In this episode, Astronomy magazine Editor Emeritus Dave Eicher invites you to head out after midnight on March 3 to observe an example of sublime celestial geometry — a total eclipse of the Moon.

Expect an uptick in aurora sightings near the spring equinox on March 20, as celestial geometry swings in favor of geomagnetic disturbances. When you purchase through links on our site, we may earn an ...

The exact same celestial geometry that will cause a total solar eclipse in North America on April 8 will produce the longest one ever, but not for another 162 years. When you purchase through links on ...

On February 28, 2026, the evening sky will offer a rare celestial geometry: six planets of our Solar system will seem to gather in our visible portion of the starry vault. This "alignment," which ...