Archive for the ‘stargazing’ tag
Guest post by Dr. Constance E. Walker, director of GLOBE at Night
What would it be like without stars at night? What is it we lose?
Starry night skies have given us poetry, art, music and the wonder to explore. A bright night sky (aka “light pollution”) affects energy consumption, health and wildlife too.
Spend a few minutes to help scientists by measuring the brightness of your night sky. Join the GLOBE at Night citizen-science campaign! The first campaign starts January 3 and runs through January 12.
GLOBE at Night is a worldwide, hands-on science and education program to encourage citizen-scientists worldwide to record the brightness of their night sky. During five select sets of dates in 2013, children and adults match the appearance of a constellation (Orion or Leo in the northern hemisphere, and Orion and Crux in the southern hemisphere) with seven star charts of progressively fainter stars. Participants then submit their choice of star chart with their date, time and location. This can be done by computer (after the measurement) or by smart phone or pad (during the measurement). From these data an interactive map of all worldwide observations is created.
Over the past 7 years of 10-day campaigns, people in 115 countries have contributed over 83,000 measurements, making GLOBE at Night the most successful, light pollution citizen-science campaign to date. The GLOBE at Night website is easy to use, comprehensive, and holds an abundance of background information. Guides, activities, one-page flyers and postcards advertising the campaign are available. Through GLOBE at Night, students, teachers, parents and community members are amassing a data set from which they can explore the nature of light pollution locally and across the globe.
There are 5 GLOBE at Night campaigns in 2013:
January 3 – 12
January 31 – February 9
March 3 – 12
March 31 – April 9
April 29 – May 8
Make a difference and join the GLOBE at Night campaign.
Wow! Take a look at the map on the Great World Wide Star Count website. The fall campaign started yesterday and already there are oodles of citizen scientists from around the world posting their data. Citizen scientists from China, Australia, India, Kuwait, Egypt, South Africa, the European Union, Canada, United States, and Mexico have gotten involved so far. They are all looking at how bright the stars are overhead to help us get a better understanding of how streetlights, porch lights, car headlights and other nighttime lights affect how we see the stars in the sky.
Because different stars are visible in different parts of the planet, people north of the equator, in the Northern Hemisphere, are looking for different stars than people south of the equator in the Southern Hemisphere. Citizen scientists that are participating in the Great World Wide Star Count in the Northern Hemisphere are looking at the brightness of stars in the constellation Cygnus. Citizen scientists in the Southern Hemisphere are looking at the brightness of stars in the constellation Sagittarius.
To join the worldwide star gazing effort, print the magnitude chart from Star Count. Then, an hour after sunset sometimes between October 14 and 28, 2011, go outside and find the constellation Cygnus or Sagittarius in the sky. (If you’d like to plan ahead yet are not sure what time the sun sets, you can figure it out with a sunset calculator.)
How bright are those stars? Can you see them clearly or are they hard to see? Compare the way the constellation looks in the sky with the magnitude charts. Record the magnitude of the stars according to the directions in the activity guide and you are ready to report your findings at the Star Count website.
After reporting the magnitude of the stars you saw, take a look at the results pouring into the Star Count map. In the five years that the project has been going on, tens of thousands of people have participated from about 90 countries around the world. You might notice on the map that the same stars appear brighter in some areas of than they do in others. The stars are the same, but they are being seen from places that have different amounts of light pollution – lights from buildings, roads and parking lots that make it difficult to see the stars of the night sky.
Great World Wide Star Count
Days: October 14-28, 2011
Time: An hour after sunset
Enjoy to stars!