New NASA Research Shows Giant Asteroids Battered Early Earth

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An artistic conception of the early Earth, showing a surface pummeled by large impact, resulting in extrusion of deep seated magma onto the surface. At the same time, distal portion of the surface could have retained liquid water.
Image Credit: Simone Marchi

New research shows that more than four billion years ago the surface of Earth was heavily reprocessed – or melted, mixed, and buried – as a result of giant asteroid impacts. A new terrestrial bombardment model, calibrated using existing lunar and terrestrial data, sheds light on the role asteroid collisions played in the evolution of the uppermost layers of the early Earth during the geologic eon called the “Hadean” (approximately 4 to 4.5 billion years ago.

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Next-Generation Microshutter Array Technology

microshutter closeup

 

NASA technologists have hurdled a number of significant challenges in their quest to improve a revolutionary observing technology originally created for the James Webb Space Telescope. This image shows a close-up view of the next-generation microshutter arrays — designed to accommodate the needs of future observatories — during the fabrication process.

Determined to make the Webb telescope’s microshutter technology more broadly available, a team of technologists at NASA’s Goddard Space Flight Center spent the past four years experimenting with techniques to advance this capability. One of the first things the team did was eliminate the magnet that sweeps over the shutter arrays to activate them, replacing it with electrostatic actuation. Just as significant is the voltage needed to actuate the arrays. By last year, the team had achieved a major milestone by activating the shutters with just 30 volts. The team used atomic layer deposition, a state-of-the-art fabrication technology, to fully insulate the tiny space between the electrodes to eliminate potential electrical crosstalk that could interfere with the arrays’ operation. They also applied a very thin anti-stiction coating to prevent the shutters from sticking when opened.

> Revolutionary Microshutter Technology Hurdles Significant Challenges

Image Credit: NASA/Bill Hrybyk

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Henri Lloyd welcomes their victorious Clipper Race Yacht Henri Lloyd 50 Years of Pioneering Spirit to the Solent

Henri Lloyd - 50 Years of Pioneering Spirit by Tower Bridge LR

Fresh from her epic Clipper 2013-14 Round the World Yacht Race, Henri Lloyd 50 years of Pioneering Spirit will be sailing in Cowes next week. The black and gold livery of the winning yacht will be seen in the Solent from Tuesday 5th to Friday 8th August hosting guests of Henri Lloyd for a rather more gentle sailing experience than her recent 40,000 mile voyage across the world’s oceans.

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Change to Albion open days

Albion 13

13th August 2014 10am to 4pm The Norfolk Wherry Albion will be moored on the riverside off Wherry Road, Norwich nr Carrow Bridge and opposite Norwich City Football Ground, together with the Thames Sailing Barge ‘Cambria’. They will both be moored opposite Reads Mill, now modern apartments, where, in their working past, they both loaded and unloaded cargo. Both craft will be open to the public free of charge. This is a unique opportunity to see two of the original historic sailing barges that were frequent visitors to Norwich when the city was a busy port.

4th September 2014 10am to 4pm. The Norfolk Wherry Albion will be moored on the river by The Reedcutter, Cantley, in company with the Humber Keel ‘Daybreak’which has just been named as the National Historic Ship of the Year 2014, and is on a tour of the ports of the East Coast. This is a unique opportunity to see two of the original historic sailing barges that served the East Coast with cargo from across the region. Both craft will be open to the public free of charge.

Contact: Henry Gowman publicity@wherryalbion.com tel: 01508 495500 mob:07906 701 891

For more: www.wherryalbion.com www.nationalhistoricships.org.uk

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U.S. sanctions Putin’s shipbuilder and its bank

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Bollinger Fourchon marks safety milestone

July 30, 2014—Bollinger Shipyards, Inc. reports that its Bollinger Fourchon, L.L.C. facility has worked thirteen years without a lost time accident. In April 2014, Bollinger was awarded the 2013 “Award for Excellence in Safety” by the Shipbuilders Council of America for the ninth consecutive year. In May 2014, Bollinger announced the Bollinger Fourchon North expansion, a 50 acre complex strategically located in the middle of the nation’s busiest oil & gas support hub.

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UK WORKERS SPENDING HOLIDAYS ON THE JOB

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– Total of 3.2 million days of holidays spent working –

– Almost half of all workers spend holiday time on work activities –

– 1 in 4 worker’s holiday choice dependent on being accessible to work –

 

UK workers will spend a total of 3,171,550 days of their holidays on work activities, according to new research1 from Kwik Fit Mobile, the UK’s leading mobile tyre fitting service.

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Airport baggage chaos sparks fears over increase in injuries from heavy hand luggage

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The busiest weekend of the year for holidaymakers is almost upon us, with over 2 million passengers expected to travel through the airports across the UK. With recent news that passengers at Gatwick airport may face flying without luggage due to a critical shortage of baggage handlers, fears over failures to deliver luggage and excessive waiting times are rising, with one Team GB Paralympian forced to wait more than four hours to reclaim his wheelchair.

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Lifetime of gravity measurements heralds new beginning

GOCE node full image 2

Title GOCE
Released 23/10/2013 11:04 am
Copyright ESA/AOES Medialab
Description

Along with its sleek design, GOCE achieved drag-free flight with an electric ion propulsion system mounted at the back of the satellite, relative to its direction of flight. Unlike conventional fuel-driven engines, the system used electrically-charged xenon to create a gentle thrust. The system continually generated tiny forces to counteract the drag the satellite experienced as it cut through the remnants of Earth’s atmosphere.
Id 298457

 

30 July 2014

Although ESA’s GOCE satellite is no more, all of the measurements it gathered during its life skirting the fringes our atmosphere, including the very last as it drifted slowly back to Earth, have been drawn together to offer new opportunities for science.

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