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Origin of Matter
According to UCLA newsroom,UCLA physicists
have come up with a solution to the puzzle of the origin of matter in the universe. "Most of the laws of nature treat particles and antiparticles equally, but stars and planets are made of particles, or matter, and not antiparticles, or antimatter. That asymmetry, which favors matter to a very small degree, has puzzled scientists for many years."
Now the new research by a group of physicists at UCLA is proposing a solution to this mystery. They have suggested that the asymmetry could be a result of the Higgs boson particle, discovered at LHC in 2012. They write, "the asymmetry may have been produced as a result of the motion of the Higgs field, which is associated with the Higgs boson, and which could have made the masses of particles and antiparticles in the universe temporarily unequal, allowing for a small excess of matter particles over antiparticles."
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Did you know there is a planet between Mars and Jupiter?! A dwarf planet that is. The dwarf planet called Ceres was discovered in 1801 and was first called a planet. Later, it was thought of as an asteroid and now it's categorized as a dwarf planet.
Of the 5 dwarf planets recognized by NASA and IAU, Ceres will be the first one to be visited from Earth. On March 6, 2015, Dawn spacecraft will arrive at Ceres.
"Dawn will not only be the first spacecraft to reach a dwarf planet in the main asteroid belt between Mars and Jupiter, it will be the first spacecraft ever to orbit two different worlds in deep space. Dawn was the first spacecraft to orbit a body in the main asteroid belt when it explored the giant asteroid Vesta from 2011 to 2012."
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In the field of robotics, one of the biggest challenges has been to imitate the natural dexterity of humans, in this case, the dexterity of a good surgeon's hands. However, being human, even the best surgeons are subject to fatigue and eventual tremors of a full day which makes their job very challenging especially when operating on small children
To find a solution, Toronto's SickKids Centre for Image-Guided Innovation & Therapeutic Intervention in partnership with MacDonald, Dettwiler and Associates Ltd. have applied the technology behind Canadarm, Canadarm2 and Dextre to develop KidsArm.
"The third prototype of KidsArm, the first image-guided robotic surgical arm in the world specifically designed for pediatric surgery, is currently being tested at SickKids Hospital, and researchers are hoping that the technology might soon lend a helping hand to surgeons around the country."
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