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Saturday, February 25, 2017

The world's first solar panel-paved road has opened in a town in northern France.

The goal? To power the entire village.
IT MAY be situated in a small French village that doesn’t see that much sun, but the Normandy town of Tourouvre has opened the world’s first solar roadway, bringing the hugely popular idea into reality.
The notion of paving roadways with solar panels to meet our energy needs is very appealing, but for the longest time, it has remained largely a theoretical one.
The newly launched French roadway is just one kilometer long but that works out to be 2800 square meters of photovoltaic cells — enough, theoretically, to power the village’s street lights.
The resin-coated solar panels were hooked up to the local power grid just in time for Christmas as France’s Environment Minister Segolene Royal looked on last week.
“This new use of solar energy takes advantage of large swathes of road infrastructure already in use ... to produce electricity without taking up new real estate,” she said in a statement.
The one-kilometer road is set to pave the way for to construction of much bigger solar highways in the future.
The minister announced a four-year “plan for the national deployment of solar highways” with initial projects in western Brittany and southern Marseille.
The idea, which is also under exploration in Germany, the Netherlands and the United States, is that roadways are occupied by cars only around 20 percent of the time, providing vast expanses of the surface to soak up the sun’s rays.
The simple idea bestowed a secondary — and equally important — purpose for roads by allowing them to double as an energy source.
But critics are still waiting to see how practical and cost-effective solar roads can be.

Incredible similarities!


Thursday, February 23, 2017

Astronomers have found at least seven Earth-sized planets orbiting the same star 40 light-years away.

The NASA Announcement


This discovery outside of our solar system is rare because the planets have the winning combination of being similar in size to Earth and being all temperate, meaning they could have water on their surfaces and potentially support life.
This is the first time that so many planets of this kind are found around the same star.
The seven exoplanets were all found in tight formation around an ultracool dwarf star called TRAPPIST-1. Estimates of their mass also indicate that they are rocky planets, rather than being gaseous like Jupiter. Three planets are in the habitable zone of the star, known as TRAPPIST-1e, f and g, and may even have oceans on the surface.
The TRAPPIST-1 star, an ultracool dwarf, has seven Earth-size planets orbiting it.
The researchers believe that TRAPPIST-1f, in particular, is the best candidate for supporting life. It's a bit cooler than Earth but could be suitable for the right atmosphere and enough greenhouse gasses
.
What's next

Over the next decade, the researchers want to define the atmosphere of each planet, as well as to determine whether they truly do have liquid water on the surface and search for signs of life.
Although 40 light-years away doesn't sound too far, it would take us millions of years to reach this star system. But from a research perspective, it's a close opportunity and the best target to search for life beyond our solar system.


ஸ்பிட்செர் மூலம் புதிய கோள்களை நாசா கண்டுபிடித்தது. புதிதாக கண்டுபிடிக்கப்பட்ட 
7 கோள்களில் 3 கோள்கள் மனிதர்கள் வசிப்பதற்கு ஏற்ற இடம் உள்ளதாக நாசா 
தெரிவித்துள்ளது.

பூமியை போலவே உயிர்கள் வாழக்கூடிய வேறு கிரகங்கள் உள்ளனவா என்ற 
ஆராய்ச்சியில் பல நாடுகளும் தொடர்ந்து ஈடுபட்டு வருகின்றன. வேற்றுகிரகத்தில் 
மனிதர்கள் வசிக்கிறார்களா என்பதை அறியும் ஆராய்ச்சியும் நடக்கிறது. இந்நிலையில், 
பூமியில் இருந்து 39 ஒளி ஆண்டுகள் தூரத்தில் 7 கோள்கள் இருப்பதை நாசா 
கண்டுபிடித்துள்ளது. ஸ்பிட்செர் மூலம் புதிய கோள்களை நாசா கண்டுபிடித்தது. 
புதிதாக கண்டுபிடிக்கப்பட்ட 7 கோள்களில் 3 கோள்கள் மனிதர்கள் வசிப்பதற்கு 
ஏற்ற இடம் உள்ளதாக நாசா தெரிவித்துள்ளது.

அங்கு மனிதர்கள் உயிர்வாழ்வதற்கான காற்று, நீர் இருப்பதற்கான வாய்ப்புகள் 
அதிகம் என நாசா விஞ்ஞானிகள் கருதுகின்றனர். மேலும், பூமியை போன்றே 
மேற்பரப்பும் அடர்த்தியும் காணப் படுகிறது. மிகுந்த வெளிச்சத்துடன் உள்ள 
இந்த கிரகங்களை இரவில் வெறும் கண்களாலேயே காண முடியும் என்று 
நாசா விஞ்ஞானிகள் கூறியுள்ளதாக தகவல்கள் தெரிவிக்கின்றன. 3 கோள்களில்
 நீர் ஆதாரம் இருப்பதையும் நாசா விஞ்ஞானிகள் கண்டுபிடித்துள்ளனர்.