The sky is full of Perseids

This video is a compilation of Perseid meteors seen by the NASA All Sky Fireball Network on the night of August 12-13, 2014. Even if you missed the peak show last night there is still time, just head out when it gets dark and enjoy. The rates are sharply reduced this year because of the glare from the waning supermoon but it is still a significant shower.The Perseids are a prolific meteor shower associated with the comet Swift–Tuttle. The name derives in part from the word Perseides, a term found in Greek mythology referring to the sons of Perseus.The shower is visible from mid-July each year, with the peak in activity between August 9 and 14, depending on the particular location of the stream. During the peak, the rate of meteors reaches 60 or… »

Source: Solar News

Active volcanoes in the world: August 6 - August 12, 2014

New activity/unrest was observed at 10 volcanoes from August 6 – August 12, 2014. Ongoing activity was reported for 16 volcanoes.New activity/unrest: Ambang, Sulawesi (Indonesia) | Bagana, Bougainville (Papua New Guinea) | Dieng Volcanic Complex, Central Java (Indonesia) | Etna, Sicily (Italy) | Ijen, Eastern Java (Indonesia) | Kelut, Eastern Java (Indonesia) | Sabancaya, Peru | Slamet, Central Java (Indonesia) | Soputan, Sulawesi (Indonesia) | Stromboli, Aeolian Islands (Italy)Ongoing activity: Aira, Kyushu (Japan) | Dukono, Halmahera (Indonesia) | Fuego, Guatemala | Kilauea, Hawaiian Islands (USA) | Kuchinoerabujima, … »

Source: Solar News

Colliding atmospheres - Mars vs Comet Siding Spring

It’s a known fact that planets have atmospheres, but the same can’t be said for comets. The atmosphere of a comet, called its “coma,” is made of gas and dust that spew out of the sun-warmed nucleus and it’s typically wider than Jupiter.Latest ScienceCast video examines what might happen if the atmosphere of Comet Siding Spring hits the atmosphere of Mars on October 19, 2014, when the comet flybys just 132 000 km away from the surface of Mars. One of the things scientists hope for is that this interaction will lead to some remarkable effects including Martian auroras.Video courtesy of Science @ NASA… »

Source: Solar News

Pharmaceuticals and other chemicals widespread in water passing through landfill waste

Pharmaceuticals, personal-care products, and other contaminants are widespread in water that has passed through landfill waste. The samples of this liquid, also known as leachate, were collected from within each of the studied landfills. This study by the U.S. Geological Survey is the first national assessment of these chemicals of emerging concern in landfill leachate in the United States.USGS scientists collected leachate from 19 active landfills and analyzed it for 202 chemicals across a wide range of uses, including pharmaceuticals, hygiene products, home-use chemicals, pesticides, plastics, etc. Of those 202 chemicals, 129 were found.“This represents the first step in USGS efforts to quantify the contribution of contaminants of emerging concern in leachate from active landf… »

Source: Solar News