A NASA mission to observe the activity of the solar wind has returned its first images of giant coronal mass ejections (CMEs) ...

Sunspot region 4114 has unleashed its most powerful solar flare yet — an X1.9 class that erupted late June 19, triggering shortwave radio blackouts across the Pacific Ocean, including parts of Hawaii.

Mars and Regulus will remain close to each other until June 22. Now they are not so close to each other, but they can still be seen together with the naked eye. The best time to observe is right after ...