Almost a billion years ago a meteorite, which travelled at 40,000 mph, more than half a mile wide, hit earth with a force of 145 billion tonnes of TNT. Now, the evidence of its scattered debris has been found 25 miles off the coast of northwest Scotland. As per the scientists, the meteor's force was 940 million times greater than the Hiroshima nuclear bomb. In 2008, scientists first raised this possibility of discovering the evidence of that huge meteor's debris and now a team of researchers from Aberdeen and Oxford said that there is a possibility that any trace had been preserved over the millennia. Dr Ken Amor at Oxford University said that "The material excavated during a giant meteorite impact is rarely preserved on earth, because it is rapidly eroded, so this is a really exciting discovery." As per the researchers, the three billion tonne meteor smashed down in the Minch basin, somewhere between isles of Lewis and Harris in the Outer Hebrides and Ullapool. "It was purely by … [Read more...] about Evidence of impact crater of largest meteorite found in Scotland
Scientist discover new earth
PARIS: Industries in northeastern China have spewed large quantities of an ozone-depleting gas into the atmosphere in violation of an international treaty, scientists said on Wednesday (May 22).Since 2013, annual emissions from northeastern China of the banned chemical CFC-11 have increased by about 7,000 tonnes, they reported in the peer-reviewed journal Nature."CFCs are the main culprit in depletion of the stratospheric ozone layer, which protects us from the Sun's ultraviolet radiation," said lead author Matt Rigby, an atmospheric chemist at the University of Bristol.Chlorofluorocarbon-11 was widely used in the 1970s and 1980s as a refrigerant and to make foam insulation.The 1987 Montreal Protocol banned CFCs and other industrial aerosols that chemically dissolve protective ozone 10km to 40km above Earth's surface, especially over Antarctica and Australia.Following the ban's entry into force, global concentrations of CFC-11 declined steadily until about 2012.But last year startled … [Read more...] about Illegal ozone-depleting gases traced to China: Study
Since the dawn of humanity, the stars in the night sky have trickled our imagination. The nursery rhymes to children inevitably start with "Twinkle, twinkle little star, how I wonder what you are".These blue supergiants are rock-and-roll celestial bodies which live fast and die young, making it difficult to study them. They were first observed before space telescopes were invented, but our understanding remained limited throughout.Recently, using the NASA Kepler/K2 and TESS space telescopes, a global team led by KU Leuven studied the sounds originating inside these stars and discovered that these blue supergiants shimmer in brightness due mainly to waves on their surface. Though telescopes were in use for over centuries, astronomers have struggled to 'see' what's inside the stars but these new space telescopes allowed astronomers to 'see' the waves that originate in the deep interior of the stars. Using asteroseismology, a similar technique to how seismologists use earthquakes to study … [Read more...] about Twinkle, twinkle little star, now I don’t wonder what you are!