A new calculate of potentially dangerous asteroids

Comments approved out by the Wide Field Infrared Explorer to Survey (Wide-field Infrared Survey Explorer, or WISE, for its acronym), NASA, have yielded the best on record count Today the population of potentially hazardous asteroids in our solar system. Also known as "PHAs" (acronym for Potentially Hazardous English Asteroids), these asteroids have orbits within about eight million kilometers (five million miles) from Earth's orbit and are large enough to survive passing through the Earth's atmosphere and cause damage on a regional,

The history of the solar storm

A geomagnetic storm turn off the electricity grid in most of Quebec,in march 1989.At that time,  millions of Canadians was leaving without power for hours.In March 1989,The NASA reports,in January 1994 the communications satellite 290 million Anik E2   Canada, was shat down by a solar storm, and took six  months and $ 50-70 million put back into operation.One of the most dangerous contributors to solar storms is a coronal mass ejection (CME), a great cloud of charged particles belched from the sun and sailing through space at supersonic speeds.