This evening’s viewing challenge is the planet Mercury. It is less than half a fist above the west-northwestern horizon at ...

Centimeter-sized pebbles have been detected in protoplanetary discs using e‑MERLIN, filling in a critical phase of planet ...

Astronomers are preparing to study a dwarf planet that last came near Earth 11,000 years ago. Sedna is moving closer to the Sun, and this has intrigued experts who are eager to learn about the distant ...

The size of the Solar System and the Universe is truly beyond our comprehension. When we think of the vastness of space, we ...

It took over nine years for New Horizons to reach Pluto after blasting off atop an Atlas 5 rocket on Jan. 19, 2006. After ...

Thousands of solar tornadoes swirl above the sun’s surface at any given moment. These remarkable photos give us a glimpse at these stunning cosmic phenomena.