ROANOKE, Va. – May’s full moon will be considered a ‘supermoon,’ which means that it’s full during its closest approach to Earth (called perigee).
At the same time, the earth will be passing in between the moon and the sun. This will cast a shadow over the moon, known as the lunar eclipse.
For our area, this likely won’t be a big deal. Folks in the western part of the country will be treated to a better view (see map above). In fact, this is the first total lunar eclipse visible west of the Rockies in more than two years.
Earth’s outer shadow (the penumbra) begins casting over the moon’s surface before 5 a.m. local time Wednesday.
By 5:45 a.m., the moon will be completely inside the earth’s outer shadow. This is the partial lunar eclipse, when you may notice it looking slightly dimmer.
The part of a lunar eclipse that most sky-gazers get excited about is the red hue. This happens due to Rayleigh scattering of light, similar to what we see during sunrises and sunsets.