Chaza Posted July 3, 2019 Share Posted July 3, 2019 I watched some video of the eclipse, I noticed the sky was lit as the eclipse took place. My question is, how can the sky be lit if the moon is blocking out the sun. It seems strange to have no sun, but yet have a lit skyline. Any explanation please Chaza Link to comment Share on other sites More sharing options...
Peter Drew Posted July 3, 2019 Share Posted July 3, 2019 I think it's something to do with the Sun being much larger than the Moon. The Moon only appears to be the same size as the Sun's image because it is much closer. The track of totality is not very wide so sunlight spills round the image of the moon away from the track. 😀 Link to comment Share on other sites More sharing options...
GraemeC Posted July 3, 2019 Share Posted July 3, 2019 (edited) The moon is only blocking out the sun for those people within a relatively narrow strip taken by the umbral shadow. For this eclipse the width of totality was around 120 miles. Further away from this the sun is shining and it is this light you can see. Looking at low angles through the atmosphere you are easily looking through into areas where the sun is still shining. You do get a good 360 degree twilight effect which marks the transition from fully illuminated atmosphere to the atmosphere that is under the shadow. I saw it in Wyoming in 2017 - spectacular. Edited July 3, 2019 by GraemeC Typo Link to comment Share on other sites More sharing options...
maw lod qan Posted July 3, 2019 Share Posted July 3, 2019 When your in the twilight of totality the change is incredible. I'm pretty sure that at noon, it was Venus we could see shining. Link to comment Share on other sites More sharing options...
RT65CB-SWL Posted July 4, 2019 Share Posted July 4, 2019 This video from YouTube should help to explain the answer as given by @Peter Drew & @GraemeC... The dark area, (and gets darker after 3m30s until approximately 4m20s), that appears at the bottom of video is the Moon's shadow. And to give you an idea of the relative size of Earth & Moon. This YouTube video shows it... Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now