Science

How planet-forming dust and gases in Orion Nebula are blasted off

How planet-forming dust and gases in Orion Nebula are blasted offWashington, Mar 11 : Astronomers have revealed how planets in the Orion Nebula are blasted before they even form.

The Orion Nebula is home to hundreds of young stars and even younger protostars known as proplyds.

Many of these nascent systems will go on to develop planets, while others will have their planet-forming dust and gas blasted away by the fierce ultraviolet radiation emitted by massive O-type stars that lurk nearby.

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How nature favoured the Mongols in their conquests

How nature favoured the Mongols in their conquestsWashington, Mar 11 : By studying the rings of ancient trees in mountainous central Mongolia, researchers think they may have unraveled the mystery of how small bands of nomadic Mongol horsemen united to conquer much of the world within a span of decades, 800 years ago.

The rise of the great leader Genghis Khan and the start of the largest contiguous empire in human history was propelled by a temporary run of nice weather.

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International Space Station crew lands safely in Kazakhstan after 166 days

International Space Station crew lands safely in Kazakhstan after 166 daysWashington, Mar 11 : Three crew members from the International Space Station returned to Earth on Monday after 166 days in space.

During their exploration, they made 2,656 orbits around the planet and traveled almost 70.5 million miles.

Expedition 38 crew members Michael Hopkins of NASA, and Oleg Kotov and Sergey Ryazanskiy of the Russian Federal Space Agency (Roscosmos) touched down southeast of the remote town of Dzhezkazgan, Kazakhstan.

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Sensory substitution devices will help blind to 'hear' colors, shapes

Sensory substitution devices will help blind to 'hear' colors, shapesWashington, March 11 : A new study has revealed that blind people will be able to "hear" colors and shapes with the help of sensory substitution devices (SSDs), which will be able to convey the information to the brain non-invasively through other senses.

The researchers at the Center for Human Perception and Cognition are offering blind and visually impaired tools via training with SSDs, to receive environmental visual information and interact with it.

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Mars meteorite could solve mysteries of Red Planet

Mars meteorite could solve mysteries of Red PlanetWashington, March 7 : A piece of rock that found its way from Mars to a desert in northwest Africa may help reveal the history and evolution of Mars.

Researchers pinpoint Mojave Crater, a 55-kilometer-wide-basin on the planet's equator, as the origin of the so-called "shergottites" meteorites, a family that includes about 75 percent of the roughly 150 known Martian meteorites, Discovery News reported.

Knowing where the meteorites came from will help researchers find about the history and evolution of Mars.

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150 mln-year-old dinosaur found in Portugal may be largest land predator from Europe

150 mln-year-old dinosaur found in Portugal may be largest land predator from EuropeWashington, Mar 6 : A new dinosaur species found in Portugal may be the largest land predator discovered in Europe, as well as one of the largest carnivorous dinosaurs from the Jurassic, according to a new study

Scientists discovered bones belonging to this dinosaur north of Lisbon.

They were originally believed to be Torvosaurus tanneri, a dinosaur species from North America.

Closer comparison of the shin bone, upper jawbone, teeth, and partial tail vertebrae suggest to the authors that it may warrant a new species name, Torvosaurus gurneyi.

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How sense of smell is linked with memory and cognition

How sense of smell is linked with memory and cognitionWashington, March 3 : Researchers have demonstrated for the first time a way to monitor inhibitory neurons that link sense of smell with memory and cognition in mice.

Scientists from Cold Spring Harbor Laboratory (CSHL), led by Assistant Professor Stephen Shea, was able to measure the activity of a group of inhibitory neurons that links the odor-sensing area of the brain with brain areas responsible for thought and cognition. This connection provides feedback so that memories and experiences can alter the way smells are interpreted.

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Dogs have same sound centres in brain as humans

Dogs have same sound centres in brain as humansWashington, Feb 21 : A new study has found that dogs have dedicated voice areas in their brains, just as people do.

The findings suggest that voice areas evolved at least 100 million years ago, the age of the last common ancestor of humans and dogs, the researchers say.

