Let’s try a demonstration that we all enjoyed in elementary school. Close one eye, hold out your thumb at arm’s length, and align it with an object on the other side of the room. Without moving your ...
Regular readers of my Stargazers columns have surely become accustomed to seeing some pretty big numbers. For example, in any one column, I might explain that our Milky Way galaxy is home to hundreds ...
Let’s try a demonstration that we all enjoyed in elementary school. Close one eye, hold out your thumb at arm’s length, and align it with an object on the other side of the room. Without moving your ...
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