See Earth’s Shadow (our recent newsletter)

Here’s an excerpt from the recent Classical Astronomy Update newsletter:

During the early part of civil twilight, it’s actually possible to see the Earth’s shadow rising up in the eastern sky after the sunset.  Within minutes after the Sun has gone down, the Earth’s shadow appears as a dark portion of the sky in the east, opposite the position of the sunset.  A flat, treeless, unobstructed horizon is required to see the shadow, and it is not readily visible in mountainous regions.  

Read the complete newsletter here => Classical Astronomy Update – Signs of Spring