb of the sun.
Is There Weather In Space?

Space weather occurs in the area between the Earth and the Sun and refers to the disturbances and storms that swirl through space, which could have adverse effects on human activities. These disturban ...
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Gravity Is the Weakest!
The Weakest Force

Did you know that gravity is the weakest force in the universe? Well, it's true! There are four fundamental forces (that we know of) in our universe: Strong Nuclear, Electromagnetic, Weak Nuclear an ...
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The Chandra Mission

NASA's Chandra X-ray Observatory, which was launched and deployed by Space Shuttle Columbia on July 23, 1999, is the most sophisticated X-ray observatory built to date. Chandra is designed to observe ...
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Science Quote

'Strange is our situation here upon the earth. Each of us comes for a short visit, not knowing why, yet sometimes seeming to divine a purpose.'

Albert Einstein

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