Friday, 23 March 2007 05:26

Sharp-shooting telescope tracks space 'bullets'

New technology has given astronomers a sharper look at "bullets" of gas travelling through the Orion Nebula.

Originally discovered by Australian scientists Michael Burton and David Allen, the bullets are huge masses of molecular hydrogen tipped with iron atoms.

How big is 'huge'? Roughly ten times the size of Pluto's orbit. Harvesting just one would meet our iron needs forever, according to Burton. Apart from the size of the bullets, the fact that they are 1500 light years away presents certain problems.

The nebula is a mass of hydrogen and the bullets travel at up to 400 kilometres (250 miles) per second. The resulting impacts generate heat, causing the bullets to glow brightly and leave wakes of excited hydrogen that are clearly visible in infrared images.

Astronomers at the Gemini Observatory in Hawaii obtained impressively sharp images of the structures thanks to adaptive optics. Adaptive optics uses a deformable mirror to correct for distortions caused by the Earth's atmosphere.

Sodium ions in the upper atmosphere glow when stimulated with a laser, and their twinkling provides a reference source for the real-time adjustment of the telescope's adaptive optics.

Subscribe to ITWIRE UPDATE Newsletter here

Now’s the Time for 400G Migration

The optical fibre community is anxiously awaiting the benefits that 400G capacity per wavelength will bring to existing and future fibre optic networks.

Nearly every business wants to leverage the latest in digital offerings to remain competitive in their respective markets and to provide support for fast and ever-increasing demands for data capacity. 400G is the answer.

Initial challenges are associated with supporting such project and upgrades to fulfil the promise of higher-capacity transport.

The foundation of optical networking infrastructure includes coherent optical transceivers and digital signal processing (DSP), mux/demux, ROADM, and optical amplifiers, all of which must be able to support 400G capacity.

With today’s proprietary power-hungry and high cost transceivers and DSP, how is migration to 400G networks going to be a viable option?

PacketLight's next-generation standardised solutions may be the answer. Click below to read the full article.


WEBINAR PROMOTION ON ITWIRE: It's all about webinars

These days our customers Advertising & Marketing campaigns are mainly focussed on webinars.

If you wish to promote a Webinar we recommend at least a 2 week campaign prior to your event.

The iTWire campaign will include extensive adverts on our News Site and prominent Newsletter promotion and Promotional News & Editorial.

This coupled with the new capabilities 5G brings opens up huge opportunities for both network operators and enterprise organisations.

We have a Webinar Business Booster Pack and other supportive programs.

We look forward to discussing your campaign goals with you.


Stephen Withers

joomla visitors

Stephen Withers is one of Australia¹s most experienced IT journalists, having begun his career in the days of 8-bit 'microcomputers'. He covers the gamut from gadgets to enterprise systems. In previous lives he has been an academic, a systems programmer, an IT support manager, and an online services manager. Stephen holds an honours degree in Management Sciences and a PhD in Industrial and Business Studies.

Share News tips for the iTWire Journalists? Your tip will be anonymous




Guest Opinion

Guest Interviews

Guest Reviews

Guest Research

Guest Research & Case Studies

Channel News