Planet Earth and the life it contains wouldn't exist if it weren't for the sun. But the sun also poses a serious threat to life, by constantly spewing harmful radiation into the solar system. Exactly ...

At the start of the year, Earth will quietly reach a milestone in its orbit around the sun. Known as perihelion, this is the moment when our planet is closer to the sun than at any other point in the ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. What is meant by solar storm and solar wind? – ...