A seismic swarm with magnitudes up to 3.5 has been occurring in the Wrangell Arc about 40 km NE of Mt. Churchill volcano during the past few days. The intensity and frequency of the quakes has calmed down yesterday. While some few of the quakes are near the volcano, most are not, and the swarm is probably not linked to the volcanic system of Mt Churchill volcano. Churchill is the fourth tallest volcano in the U.S. and has erupted in more than 1,300 years. -VD
They came from outer space--and you can have one! Genuine meteorites are now on sale in the Space Weather Store.
THE FIRST INTERPLANETARY PHOTOBOMB: On Friday, July 19th, the Cassini spacecraft will photograph Earth through the rings of Saturn--and NASA wants you to jump into the shot. Get the full story from Science@NASA.
View west up the Drift River valley toward Mt Redoubt, Alaska. The entire sector east of the volcano is blanketed in ash deposits. March 31, 2009: Image by Game McGimsey, Alaska Volcano Observatory & U.S. Geological Survey
What are the prospects for northern summer meteor season this year? The best warm-weather weeks for watching meteors in the Northern Hemisphere always begin around now. The season peaks from late July to about mid-August. But, right now, the moon is waxing toward full. The July 2013 full moon – on July 22 – will be another supermoon, and it’ll drown the beginning of the 2013 summer meteor season in its glare. Meteor aficianados will be waiting for the days after full moon, when the moon will be waning and casting less light in the sky. The best time for watching summer meteors in 2013 will probably begin around the first week of August.
July 17, 2013 – QUITO, Ecuador (AP) — Scientists say lava flow and ash and gas emissions have intensified at a second Ecuadorean volcano, Reventador, as the full-bore eruption of the Tungurahua cone continues. Ecuador’s Geophysics Institute says the lava flow on Reventador’s southern flank has increased since Saturday but poses no immediate threat to villagers in the region 60 miles (100) kilometers) east of the capital, Quito. The 11,400-foot (3,475-meter) volcano is nearly three times that distance from Tungurahua to the southwest. It has been roaring since Sunday, when 200 people were evacuated from its flanks and one pyroclastic blast was heard as far away as the coastal city of Guayaquil. Tungurahua is 16,480 feet (5,023 meters) high and has been active since 1999. Reventador had its last big eruption in November 2002
July 17, 2013: A female inmate hand crew from Puerta La Cruz and firefighters in an engine company with them set fire to reinforce the line to stave off part of the Mountain Fire burning up a hill toward them off Apple Canyon Road near Lake Hemet, Calif. Officials say the wildfire in the mountains west of Palm Springs has destroyed three houses and three mobile homes and is threatening dozens more residences. (AP Photo/The Desert Sun, Crystal Chatham)
DYLLWILD, Calif. – A Southern California wildfire that forced 6,000 people to flee was more than 35 square miles in size Thursday as fingers of flame swept along mountain ridges above Palm Springs, authorities said.
The fire, which has destroyed at least six houses and mobile homes, gained thousands of acres and was only 15 percent contained Thursday morning, U.S. Forest Service spokeswoman Norma Bailey said.
Collisions of neutron stars produce powerful gamma-ray bursts – and heavy elements like gold (Image credit: Dana Berry, SkyWorks Digital, Inc.)
Recent research by scientists at the Harvard-Smithsonian Center for Astrophysics (CfA) in Cambridge, Massachusetts has revealed that considerable amounts of gold — along with other heavy elements — are produced during impacts between neutron stars, the super-dense remains of stars originally 1.4 to 9 times the mass of our Sun.
The team’s investigation of a short-duration gamma-ray outburst that occurred in June (GRB 130603B) showed a surprising residual near-infrared glow, possibly from a cloud of material created during the stellar merger. This cloud is thought to contain a considerable amount of freshly-minted heavy elements, including gold.