Globe at Night 2014

GLOBE_at_night_logo_200The 2014 Globe at Night Campaign has kicked off! You can find all details on All you need to do is go outside, find the constellation of Orion and see which of the sample star charts has roughly the same number of stars as you can see. Whether you live in a dark sky area or in an urban light polluted area completing this survey helps us understand the real amount of light pollution globally.

Globe at Night 2013

GLOBE_at_night_logo_200The 2013 Globe at night event takes place this year from April 29th to May 8th. We’d encourage you to take part – their website has all the details! All you need to do is compare the sky that you see at your location with the charts on the website to get an estimate of your light pollution. Your reading will then be used to provide a global map of light pollution.

LED streetlamp aims to improve public’s view of stars

_67244300_lampsThe BBC reports that “Researchers believe they have come up with a new type of LED-powered streetlamp that could radically reduce light pollution.”

Potentially this work will allow streetlights to be accurately directed onto the area the light is required and have zero light spilling outside that area. The key will be convincing local government that it’s worthwhile investing in these technologies to save money in the longer term.

The full article is at

Loosing the Dark public awareness video

Losing the Dark is a “public service announcement” planetarium show, a collaboration of Loch Ness Productions and the International Dark-Sky Association. It introduces and illustrates some of the issues regarding light pollution, and suggests three simple actions people can take to help mitigate it. The show gives planetarium professionals a tool to help educate the public about the problems of light pollution. Planetarians are uniquely positioned to teach audiences ways we can all work together to implement responsible use of lighting.

Red is the new black: how the colour of urban skyglow varies with cloud cover

The development of street lamps based on solid-state lighting technology is likely to introduce a major change in the colour of urban skyglow (one form of light pollution). We demonstrate the need for long-term monitoring of this trend by reviewing the influences it is likely to have on disparate fields. We describe a prototype detector which is able to monitor these changes, and could be produced at a cost low enough to allow extremely widespread use. Continue reading

The City Dark

Is darkness becoming extinct? When filmmaker Ian Cheney moves from rural Maine to New York City and discovers streets awash in light and skies devoid of stars, he embarks on a journey to America’s brightest and darkest corners, asking astronomers, cancer researchers and ecologists what is lost in the glare of city lights. Blending a humorous, searching narrative with poetic footage of the night sky, The City Dark provides a fascinating introduction to the science of the dark and an exploration of our relationship to the stars.

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