Liora Roth

27 Flips | 4 Magazines | @LioraRoth | Keep up with Liora Roth on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Liora Roth”

6 Proven Ways to Boost the Conversion Rates of Your Call-to-Action Buttons

Visitors who don’t click don’t convert.<p>As marketers, we know this to be true.<p>Your visitors can’t get through your checkout process or sign-up form …

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Red Planet Rising: Mars Shines Brighter Than It Has in Years

If you want to see Mars at its best, now's your time: This month, the Red Planet looks bigger and brighter than it has for the past six years.<p>That may sound like the Great Mars Hoax — the occasional (and totally false) claim that Mars will loom as big as the moon in the night sky. But in this case, …

Astronomer Says Spiritual Phenomena Exist in Other Dimensions

<b>Astronomer and mathematician Bernard Carr theorizes that many of the phenomena we experience but cannot explain within the physical laws of this</b> …

Scientists Baffled by Mysterious Force Tossing Stars Out of Our Galaxy

Something is hitting stars in our Milky Way galaxy with such force that they are reaching the million-plus mile-per-hour velocity needed to break …

Do you suffer from anxiety? A team of scientists are attempting to 'gamify' psychological intervention with a specially developed therapeutic mobile game. Just 25 minutes spent playing the game has been proven to help reduce anxiety in sufferers. Check out the project at http://cnet.co/1gSd5Rh

Stephen Hawking: Space exploration is vital to our future

<b>(AP Photo/Ted S. Warren)</b><p>He told the Explorer’s Club that we’d be “castaways on a desert island not trying to escape” if we don’t explore<p>Sarah Gray<p>March 19, 2014 7:49pm (UTC)<p>SpaceX, the commercial spaceflight company, will launch its third commercial resupply mission on March 30, 2014. The mission, …

When a massive star runs out fuel, it collapses and explodes as a supernova. Although these explosions are extremely powerful, it is possible for a companion star to endure the blast. A team of astronomers using NASA’s Chandra X-ray Observatory and other telescopes has found evidence for one of these survivors. This hardy star is in a stellar explosion’s debris field − also called its supernova remnant − located in an HII region called DEM L241. An HII (pronounced "H-two") region is created when the radiation from hot, young stars strips away the electrons from neutral hydrogen atoms (HI) to form clouds of ionized hydrogen (HII). This HII region is located in the Large Magellanic Cloud, a small companion galaxy to the Milky Way. A new composite image of DEM L241 contains Chandra data (purple) that outlines the supernova remnant. The remnant remains hot and therefore X-ray bright for thousands of years after the original explosion occurred. Also included in this image are optical data from the Magellanic Cloud Emission Line Survey (MCELS) taken from ground-based telescopes in Chile (yellow and cyan), which trace the HII emission produced by DEM L241. Additional optical data from the Digitized Sky Survey (white) are also included, showing stars in the field. R. Davies, K. Elliott, and J. Meaburn, whose last initials were combined to give the object the first half of its name, first mapped DEM L241 in 1976. The recent data from Chandra revealed the presence of a point-like X-ray source at the same location as a young massive star within DEM L241’s supernova remnant. Astronomers can look at the details of the Chandra data to glean important clues about the nature of X-ray sources. For example, how bright the X-rays are, how they change over time, and how they are distributed across the range of energy that Chandra observes. In this case, the data suggest that the point-like source is one component of a binary star system. In such a celestial pair, either a neutron star or black hole (formed when the star went supernova) is in orbit with a star much larger than our Sun. As they orbit one another, the dense neutron star or black hole pulls material away its companion star through the wind of particles that flows away from its surface. If this result is confirmed, DEM L241 would be only the third binary containing both a massive star and a neutron star or black hole ever found in the aftermath of a supernova. Chandra’s X-ray data also show that the inside of the supernova remnant is enriched in oxygen, neon and magnesium. This enrichment and the presence of the massive star imply that the star that exploded had a mass greater than 25 times, to perhaps up to 40 times, that of the Sun. Optical observations with the South African Astronomical Observatory's 1.9-meter telescope show the velocity of the massive star is changing and that it orbits around the neutron star or black hole with a period of tens of days. A detailed measurement of the velocity variation of the massive companion star should provide a definitive test of whether or not the binary contains a black hole. Indirect evidence already exists that other supernova remnants were formed by the collapse of a star to form a black hole. However, if the collapsed star in DEM L241 turns out to be a black hole, it would provide the strongest evidence yet for such a catastrophic event. What does the future hold for this system? If the latest thinking is correct, the surviving massive star will be destroyed in a supernova explosion some millions of years from now. When it does, it may form a binary system containing two neutron stars or a neutron star and a black hole, or even a system with two black holes. A paper describing these results is available online and was published in the November 10, 2012 issue of The Astrophysical Journal (http://arxiv.org/abs/1208.1453). The authors are Fred Seward of the Harvard-Smithsonian Center for Astrophysics in Cambridge, MA; P. Charles from University of Southampton, UK; D. Foster from the South African Astronomical Observatory in Cape Town, South Africa; J. Dickel and P. Romero from University of New Mexico in Albuquerque, NM; Z. Edwards, M. Perry and R. Williams from Columbus State University in Columbus, GA. NASA's Marshall Space Flight Center in Huntsville, Ala., manages the Chandra program for NASA's Science Mission Directorate in Washington. The Smithsonian Astrophysical Observatory in Cambridge, Mass., controls Chandra's science and flight operations. Larger image, 2.24 MB: http://www.nasa.gov/sites/default/files/styles/1600x1200_autoletterbox/public/deml241.jpg - courtesy of NASA; image credit: X-ray: NASA/CXC/SAO/F. Seward et al; Optical: NOAO/CTIO/MCELS, DSS

