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Tag: Satellites

Satellites show warming is accelerating sea level rise

Satellites show warming is accelerating sea level rise

Technology
Melting ice sheets in Greenland and Antarctica are speeding up the already fast pace of sea level rise, new satellite research shows. At the current rate, the world's oceans on average will be at least 2 feet (61 centimeters) higher by the end of the century compared to today, according to researchers who published in Monday's Proceedings of the National Academies of Sciences. Sea level rise is caused by warming of the ocean and melting from glaciers and ice sheets. The research, based on 25 years of satellite data, shows that pace has quickened, mainly from the melting of massive ice sheets. It confirms scientists' computer simulations and is in line with predictions from the United Nations, which releases regular climate change reports. "It's a big deal" because the projected sea level ...

Rocket lights sky as it carries satellites from California

Technology
A reused SpaceX rocket carried 10 satellites into orbit from California on Friday, leaving behind a trail of mystery and wonder as it soared into space. The Falcon 9 booster lifted off from coastal Vandenberg Air Force Base, carrying the latest batch of satellites for Iridium Communications. The launch in the setting sun created a shining, billowing streak that was widely seen throughout Southern California and as far away as Phoenix. Calls came in to TV stations as far afield as San Diego, more than 200 miles south of the launch site. Cars stopped on freeways in Los Angeles so drivers and passengers could take pictures and video. The Los Angeles Fire Department issued an advisory that the "mysterious light in the sky" was from the rocket launch. Jimmy Golen, a sports writer for The Assoc...
SpaceX launches rocket from California, deploys satellites

SpaceX launches rocket from California, deploys satellites

Science
Dec. 22 (UPI) -- SpaceX finished its busy 2017 launch schedule with a final blastoff from California.The aerospace company's Falcon 9 rocket lifted off from California's Vandenberg Air Force Base around 8:30 p.m. ET on Friday.The Falcon 9 rocket ended the year just as SpaceX began the year, delivering a 10-pack of communications satellites into low-Earth orbit for Iridium Communications.SpaceX has helped Iridium amass an impressive constellation of satellites. The company's voice and data relay network is operating across 30 satellites. Soon it will be 40.With SpaceX's continued assistance, Iridium aims to put a total of 75 satellites in space. The company has expanded services for its customers to include video and Internet capabilities alongside its standard offerings of phone, messaging...
US firm picks UK for weather satellites

US firm picks UK for weather satellites

Science
Media playback is unsupported on your deviceA miniaturised instrument to monitor the weather will be the first payload to fly on one of the UK's new publicly funded demonstration satellites. US-based Orbital Micro Systems will launch their microwave radiometer aboard the 30cm-long spacecraft next year to retrieve temperature, humidity and precipitation measurements. If successful, OMS plans a 40-strong constellation of similar satellites. OMS is moving into Britain because of the support offered to new space firms. Originating in Colorado, the company is opening a data-processing centre in Harwell, Oxfordshire, and a hardware facility in Glasgow, Scotland. "The UK's In-Orbit Demonstration programme is unique; it doesn't exist anywhere else," says OMS CEO William Hosack. "The speed with whi...
Satellites spy Antarctic 'upside-down ice canyon'

Satellites spy Antarctic 'upside-down ice canyon'

Science
Scientists have identified a way in which the effects of Antarctic melting can be enhanced. Their new satellite observations of the Dotson Ice Shelf show its losses, far from being even, are actually focused on a long, narrow sector. In places, this has cut an inverted canyon through more than half the thickness of the shelf structure. If the melting continued unabated, it would break Dotson in 40-50 years, not the 200 years currently projected. "That is unlikely to happen because the ice will respond in some way to the imbalance," said Noel Gourmelen, from the University of Edinburgh, UK. "It's possible the area of thinning could widen or the flow of ice could change. Both would affect the rate at which the channel forms. "But the important point here is that Dotson is not a flat slab and...