Sunday 21 June 2020

The darkest day of year...

Have you heard about light pollution?

You could be a world record holder AND help scientists map light pollution and the impacts on the environment, by being part of

"the worlds largest online sustainability lesson (about light pollution)"


What do you need to do to be a part of this great challenge?

  • Sign up - the earlier you do this the better. Weekly we're giving prizes away and tips for the event to registrants.
  • Sign in - 21 June, 3pm NZST
  • Watch some videos, answer all 5 questions, and do a night sky observation. 
  • Finish all parts of the lesson within 24 hours.

Will you help?

WHY should you sign up?

It's not every day of the year you get asked to go outside at night and look up to the stars. So why should you do it on this night? So you can:

  • Learn how easily you can help to reduce light pollution

  • Be a citizen scientist for a night

  • Say you've helped our natural environment

  • Walk away a World Record Holder!

  • Win PRIZES (paid registrations only)

Days to go

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Participate in the online lesson only

PAY $3.00

Win prizes, receive helpful tips and (if we break the world record) a copy of the official certificate.


  • Is there a fee to participate?

    There are two options. Participate for free or pay the small fee of $3.00 AUD to participate, receive an official certificate, and go in the draw to win prizes.

  • I already know about light pollution - why would I do this?

    Because you care about light pollution. There are two parts to the event: An online test AND a night sky measurement. The test is not to show how much you know but to demonstrate to those who are making decisions that there are large numbers of people who care! The globe at night web app is used for science and has very very few measurements/observations from the southern hemisphere. Ecologists want to know if what is happening on the ground up, is what satellites are showing down... ie... is light pollution worse on the ground? Ecologists are particularly keen on knowing this, as whilst we have shielded lights it isn't stopping the surge of on the ground lighting that is impacting pollination etc

  • Can I enter more than once?

    No. Qualification for the GWR specify one entry only per person. Registering twice will nullify your entry. If you have more than one device in your house, and additional email addresses, we encourage you to sign up as different participants and make your night sky observation from different parts of your backyard, or street.

  • I live in the city and don't see the stars. Can I still enter?

    YES! This is exactly what we want to know. You are helping scientists around the world map the dark and light patches of our planet at night. We want people from all environments urban, city, country, marine, parks... everyone is encouraged to record their night sky conditions.

  • When does the challenge start?

    The World Record challenge will commence at 3pm NZST 21 JUNE - to the whole world. You can go online and start the lesson, but you must do you light pollution measurement with GLOBE AT NIGHT after dark.

  • What happens if it's cloudy on the night?

    Scientists record all conditions, and as a citizen scientist, we want you to do that too. Rain, cloud, or clear skies, your observation is valid. Your observation on 21 June is the one that counts for the GBWR, but you may go back to the Globe at Night web app, and do observations at any time.

  • Do I have to live in Australia or New Zealand?

    No! Light pollution is a global issue and this is a global challenge. Share this with your friends, family, colleague and cohorts all around the world. If you are in the northern hemisphere you will be asked to look for the constellation of Bootes.

  • When will I get my certificate?

    GWR may take several weeks to confirm the status of our attempt. We'll let you know as soon as we can and send an e-certificate out to share the news

  • Do I need any special equipment?

    You will need a computer, smartphone or tablet with an internet connection to participate in the lesson. The observation is recorded on the Globe at Night Web page. For those in astronomical societies or the like, and have an SQM and can take some significant readings of the night sky, that will be very useful, but not required.

National Light Pollution Guidelines

The National Light Pollution Guidelines for Wildlife aim to raise awareness of the potential impacts of artificial light on wildlife and provide a framework for assessing and managing these impacts.
National Light Pollution Guidelines