2020 June 15

A Ring of Fire Sunrise Solar Eclipse
* Video Credit: Colin Legg & Geoff Sims
https://www.facebook.com/ColinLeggPhotography
https://www.facebook.com/BeyondBeneath
* Music: Peter Nanasi
https://www.peternanasi.com/about

Explanation:
What's rising above the horizon behind those clouds? It's the Sun. Most sunrises don't look like this, though, because most sunrises don't include the Moon. In the early morning of 2013 May 10, however, from Western Australia, the Moon was between the Earth and the rising Sun. At times, it would be hard for the uninformed to understand what was happening. In an annular eclipse, the Moon is too far from the Earth to block the entire Sun, and at most leaves a ring of fire where sunlight pours out around every edge of the Moon. The featured time-lapse video also recorded the eclipse through the high refraction of the Earth's atmosphere just above the horizon, making the unusual rising Sun and Moon appear also flattened. As the video continues on, the Sun continues to rise, and the Sun and Moon begin to separate. This weekend, a new annular solar eclipse will occur, visible from central Africa, the Arabian Peninsula, and a narrow band across Asia, with much of Earth's Eastern hemisphere being able to see a partial solar eclipse.

https://apod.nasa.gov/apod/ap200615.html

** Note by grobi:
"To upload this video, I converted it and compressed it to a smaller file-size under #linux with the free software ffmpeg and the corresponding command:

'ffmpeg -i video_in.mkv -vcodec libx265 -crf 28 video_out.mp4'

Maybe you would like to post a corresponding video on a scientifically related topic, but it is perhaps too big? Then try ffmpeg."

"Welcome back to the
Space Culture Club
(Feel free to contribute, rather as a reply than using the hashtag)
https://defcon.social/@grobi/114663418339078163 "

2023 September 17

Moon Mountains Magnified during Ring of Fire Eclipse
* Credit & Copyright: Wang Letian (Eyes at Night)
http://www.luckwlt.com/About%20Me.html

Explanation:
What are those dark streaks in this composite image of a solar eclipse? They are reversed shadows of mountains at the edge of the Moon. The center image, captured from Xiamen, China, has the Moon's center directly in front of the Sun's center. The Moon, though, was too far from the Earth to completely block the entire Sun. Light that streamed around the edges of the Moon is called a ring of fire. Images at each end of the sequence show sunlight that streamed through lunar valleys. As the Moon moved further in front of the Sun, left to right, only the higher peaks on the Moon's perimeter could block sunlight. Therefore, thehttps://defcon.social/@grobi/114663418339078163 dark streaks are projected, distorted, reversed, and magnified shadows of mountains at the Moon's edge. Bright areas are called Baily's Beads. Only people in a narrow swath across Earth's Eastern Hemisphere were able to view this full annular solar eclipse in 2020. Next month, though, a narrow swath crossing both North and South America will be exposed to the next annular solar eclipse. And next April, a total solar eclipse will be visible across North America.

https://apod.nasa.gov/apod/ap230917.html