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Comment Early 2017 (Score 1) 69

I remember the article where I first noticed the chart:
ACT Test Scores For US Students Drop To a 30-Year Low

Scores have been falling for six consecutive years, but the trend accelerated during the COVID-19 pandemic.

That pegs the beginning of the decline to 2017 (probably in the spring), before most of his first four years.

Comment Stunning Drop-Off in War Deaths Since (Score 1) 130

This whole vid is well worth your time (seriously, make a note to watch the whole thing today if you haven't), but the last section (starting at 14:20) is particularly striking in how few war deaths have occured since the invention (and rapid development/manufacture) of nuclear weapons.

It's a decade old and could use an update, but I was surprised to recently read that it mostly holds up even with the Ukraine/Russia War.

Comment Liquid Nitrogen or Vacuum? (Score 5, Informative) 19

These glass spheres, tiny yet mesmerizing, formed billions of years ago during fiery eruptions that launched molten droplets skyward, instantly freezing in space.

That's movie physics, not reality. They would have cooled more slowly in a vacuum.

If you want see them, this article has the only two pictures I found while (briefly) searching:
https://dailygalaxy.com/2025/0...

Comment YT Link (Score 5, Informative) 16

The key observation was that the Nu Octantis planet is retrograde -- the planet and one star both orbit the second star, but they do so in opposite directions, with the planet having the tighter orbit around the second star.

This (old) vid should help if you're having trouble visualizing the orbits:

https://www.youtube.com/watch?...

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