Since March, Venus has been visible in the morning sky, just east of sunrise. But the planet's greatest elongation, when it ...

For North Americans, this is an eye-catching sight, visible even from brightly lit cities.

This month's night sky is filled with close-range meteors, swirling nebulas, and prime stargazing conditions. Here’s when you ...

The next new moon will fall at around 11:02 p.m. ET on Tuesday, May 27. Manhattanhenge, a biannual event in Manhattan, New York, will occur at around 8:13 p.m. ET on Wednesday, May 28. Venus will ...