Degree View of Galaxy to Our Fingertips

[image-36]Touring the Milky Way now is as easy as clicking a button with NASA's new zoomable, 360-degree mosaic presented Thursday at the TEDActive …

10 surprises about our solar system

Here are 10 unexpected and intriguing facts about our solar system – our sun and its family of planets – you probably did not know!<p>Remember those …

17 Successful Entrepreneurs Share Their Best Productivity Hacks

We asked entrepreneurs across industries to share their favorite productivity hacks, from useful organization apps to clever tricks for cutting down meeting times.<p>These simple habits have proven to enhance their focus, organization, and happiness, all of which fuel their success.

Productivity

Yves Morieux: As work gets more complex, 6 rules to simplify

Find Life Passion and Get Relationship Help

Can you think of the last time you initiated conversation at a party or asked an acquaintance to go out for coffee? If you can’t, it might be time to …

How to Build an Audience with Story (From America's Greatest Living Playwright) - Copyblogger

There’s been a fevered interest in the art of storytelling among the business crowd the last few years.<p>The masters and the hacks alike are thumping …

How to Write Interesting Content for a "Boring" Topic - Copyblogger

If you’re lamenting how “boring” the niche you’re writing in is, take heart … I’m here to tell that you <i>can</i> make it interesting to the right …

How to Turn Bland Text into Sparkling Online Content - Copyblogger

Let me guess …<p>You’re smart. You know your stuff. And you have a sparkle in your eyes when you talk about your favorite subject.<p>But your writing …

History Preserved: Guarneri, Amati & Stradivarius Violins

Written by Liz Lambson<br>Published: <b>February 18, 2014</b> at 5:13 PM [UTC]<p><b>The Sau-Wing Lam Collection of Rare Italian Stringed Instruments</b><p>This weekend I had …

Piano

Ripples in space-time revealed - CNN Video

In A Time Of Crisis, Ukrainians Abroad Unite

The United States is 5,700 miles away from Ukraine, but for the thousands of Ukrainians in America the old country feels closer than ever. With this past winter’s Maidan revolution and Russian president Vladimir Putin now threatening Ukraine’s sovereignty, Ukrainians abroad are taking steps to help …