Planet Hunting Techniques: Microlensing

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Astronomers can discover a planet not by noticing the planet’s gravitational effects on its parent star but rather on a star much farther away.

When one celestial object passes in front of another from our point of view, the closer object’s gravity can bend and magnify the light of the more distant object, causing the distant object to appear brighter than normal for a short time. This phenomenon is called gravitational microlensing.

For example, if a closer star passes in front of a farther star, the farther star will appear temporarily brighter and then return to its normal brightness after the closer star has passed.

But if, by chance, the closer star is accompanied by an unseen planet, the farther star’s brightness will increase a second time as the planet passes in front of it.

By watching for a distant star’s brightness to intensify twice, astronomers can find out whether the closer star has a secret traveling companion.

عمال النظافة : الشغل مب عيب!

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الشغل مب عيب، حتى لو انك عامل نظافة ياخي وش فيها؟! الان راح تتعلم اساسيات تنظيف المنازل و طريقة استخدام الادوات بالشكل الصحيح، هل تبي تصير عامل نظافة؟ عطنا لايك و بنرسل لك العمال ينظفون بيتك!
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The Fault In Our Stars | Grouplove — Let Me In | Official Music Video

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Pre-order ‘The Fault In Our Stars’ soundtrack and get ‘Let Me In’ instantly! http://smarturl.it/TFIOSST

Directed By: Greg Brunkalla

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Hazel (Shailene Woodley) and Gus (Ansel Elgort) are two extraordinary teenagers who share an acerbic wit, a disdain for the conventional, and a love that sweeps them — and us — on an unforgettable journey. Their relationship is all the more miraculous, given that they met and fell in love at a cancer support group. THE FAULT IN OUR STARS, based upon the number-one bestselling novel by John Green, explores the funny, thrilling and tragic business of being alive and in love.

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The Fault In Our Stars | Grouplove — Let Me In | Official Music Video
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Learning to ‘Kiss’ Mezcal: MUNCHIES Guide to Oaxaca (Part 2)

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In Episode 2, Munchies Guide to Oaxaca explores the complete universe of taste that is mezcal, Oaxaca’s sacred spirit. Host Daniel Hernandez starts out sampling artisanal, hand-crafted mezcales at two cozy tasting bars in Oaxaca City, Mezcaloteca and Los Amantes. Still nursing his buzz, he visits a palenque in nearby Santiago Matatlán, considered the capital region of Oaxaca’s mezcal scene. There, he throws a few maguey “hearts” on the fire, and learns how mezcal is made, from plant to first sip. Remember, always “kiss” your mezcal, don’t shoot it!

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Stanley McChrystal: The military case for sharing knowledge

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When General Stanley McChrystal started fighting al Qaeda in 2003, information and secrets were the lifeblood of his operations. But as the unconventional battle waged on, he began to think that the culture of keeping important information classified was misguided and actually counterproductive. In a short but powerful talk McChrystal makes the case for actively sharing knowledge.

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