The use of kilometers is no longer a sensible unit for measuring distances in space due to its vastness. To overcome this, astronomers came up with the light-year.

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This video shows you how to use a bubble detector as part of the RADI-N2 & You Action Project.

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Most people wouldn’t guess that rocket scientists sometimes fail to catch silly mistakes, especially because it matters. But they do, and have lost machines that cost more than your average Hollywood blockbuster.

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Learn about the bubble detectors being used in the RADI-N2 & you Action Project in this Sky Science backgrounder

Learn More about The bubble detector - Personal neutron dosimeter (BD-PND)