The six planets will be visible in the days immediately leading up to Jan. 21, and for about four weeks afterward. Mars, ...

For decades, scientists have tried in vain to accurately predict solar flares—intense bursts of light on the sun that can ...

The ESA Solar Orbiter has provided a stunning new look at the Sun by combining 25 high-resolution images. This mosaic offers a detailed view of the solar surface, including sunspots and granules, ...