The sun rises and sets every day. We plan our lives around it. It's ironic, then, that "we know so little about the star at the center of our solar system," says Matina Gkioulidou, a space physicist ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) On Sept. 24, 2025, NASA launched two new missions to study the influence of the Sun on ...