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Comment Re:Mixed analogies (40 golf balls on the Moon) (Score 1) 43

A standard golf ball is 42.67 mm. Average distance from the Earth to the Moon is 384 400 km.

If we can see a 42.67 mm ball at 24 km, then can we see a 4.267 m ball at 2400 km and a 683 m ball on the Moon?

A standard 18-hole golf course has an area of about 150 acres. Assuming it's circular, that would give a diameter of about 2800 ft, or well over 800 m. So yes, you could just make out a golf course on the moon.

Comment Re:Mixed analogies (40 golf balls on the Moon) (Score 1) 43

A standard golf ball is 42.67 mm. Average distance from the Earth to the Moon is 384 400 km.

If we can see a 42.67 mm ball at 24 km, then can we see a 4.267 m ball at 2400 km and a 683 m ball on the Moon?

A standard 18-hole golf course has a size of about 150 acres, or assuming it's circular, a diameter of about 2800 feet or a bit more than 800 m. So yes, you could just make out a golf course on the moon.

Comment "Missing" but not "Dark" Matter (Score 4, Informative) 64

It's well and good that they discovered tendrils of gas between galaxies. But this doesn't explain the anomalous stellar revolutions within galaxies observed by Vera Rubin and others. As I recall, those observations led to the proposal of dark matter.

TL/DR: this is "missing" matter but not "dark" matter. The latter is still unobserved, at least directly.

Comment Re:Banning bags did nothing other than line the po (Score 3, Informative) 21

Seems strange that Florida allows plastic bags and does not have a problem.

You think Florida doesn't have a problem with plastic bags? You're wrong. From the article I linked:

“These products make up the majority of the litter collected during cleanups around our state. It doesn’t make sense to ban local governments from trying to create healthier communities for wildlife and residents.” says Environment Florida advocate Mia McCormick.

Hundreds of thousands of pounds of plastic litter and polystyrene foam cups and to-go containers are collected from our beaches, parks and waterways every year through efforts like the Great American Cleanup and the International Coastal Cleanup.

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