Face due west where the sun disappeared at 7:30 (that’s one hour after sunset this week) and turn 90 degrees to your left. You’ll be facing due south and if the clouds let you, you will see a very ...

Never-before-seen temperature and ion density measurements reveal that the effect of Jupiter's moons on its aurora are more complicated than scientists thought.

Astronomers studying the Kuiper Belt have detected a strange distortion that could point to an unknown planet lurking far beyond Neptune.

Seeking a quieter path through the Grand Canyon leads to an unexpected encounter with fear, humility, and awe.