Harriet_Porber

Harriet_Porber , 1 month ago

halphttps://lemmy.world/pictrs/image/3b03b210-1559-45c0-8335-e856c86f5d62.png

Harriet_Porber , 3 months ago

Earth’s natural satellite can serve as a valuable research partner in measuring the sun’s oblateness. This is due to a phenomenon known as “Baily’s beads,” which are the tiny flashes of light during an eclipse that occur as solar light passes over the moon’s rugged terrain of craters, hills, and valleys. Since satellite imagery has helped produce extremely detailed mappings of lunar topography, experts can match Baily’s beads to the moon’s features as it passes in front of the sun.

The way I'm guessing this works is: Baily's beads will be detectable on shitty cameras since they will be distinct flashes of light, and since we have very detailed information of the moon's topography they can determine information on the sun based on your phone's location and the timing of the flashes of light.

And if that is how it works, that is fuckin rad. A+ science.

Harriet_Porber , 3 months ago

basic astronomical observations

No, this is not basic. I should really not engage with a troll, but for anyone else curious about why this is cool:

Current estimates on the size of the sun are on the order of +-1000km. "Wright said different papers using a variety of methods have produced results that differ by as much as 930 miles (1,500 km)"

This request for cell phone observations is trying to do some wild math way out of my comprehension, based on the flashes of light shining between mountains and valleys on the moon, to calculate the size of the sun down to single-digit kilometer accuracy. That's three orders of magnitude more accurate than our current measurements. And this type of measurement can only happen during an eclipse.

To me that is absolutely wild, good job NASA 🚀