Thursday, 23 June 2016

NASA Scientists Discover Unexpected Mineral on Mars

Scientists have discovered an unexpected mineral in a rock sample at Gale Crater on Mars, a finding that may alter our understanding of how the planet evolved.
NASA's Mars Science Laboratory rover, Curiosity, has been exploring sedimentary rocks within Gale Crater since landing in August 2012. In July 2015, on Sol 1060 (the number of Martian days since landing), the rover collected powder drilled from rock at a location named "Buckskin." Analyzing data from an X-ray diffraction instrument on the rover that identifies minerals, scientists detected significant amounts of a silica mineral called tridymite.
This detection was a surprise to the scientists, because tridymite is generally associated with silicic volcanism, which is known on Earth but was not thought to be important or even present on Mars.
The discovery of tridymite might induce scientists to rethink the volcanic history of Mars, suggesting that the planet once had explosive volcanoes that led to the presence of the mineral.
Scientists in the Astromaterials Research and Exploration Science (ARES) Division at NASA's Johnson Space Center in Houston led the study. A paper on the team's findings has been published in the Proceedings of the National Academy of Sciences.
"On Earth, tridymite is formed at high temperatures in an explosive process called silicic volcanism. Mount St. Helens, the active volcano in Washington State, and the Satsuma-Iwojima volcano in Japan are examples of such volcanoes. The combination of high silica content and extremely high temperatures in the volcanoes creates tridymite," said Richard Morris, NASA planetary scientist at Johnson and lead author of the paper. "The tridymite was incorporated into 'Lake Gale' mudstone at Buckskin as sediment from erosion of silicic volcanic rocks."
The paper also will stimulate scientists to re-examine the way tridymite forms. The authors examined terrestrial evidence that tridymite could form at low temperatures from geologically reasonable processes and not imply silicic volcanism. They found none. Researchers will need to look for ways that it could form at lower temperatures.
"I always tell fellow planetary scientists to expect the unexpected on Mars," said Doug Ming, ARES chief scientist at Johnson and co-author of the paper. "The discovery of tridymite was completely unexpected. This discovery now begs the question of whether Mars experienced a much more violent and explosive volcanic history during the early evolution of the planet than previously thought."

View the original article here

India lightning strikes leave 93 people dead

At least 93 people have been killed and more than 20 injured by lightning strikes in the Indian states of Bihar, Jharkhand, Uttar Pradesh and Madhya Pradesh, officials say.
Most of the people who died were working on farms during torrential rains on Tuesday, reports said.
Lightning strikes are common in India during heavy monsoon rains.
Fifty-six people died in Bihar while 37 people were killed across Uttar Pradesh, Jharkand and Madhya Pradesh.

View the original article here


Surya hana academy is leading sap hana institute for sap courses in India.

View the original article here

Saturday, 28 May 2016

Stig Broeckx taken to hospital after crash involving motorbike at Tour of Belgium

A Belgian cyclist was taken to hospital with suspected head injuries during the Tour of Belgium involving a motorbike along with up to 11 others.

Stig Broeckx, the 26-year old professional who rides for Lottosoudal, was involved in the crash on the third phase of the race on Saturday, his team supported.

In accordance with Belgian sports web site Sporza, 19 passengers were caught up in the event, with a dozen anguish serious injuries that were enough to justify transferral.

Frederik Frison, Tony Hurel, Pieter Jacobs, Loic Chetout, Broeckx and Jesper Asselnan were allegedly associated with the crash. The race was neutralised meaning – could not be attacked by any passengers before organisers determined to stop event early.

It's the second time this year that Broeckx continues to be involved with the most recent in a number of crashes, and a crash with a motorbike to include scooters and motos .

Meanwhile, an enormous crash was caused by a motorbike that was stalled in the peloton only after the start of Red Hook Criterium in Nyc in May.

The tide of events including motorbikes, which are used to help television broadcasters cover races reside, has caused many cyclists calling for a review in their use.

Tony Martin, the world champion time trialist who rides for Etixx Quickstep, tweeted after the crash on Saturday: “What we want NOW is riders, race organisers and a round table with UCI determine one safety standard for EVERY race and to drive changes!”

The UCI, the international cycling body, afterwards affirmed they'd review Tour of Belgium crash, to ensure lately introduced rules regulating moto uses were “ ” that was honored.

View the original article here