Attila Andics of MTA-ELTE Comparative Ethology Research Group in Hungary, said that dogs and humans share a similar social environment, asserting that their findings suggest that they also use similar brain mechanisms to process social information.

He said that this may support the successfulness of vocal communication between the two species.

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Can Venus be swallowed by space weather explosion!

Can Venus be swallowed by space weather explosion!New York, Feb 21 - When you pray to God for giving us life, include the earth's magnetic field too!

Yes. This is the magnetic field that saves us from planet-sized giant explosions that can gobble up the entire human race!

But Venus - a barren, inhospitable planet with an atmosphere so dense that spacecraft landing there are crushed within hours - is not that lucky as it has no magnetic field.

NASA researchers recently discovered a planet-sized space weather explosion on Venus.

Called hot flow anomalies, these can be so large at Venus that they’re bigger than the entire planet and they can happen multiple times a day.

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Oxygen may have first accumulated in Earth's atmosphere 3 bln years ago

Oxygen may have first accumulated in Earth's atmosphere 3 bln years agoWashington, Feb. 20 : A study by a team of researchers has shown that oxygen production by photosynthetic cyanobacteria may have initiated as early as 3 billion years ago.

A general consensus asserts that appreciable oxygen first accumulated in Earth's atmosphere around 2.3 billion years ago during the so-called Great Oxidation Event (GOE).

However, the study has given a nontraditional way of thinking about the earliest accumulation of oxygen in the atmosphere, arguably the most important biological event in Earth history.

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Asteroids pummeling tiny star lying 37,000 light-years from Earth

Asteroids pummeling tiny star lying 37,000 light-years from EarthWashington, Feb 20 : Scientists using CSIRO's Parkes telescope and another telescope in South Africa have found proof that a tiny star, PSR J0738-4042, which lies 37,000 light-years from Earth in the constellation of Puppis, is being pounded by asteroids.

CSIRO astronomer and member of the research team Dr. Ryan Shannon said, said that one of these rocks seems to have had a mass of about a billion tons.

The environment around this star is especially harsh, full of radiation and violent winds of particles.

The star is a special one, a 'pulsar' that emits a beam of radio waves.

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Clouds circling supermassive black holes spotted

Clouds circling supermassive black holes spottedWashington, Feb 20 : Astronomers have reported seeing huge clouds of gas orbiting supermassive black holes at the centers of galaxies.

Once thought to be a relatively uniform, fog-like ring, the accreting matter instead forms clumps dense enough to intermittently dim the intense radiation blazing forth as these enormous objects condense and consume matter.

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NASA's NuSTAR shows how stars explode

NASA's NuSTAR shows how stars explodeWashington, Feb 20 : NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) has unraveled one of the biggest mysteries in astronomy of how stars blow up in supernova explosions.

The high-energy X-ray observatory has created the first map of radioactive material in a supernova remnant. The results, from a remnant named Cassiopeia A (Cas A), reveal how shock waves likely rip massive dying stars apart.

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Giant asteroid measuring three football fields flies past Earth

Giant asteroid measuring three football fields flies past EarthWashington, Feb 18 : A giant asteroid flew past Earth just a year after a huge asteroid slammed into Russia's town of Chelyabinsk last year.

Slooh. com broadcast the passing of the Near-Earth Asteroid 2000 EM26 as the Olympics took place in Sochi, Russia, CNet. com reported.

No life was lost in the February 15, 2013, ordeal, but it did cause injuries and significant property damage in the area.

This latest Earth-bound asteroid, named 2000 EM26 and known as a Potentially Hazardous Asteroid (PHA), is at its closest to Earth.

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Brain's 'sweet spot' for love identified

Brain's 'sweet spot' for love identifiedWashington, Feb 16 : Scientists have identified a region deep inside the brain controls how quickly people make decisions about love.

In this study by UChicago neuroscientist Stephanie Cacioppo, the patient made decisions normally about lust but showed slower reaction times when making decisions about love, in contrast to neurologically typical participants matched on age, gender and ethnicity.

The new data suggest that the posterior insula, which affects sensation and motor control, is implicated in feelings of lust or desire, while the anterior insula has a role in the more abstract representations involved in love.

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