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Making Unique Observations in a Very Cluttered World

Friday 6 March 2015

Mystery 'noise' could be an Earth-like world: Strange signals suggest habitable planet exists 22 light years away -

Mystery 'noise' could be an Earth-like world: Strange signals suggest habitable planet exists 22 light years away - 



Astronomers believe mysterious signals - previously dismissed as stellar bursts - are coming from an Earth-like planet.
The Gliese 581d planet has conditions that could support life, and is likely to be a rocky world, twice the size of Earth.
Signals from the planet were initially discovered in 2010, but last year dismissed as noise from distant stars.

Now, a further study claims that the 2014 research was based on 'inadequate analyses of the data' and that Gliese 581d does exist.

The planet was initially discovered in 2010. It was the first Earth-like planet found in the 'Goldilocks'-zone around another star.
But soon after the discovery, a group of scientists said the signals thought to be from a planet were in fact simply magnetic bursts from stars.
The latest study claims that the stellar bursts research was based on 'inadequate analyses of the data'. 
They said the method is suitable for large planets, but the technique is unable to find small planets like GJ 581d.
Last year, Pennsylvania State University researchers said Gliese 581d - and its companion Gliese 581g - were simply a trick of the light caused by magnetic bursts from a local star 22 light-years away. 
The new British research, however, argues the method uses by the Pennsylvania team was only suitable for large planets, and that it could miss small ones like GJ 581d.
The study, by Queen Mary University, London and the University of Hertfordshire, claims to use a more accurate model on the existing data.
'The existence (or not) of GJ 581d is significant because it was the first Earth-like planet discovered in the 'Goldilocks'-zone around another star and it is a benchmark case for the Doppler technique,' said lead author, Dr Guillem Anglada-Escudé.

Read more - 
http://www.dailymail.co.uk/sciencetech/article-2983202/Alien-noise-Earth-like-world-Mystery-signals-suggest-habitable-planet-exists-22-light-years-away.html

Lockheed demos new high-power laser weapon - disabled a vehicle engine from a distance of more than one mile -

Lockheed demos new high-power laser weapon - disabled a vehicle engine from a distance of more than one mile - 



A 30-kilowatt fiber laser weapon system from Lockheed Martin successfully disabled a vehicle engine from a distance of more than one mile.

In the test -- said to represent the highest power ever documented by a laser weapon of its type -- the beam from the Advanced Test High Energy Asset, or ATHENA, quickly burned through the engine manifold of a truck mounted and running on a test platform, Lockheed Martin said.

"Fiber-optic lasers are revolutionizing directed energy systems," said Keoki Jackson, Lockheed Martin chief technology officer. "We are investing in every component of the system -- from the optics and beam control to the laser itself -- to drive size, weight and power efficiencies.

"This test represents the next step to providing lightweight and rugged laser weapon systems for military aircraft, helicopters, ships and trucks."

The single-mode fiber laser weapon system prototype uses a technique called spectral beam combining -- multiple fiber laser modules form a single, powerful, high-quality beam.

Lockheed Martin said ATHENA is based on its Area Defense Anti-Munitions laser weapon system , which was developed by Lockheed Martin and successfully demonstrated against small airborne and sea-based targets.

Read more - 
http://www.spacewar.com/reports/Lockheed_demos_new_high-power_laser_weapon_999.html