Posts Tagged ‘Wide-field Infrared Survey Explorer’

This Week in Space – March 19, 2010

March 21, 2010

The latest edition of “This Week in Space” is now available!  Check us out!!  And many thanks to our sponsors, Binary Space and Space Careers!

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Discovery at launchpad 39A. Source: NASA

Two million parts – all of them form the low bidder – as Wally Schirra  once famously quipped – if you put those parts together just right – you’ve got yourself a space shuttle – the problem is – just about every single one of them has to be working perfectly before a shuttle ever clears the tower.  But exceptions can be made….and that is what the shuttle launch team is doing for this next launch. With Discovery sitting on the launch pad for its penultimate flight – a helium valve  failed. The helium is used to make sure there is pressure in the fuel lines that feed the Orbital Maneuvering System engines – which handle the big course changes in orbit. Fixing the valve means a roll back to the the hangar – and a big delay. So the shuttle team will try to verify that some regulators downstream of the valve are working just fine. If so, it means they will have confidence they have only lost one layer of redundancy – and thus give Discovery its launching papers.

Source:  WISENASA’s Wide Field Infrared Survey Explorer – or WISE has captured an image – Charles Foster Kane would have liked to see – rosebud….
this one is no sled though – it is a cosmic blossom in a cluster of stars in the Berkeley 59 – which sounds a little like a group of sixties anti war radicals…anyway…the blue dots are the stars…and they are formed by the orange dust cloud in the middle – and the green – those are polycyclic aromatic hydrocarbons – of course…you can find those on earth in barbecue pits…for some reason I am hungry…WISE is also hunting for asteroids – and it has found more than a dozen that are near to earth – and we didn’t even know we were there. You’d be WISE to listen to this story – Chicken Littles.

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The Sky Is Falling! The Sky Is Falling!

January 30, 2010
WISE Spacecraft.  Source:  NASA/JPL

WISE Spacecraft. Source: NASA/JPL

The WISE guy has hit some pay celestial pay dirt.

NASA’s Wide-field Infrared Survey Explorer, launched in December – took this shot of a near earth asteroid on January 12th. Designated 2010 AB78 – (comets have much more fun names…) this asteroid is 158 million kilometers (98 million miles) from Earth. Diameter is one kilometer or 6 tenths of a mile. Scientists say this space rock is not on a path to collide with earth in the foreseeable future.

But an expert panel has just concluded we are not being so wise about conducting a survey of big near earth asteroids that could clonk us and wreak havoc. The National Research Council says the goal to find 90% of the earth threatening asteroids 460 feet/ 140 meters or larger 2020 will not be met – for lack of funding. Scientists say an asteroid as small as a hundred feet – or 30 meters across – could take out a city. If you don’t think this is money well spent – go ask a dinosaur what he or she thinks.

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OH A WISE Guy – eh?

December 21, 2009
WISE Spacecraft.  Source:  NASA/JPL

WISE Spacecraft. Source: NASA/JPL

Somewhere up there Curly Howard is nyuck nyuck nyucking over this one. NASA’s Wide-field Infrared Survey Explorer  – or WISE - spacecraft left the pad at Vandenberg Air Force Base – is now on its way to scan the heavens in unprecedented ways.

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NASA hopes WISE will orbit the earth from pole to pole for about ten months – snapping millions of infrared images – casting a wide net for cool things – and I mean that literally – things like brown dwarfs – an near earth asteroids and comets – which are hard for us to see otherwise.

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