If you're up late on Monday night (Oct. 13), or awake in the predawn hours of Tuesday (Oct. 14), look east for a striking sight.
The moon, just hours past its last quarter phase, will rise above the east-northeastern horizon shortly before midnight local time. Shining about 6 degrees to its right will be Jupiter, the largest planet in our solar system.
To estimate the distance between them, hold out your clenched fist; it measures roughly 10 degrees across at arm's length, so the moon and Jupiter will be separated by roughly a little more than half of a fist. It is, of course, an illusion of perspective: the moon is only 235,000 miles (378,000 kilometers) from Earth. Meanwhile, Jupiter is 477 million miles (768 million km) away, more than 2,000 times farther out in space compared to our