First Space Lightning Captured on Video – cassini
Last Updated on Thursday, 15 April 2010 04:28 Written by Daisy Harley Thursday, 15 April 2010 04:28
This video here is of lighting flashing on Saturn, and it’s the first ever captured of lightning not happening right here on planet Earth.
The evidence of lightning on Saturn has been around for years in the form of radio signals, but this is the first video and audio evidence of the phenomena ever captured. It was taken by the Cassini spacecraft of Saturn’s dark side.
The video was shot over 16 minutes and compressed down into the 10 seconds that you see here. The cloud, which is about 1,900 miles along its longest side, is illuminated by the reflection of Saturn’s rings. Each flash is about 190 miles (300 kilometers) across with an energy comparable to the most intense lightning here on Earth. In real time, they lasted for about one second.
he crackling soundtrack to the video is synthetic. It approximates the actual sounds received by Cassini’s radio recording instrument, which are above the human hearing range.
Article source: http://gizmodo.com/5518132/first-space-lightning-captured-on-video
Non-Nuclear US ICBM Can Strike Iran In 30 Minutes – ICBM
Last Updated on Thursday, 15 April 2010 03:58 Written by Daisy Harley Thursday, 15 April 2010 03:58
Defense Secretary Robert Gates has made an startling revelation today: The US has long-range missiles armed with high-power-but-non-nuclear explosives ready for a global strike. The (big) problem: China and Russia won’t be able to distinguish between nuclear and non-nuclear ICBMs.
This is what Gates said, talking on NBC’s Meet the Press:
We have, in addition to the nuclear deterrent today, a couple of things we didn’t have in the Soviet days… And we have prompt global strike affording us some conventional alternatives on long-range missiles that we didn’t have before.
Defense Tech’s Greg Grant says that maybe Gates meant to say “we will soon have”, but he also points out that the Navy has been working on conventional explosive D-5 Trident II missiles for “at least a decade” now. This development was funded through the Trident program—the program’s production line is still open—without the direct approval of Congress. The concern about this kind of weapon is that China, Russia, and other nuclear powers won’t be able to detect the nature of the ICBM with their early-warning systems. For them, on a computer screen, all inter-continental ballistic missiles look just like the same.
Even if the US President called each of the nuclear nations, I doubt that such a launch would be observed without serious concerns. An ICBM launched from California to North Korea or Iran would look very dangerous for both China and Russia, no matter what an US President is saying over the phone.
On top of that potential nuclear power ruckus, the fact is that a ballistic missile loaded with conventional explosives is not a very effective weapon. ICBMs are dumb weapons designed to reach a target area, spread their nuclear heads, and wipe everything around, completely, over a large blast radious. By loading ICBMs with explosives—no matter how powerful they may get—your destruction power is very low, while keeping a very low accuracy.
So basically, a launch of this type of missile may not reach its target, and make people with actual nuclear ICBMs very pissed off. Sounds like a lose-lose situation to me. [Defense Tech]
Article source: http://gizmodo.com/5518192/non+nuclear-us-icbm-can-strike-iran-in-30-minutes
The Moon in 3D – 3D moon
Last Updated on Thursday, 15 April 2010 03:58 Written by Daisy Harley Thursday, 15 April 2010 03:58
Get out your anaglyph glasses, because this Flickr gallery of 3D-ized Apollo landing sites (and more) is something special. Also, for those of you without red ‘n blue shades, is there no joy in your life? [Flickr via Bad Astronomy]
Article source: http://gizmodo.com/5518090/the-moon-in-3d


