NEO Earth Close Approach

I found this site with Near Earth Objects & Earth Close Approaches. It’s maintained by JPL and NASA. Occasionally, you’ll hear that an asteroid is going to come closer to Earth than the Moon. Is that significant? Eh, maybe? There are other factors. 

Don’t just look at the site and think we’re dinosaur-brand doomed. Check out these numbers to put it in perspective. I just compiled this list, and I did it sort of quickly. Some of these numbers may be a little off, but it will still paint the picture. 

Mercury: Diameter = 3,031.9 mi
Venus: Diameter = 7,520.8 mi
Earth: Diameter = 7,917.5 mi ⬅︎ That’s us.
Mars: Diameter = 4,212.3 mi
Jupiter: Diameter = 86,881 mi
Saturn: Diameter = 72,367 mi
Uranus: Diameter = 31,518 mi
Neptune: Diameter = 30,599 mi
Pluto: Diameter = 1,476.8 mi

If you were to string all of these planets end-to-end, the length of the string would be the sum of the diameters.

Length of 9 Planets end-to-end: 245,524.3 mi

Distance from Earth to the Moon: 238,900 mi

These aren’t intuitive values for most people. I mean, the Moon is RIGHT THERE, isn’t it? Jupiter and Saturn are so BIG compared to Earth, right? Size is relative, but distance and diameter are not.

Length of 9 Planets end-to-end: 245,524.3 mi. Distance from Earth to the Moon: 238,900 mi. Size is relative, but distance and diameter are not. Click To Tweet