Astronomers have understood since the 1950s that the galaxy is curved, but until now, they’ve based that idea on models and indirect measurements.
Over a six-year period, the researchers took more than 100 images of the galaxy from their observatory in the Chilean Andes. In particular, they monitored 2,400 stars called classical Cepheids, a category of “young” supergiants less than 400 million years old.
Warped shape of the galaxy
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Shift Your Point of View to When America Was “Better”
How good or bad something is depends on what you compare against.
Who Earns More Income in American Households?
Compared to 1970, a shift towards women making the higher income.
How People Like You Spend Their Time
Looking at American time use for various combinations of sex, age, and employment status, on weekdays and weekends.