http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- The Tunguska catastrophe in 1908 evidently led to high levels of acid rain. This is the conclusion reached by Russian, Italian and German researchers based on the results of analyses of peat profiles taken from the disaster region. http://www.physorg.com/news135332959.html Space & Earth Tue, 15 Jul 2008 09:29:19 EST news135332959 The year is 1908, and it's just after seven in the morning. A man is sitting on the front porch of a trading post at Vanavara in Siberia. Little does he know, in a few moments, he will be hurled from his chair and the heat will be so intense he will feel as though his shirt is on fire. http://www.physorg.com/news134139090.html Space & Earth Tue, 01 Jul 2008 13:51:30 EST news134139090 (PhysOrg.com) -- On March 2, an asteroid whizzed past the Earth at a distance of just 41,000 miles -- a near miss by cosmic standards (most communications satellites orbit at a distance of about 22,300 miles from Earth). Headlines around the world proclaimed that Earth had dodged a bullet, and many mentioned that if the space rock had hit our planet, it might have packed a punch comparable to the Tunguska impact in 1908 that flattened trees over an 800-square-mile area in Siberia. http://www.physorg.com/news156514374.html Space & Earth Tue, 17 Mar 2009 13:13:20 EST news156514374 Members of the scientific expedition of the Siberian state foundation Tunguska Space Phenomenon have managed to uncover blocks of an extraterrestrial technical device, which crashed down on Earth on June 30th, 1908. In addition, expedition members found the so-called "deer" - the stone, which Tunguska eyewitnesses repeatedly mentioned in their stories. Explorers delivered a 50-kilogram piece of the stone to the city of Krasnoyarsk to be studied and analyzed. http://www.physorg.com/news766.html Space & Earth Tue, 10 Aug 2004 08:55:38 EST news766 The mysterious 1908 Tunguska explosion that leveled 830 square miles of Siberian forest was almost certainly caused by a comet entering the Earth's atmosphere, says new Cornell University research. The conclusion is supported by an unlikely source: the exhaust plume from the NASA space shuttle launched a century later. http://www.physorg.com/news165077281.html Space & Earth Wed, 24 Jun 2009 15:49:00 EST news165077281 An asteroid of a similar size to a rock that exploded above Siberia in 1908 with the force of a thousand atomic bombs whizzed close past Earth on Monday, astronomers said on Tuesday. http://www.physorg.com/news155287963.html Space & Earth Tue, 03 Mar 2009 07:33:05 EST news155287963 During the press conference in Krasnoyarsk, Yuri Lavbin, the head of the last expedition, confirmed that parts of an extraterrestrial device had been discovered. The new expedition, organized by the Siberian Public State Foundation `Tunguska Space Phenomenon` completed its work on the scene of Tunguska meteorite fall on August 9. http://www.physorg.com/news819.html Space & Earth Fri, 13 Aug 2004 02:46:16 EST news819 An asteroid discovered three years ago could be a threat in 2029 when it crosses Earth's orbit, a Russian astronomer said Monday. http://www.physorg.com/news110524396.html Space & Earth Tue, 02 Oct 2007 06:13:16 EST news110524396 The stunning amount of forest devastation at Tunguska, a century ago in Siberia, may have been caused by an asteroid only a fraction as large as previously published estimates, Sandia supercomputer simulations suggest. http://www.physorg.com/news117204371.html Space & Earth Tue, 18 Dec 2007 12:46:11 EST news117204371 A new theory to explain global warming was revealed at a meeting at the University of Leicester (UK) and is being considered for publication in the journal "Science First Hand". The controversial theory has nothing to do with burning fossil fuels and atmospheric carbon dioxide levels. http://www.physorg.com/news11710.html Space & Earth Tue, 14 Mar 2006 02:59:55 EST news11710 What caused the extinction of mammoths and the decline of Stone Age people about 13,000 years ago remains hotly debated. Overhunting by Paleoindians, climate change and disease lead the list of probable causes. But an idea once considered a little out there is now hitting closer to home. http://www.physorg.com/news109872915.html Space & Earth Mon, 24 Sep 2007 17:15:15 EST news109872915 For the past several days the world's largest telescopes have been trained on Jupiter. Not to miss the potentially new science in the unfolding drama 580 million kilometres away, Matt Mountain, director of the Space Telescope Science Institute in Baltimore, Maryland, allocated discretionary time to a team of astronomers led by Heidi Hammel of the Space Science Institute in Boulder, Colorado. http://www.physorg.com/news167721373.html Space & Earth Sat, 25 Jul 2009 09:20:01 EST news167721373 An Asteroid Deflection Research Center (ADRC) has been established on the Iowa State campus to bring researchers from around the world to develop asteroid deflection technologies. The center was signed into effect in April by the Office of the Executive Vice President and Provost. http://www.physorg.com/news131031466.html Space & Earth Mon, 26 May 2008 14:37:46 EST news131031466 Astronomers funded by NASA are monitoring the trajectory of an asteroid named 2007 WD5 that is expected to cross the orbital path of Mars early next year. Calculations by NASA's Near-Earth Object Office at the Jet Propulsion Laboratory indicate that the 164-ft wide asteroid may pass within 30,000 miles of Mars at about 6 a.m. EST on Jan. 30, 2008. http://www.physorg.com/news117434054.html Space & Earth Fri, 21 Dec 2007 04:34:14 EST news117434054 A recently rediscovered 400-meter Near-Earth Asteroid (NEA) is predicted to pass near the Earth on 13 April 2029. The flyby distance is uncertain and an Earth impact cannot yet be ruled out. The odds of impact, presently around 1 in 300, are unusual enough to merit special monitoring by astronomers, but should not be of public concern. These odds are likely to change on a day-to-day basis as new data are received. In all likelihood, the possibility of impact will eventually be eliminated as the asteroid continues to be tracked by astronomers around the world. http://www.physorg.com/news2505.html Space & Earth Fri, 24 Dec 2004 04:47:35 EST news2505