It looks like you aren't in the UK ... that's ok!

Just be aware that you may see things in a different place in the sky. And if you are on the equator or in the southern hemisphere, you will probably not be able to complete all the challenges.

If you take part, please set your location as "Not UK". We would love to know how many people are joining in from other countries.

Choose a marker and set location

2024 Challenges

Go outside and pick a challenge

Complete challenges to collect badges and add your marker to the 100 Hours map

Locations 237 Stargazers 331 Challenges 898

Stargazing events near me

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Find us at @IAU_NOC_UK for updates and to see what people worldwide are doing to celebrate 100 Hours