Troy Naismith

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APOD: Comet Lovejoy's Tail (2015 Jan 17) Image Credit & Copyright: Rogelio Bernal Andreo (Deep Sky Colors) Explanation: Sweeping north in planet Earth's sky, Comet Lovejoy's greenish coma and blue tinted ion tail stretched across this field of stars in the constellation Taurus on January 13. The inset at the upper left shows the 1/2 degree angular size of the full moon for scale. So Lovejoy's coma appears only a little smaller (but much fainter) than a full moon on the sky, and its tail is visible for over 4 degrees across the frame. That corresponds to over 5 million kilometers at the comet's estimated distance of 75 million kilometers from Earth. Blown by the solar wind, the comet's tenuous, structured ion tail streams away from the Sun, growing as this Comet Lovejoy heads toward perihelion, its closest approach to the Sun, on January 30. While diatomic carbon (C2) gas fluorescing in sunlight produces the coma's green color, the fainter bluish tail is tinted by emission from ionized carbon monoxide (CO+). Starship Asterisk* • APOD Discussion Page #APOD

After criticism from Microsoft, Google reveals more Windows security problems

Google's done it again.<p>Early this week, Microsoft was publicly displeased with Google for revealing a Windows security hole that would allow hackers …


Secret US cybersecurity report: encryption vital to protect private data

Newly uncovered Snowden document contrasts with British PM’s vow to crack down on encrypted messaging after Paris attacks<p>A secret US cybersecurity report warned that government and private computers were being left vulnerable to online attacks from Russia, China and criminal gangs because …


Ranking Programming Languages: Swift's Growth Is "Unprecedented"

Developers may be a fickle bunch, but they’re sticking with Java, thank you very much. Even so, as the newest Redmonk Programming Language Rankings suggest, developers are very (very) open to new languages like Go and Swift that help them program for the cloud and mobile, respectively.<p>In the case …

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Antarctic diamond: Rare photos of a flipped iceberg

A rare sighting of a flipped iceberg has shown what really lies beneath the water's surface in Antarctica.<p>In a series of breathtaking images San …