| Main Board • cheap retro jordans Store - CheapJordansStock |
| 02.03.2017, 09:41 - nieeshoes - Rank 6 - 1073 Posts
Ancient volcanoes destroyed ozone Eruptions gave off gas that eroded the protective atmospheric layer By Alexandra Witze , 15:42 PM June 12, 2012 SELFOSS, cheap jordans online , Iceland — Geoscientists have exposed another assault on Earth’s protective ozone layer — not by manufactured chemicals, cheap wholesale jordans , but by gas ejected in the blasts of huge volcanic eruptions. A new study shows that volcanic rocks in Nicaragua contain bromine, cheap retro jordans , an element known for speeding ozone’s destruction in the upper atmosphere. When magma erupted to form those rocks, cheap Authentic jordans , scientists say, it also released huge amounts of bromine into the air — enough to destroy large parts of the ozone layer f... Source URL: Mars’ misshapen moons, Phobos and Deimos, might be all that’s left of a larger family that a...mpact with the Red Planet?billions of years ago, researchers report online July 4 in Nature Geoscience, http://cheapjordansstock.com . The origin of the two moons has never been clear; they could be captured asteroids or homegrown satellites. But their orbits are hard to explain if they were snagged during a flyby, and previous calculations have had trouble reproducing locally sourced satellites. The new study finds that a ring of rocks blown off of the planet by a collision with an asteroid could have been a breeding ground for a set of larger satellites relatively close to the planet. Those moons, long since reclaimed by Mars, cheap jordans free shipping , could have herded remaining debris in the sparsely populated outer part of the ring to form Phobos and Deimos. Pascal Rosenblatt, a planetary scientist at the Royal Observatory of Belgium in Brussels, cheap jordans , and colleagues ran computer simulations to show how the helper moons formed, did their duty and then fell to Mars, leaving behind a pair of moons similar to Phobos and Deimos. The rain of moons is not over. While Deimos is in a stable orbit, Phobos is developing stress fractures as it slowly inches toward the Red Planet (SN: 12/12/15, p. 11), cheap jordans for sale . http://al-inshad.com/v...re-Cheapjordansstock-c-om http://www.regards-publicite.com/ http://users.atw.hu/sj...rum_topic&topic=33722 |