Astronomers Figured Out How to Weigh Entire Planets Using Starlight
Weighing
a planet is a tough task. I mean, it's not like you can just put them
on a bathroom scale. And, while astronomers figured out how to measure
the mass of planets in our solar system a long time ago, it's
practically impossible to weigh
exoplanets. Well, it was until recently.
MIT planetary scientists Julien de Wit and Sara Seager just devised a method that
enables them to weigh an exoplanet by measuring the starlight that
shines through its atmosphere. It's so simple, it's genius. See, when an
exoplanet passes in front of its star, it causes a blip in the amount
of light that shines toward Earth. This is actually how we're able to discover exoplanets in the first place.
Not
all of the starlight zooms past the exoplanet, though. Some is actually
filtered through the atmosphere, and by measuring the spectrum of that
light, the MIT scientists are able to learn all
kinds of things about the planet, such as atmospheric pressure,
temperature, and gravitational pull. With that information, they've come
up with a new method for calculating not just atmospheric chemistry but
a planet's weight and mass.
So
why does this matter? Well, it's always been really difficult to learn
details about exoplanets. They're really far away! With this tried and true starlight method,
though, astronomers can now also deduce whether the planet is gassy
like Venus or rocky like Earth. It also makes it easier to discover new
exoplanets which—let's cut to the chase—brings us that much closer to finding an Earth twin
EcoFriendly Computer Mouse
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Cikgu Kana
at
08:30
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Internal circuit board with electronic components is of a minimum possible size and is covered mask.
Not only is the design unique but the electronic filling as well. AlestRukov mice control sound volume of any computer (РС, МАС) without additional buttons and installation of drivers or software.
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The development of manufacturing techniques took 4 years. As a result, we are able to manufacture high-tech mice with exclusive design, as if handcrafted by cabinet-maker.
Extreme and Craziest Things in Nature You Won't Believe Existed...
Posted by
PKKBA.blogspot.com/
at
08:12
Giant Clouds over Beijing
Light Pillars over Moscow
Underground Natural Springs in Mexico
Underwater Forest of Lake Kaindy
Blood Falls in Antarctica
Spiderweb Cocooned Trees in Pakistan
Shimmering Shores of Vaadhoo, Maldives
Reflective Salt Flats in Bolivia
Rainbow Eucalyptus Tree in Kailua Hawaii
Nature Salt Water Fountain off the Coast of Oregon
Lake Hillier Australia
Giant Crystal Cave in Nacia Mexico
Beautiful Sandstone Formation in Arizona
Rainbows of the Natural World
China’s
rainbow mountains
Imagine a world where the
mountains are striped with candy colours and people are dwarfed by the
landscape’s immensity. Such a place exists in China’s
northwestern Gansu Province, where 24 million years of
vibrant stone and mineral deposits have created rainbow-striped
mountains.
The tinted peaks were
fashioned by uplift from the Earth’s tectonic plates – the same ones that formed
parts of the Himalayan range – while rain, wind and erosion shaped them into the
jagged world seen today. Located around the city of Zhangye, the area covers
more than 10sqkm and the vista is most dazzling after a rainfall, when the
colours glow even brighter than usual. (Melinda
Chan/Getty)
Oregon’s
painted hills
With the hipster
amenities of Portland to the west and the national wonder of Crater Lake to the south, eastern Oregon’s John Day Fossil Beds often get overlooked. This 14,000 acre
national park is a natural museum of geological eras, though it is the Painted
Hills region that offers the most dramatic view. The spectacular landscape was
shaped by numerous volcanic eruptions and extreme climate change around 35
million years ago. As time wore on, the lush vegetative climate turned more
arid. Ash, clay, minerals and decaying plant matter all mixed into the soil,
leaving pronounced streaks of gold, black, red – even purple and blue. The
colours change according to the air’s moisture level, and are said to be most
vivid come late afternoon. (Purestock/Getty)
Ethiopia’s alien crater
In the language of the Afar people, Dallol means disintegrated. So it
makes sense that Ethiopia’sDallol Volcano is less a volcano than a sunken crater. Caused
by
groundwater and magma colliding, sulphur, iron oxide, salt and other
minerals have created the vivid greens and neon yellows that form one of the
most remote, untouched and ethereal natural rainbows in the
world.
Dallol lies near the border of Eritrea in an area that was closed to
foreigners until 2001. Even today it is prudent to travel with an armed guard,
as border tensions persist and kidnappings have been known to happen. Because of
this, only a few hundred visitors make it to this remarkable landscape every
year – which is probably for the best considering the fragility of the landform,
the toxic gases and the temperatures that average above 30C. (Thierry
Hennet/Getty)
Wyoming’s ultimate spring
Yellowstone’s Grand Prismatic, named for its
brilliant colouration, is the largest hot spring in the US – its 370ft diameter
put into perspective by the paved walkway visible near the photo’s top. The
colour spectrum that ranges from deep blue to burnt red is the product of
trillions of thermophiles, or bacterial microorganisms, which flourish in hot
waters. Different temperatures determine the hue, and the centre’s blue is the
result of extreme heat that leaves the bacteria sterile. Grand Prismatic is one
of many coloured springs in Yellowstone and draws millions of visitors every
year. (Werner Van Steen/Getty)
Light up the night in Iceland
The Aurora Borealis appears in a complete spectrum of colours, from
light pinks, reds and greens to the yellows, blues and violets seen here on
Iceland’s Reykjanes Peninsula. The beams that dance against the night’s sky are
the result of particles colliding, sometimes resulting in streams, ripples or
arcs across the horizon. Despite a host of science to explain how exactly these
lights come to fruition, there is an alien energy to the glow that makes this a
mystery often better left unexplained.
World’s Strangest Buildings
Posted by
PKKBA.blogspot.com/
at
08:14
1. Mind House (Barcelona, Spain)
Montreal Biosphere (Canada)
Cubic Houses (Kubus woningen) (Rotterdam, Netherlands)
House Attack (Vienna, Austria)
National Theatre (Beijing, China)
The National Library (Minsk, Belarus)
Habitat 67 (Montreal, Canada)
Rotating Tower, Dubai, UAE
Kansas City Library (Missouri, USA)
Museum of Contemporary Art (Niteroi, Rio de Janeiro, Brazil)
Atomium (Brussels, Belgium)
GLOWING MUSHROOMS
Glowing Mushrooms Photographed in Quirk of Fate
Bioluminescent "Jill o' Lanterns" (Omphalotus subilludens) in Mt. Dora, Fla. Credit: Taylor Lockwood. |
After taking my camera and passion for bioluminescent mushrooms around the world, I was pleased to find some "glowers" in my little town of Mount Dora, Fla. I had only seen them once before, so an uncommon bloom of these "Jill o' Lanterns" (Omphalotus subilludens) got me right into gear.
If you're a topical expert — researcher, business leader, author or innovator — and would like to contribute an op-ed piece, email us here.
This time I was ready with a plan.
I've been waiting and looking for them for months, and as soon as I found some, I drove to Orlando (the nearest big city) and rented a Canon EOS 6D camera, top-rated for its low-light capabilities. The result was that I got some good photos from a very difficult-to-photograph Spirits of the Forest mushroom. And then two days later, as fate would have it, I found another kind of rarely captured bioluminescent mushroom — two different species within the four days of my rental period. These might be the only two that glow and grow on my home turf.
This second set was Panellus pusillus, a tropical mushroom found occasionally in Florida. Both are featured in the new video Spirits of the Forest.
http://www.livescience.com/41637-glow-in-the-dark-mushrooms-snapped-by-photographer-video.html
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