More green for greener satellites

Towards a Greener Green Space Planning

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Three More Satellites Involved in

s from the NASA Orbital Debris Program Offi ce...........5 Meeting Reports ........8 Space Missions and Orbital Box Score ......9 During the one-month period from early August to early September, the U.S. Space Surveillance Network (SSN) detected fragmentations of three different resident space objects. Fortunately, all events appear to have released only small amounts of relatively shorted-liv...

More Satellites of Spiral Galaxies

We present a revised and expanded catalog of satellite galaxies of a set of isolated spiral galaxies similar in luminosity to the Milky Way. This sample of 115 satellites, 69 of which were discovered in our multifiber redshift survey, is used to further probe the results obtained from the original sample (Zaritsky et al. 1993). The satellites are, by definition, at projected separations ∼< 500 ...

Cleaner and Greener Doesn't Always Mean Clean and Green

LED based lighting and communications: An emerging technology for a greener more sustainable future

The paper discusses on the effect that the growth in our energy consumption as a species is having upon the planet, and how the global lighting and telecommunications industries are major contributors. We demonstrate that through the adoption of LED based lighting combined with visible light communications, substantial economical and power savings by orders of magnitude can be made over existin...