"Some of the extreme ultraviolet light above active regions flickers erratically for a few hours before a solar flare," ...

If you struggled with the quiz, don't panic - we've got you! You can revise uses and dangers of radiation by clicking the links below.

As the UK anti-nuclear power pressure group no2nuclearpower says, "there is no such thing as an absolutely safe level of radiation: all exposures no matter how small entail some risk - even ...

The biological effects of ionizing radiation vary with the type and energy. A measure of the risk of biological harm is the dose of radiation that the tissues receive. The unit of absorbed radiation ...

And the greatest risk is an invisible one—harmful UV radiation. UV-A, UV-B, and UV-C are forms of ultraviolet light rays emitted from the only star in our solar system. These three types of ...

In the next few decades, crewed missions to the moon and Mars will likely become frequent. One of the main challenges faced ...