Could someone give me an idea how far this is please?

Question

20.5 lightyears or 120 trillion miles.

Answer 1

120 trillion miles is 120,000,000,000,000 miles.

If Earth were the size of a pinhead then the Sun would be as big as a basketball and be 90 feet away. The Moon would be a smaller pinhead 3 inches from Earth. Mars would be another pinhead 136 feet from the Sun. And 20.5 light years would be 21,990 miles.

Answer 2

It is so far, far away that if you had a computer hooked to a radio here and out there (that could talk to it), an Email, or radio message, would take more than 20.5 Earth years to go, one way ( processor and server times added in ), between the two sites. Question and answering reply would take more than 41 Earth years for the out and back travel time.

I would not plan on making the trip. There would be entirely to much junk to try and pack for the journey.

Answer 3

Say what? 20.5 light years is about the same as 120 trillion miles, which is pretty darn far.

As a means of context. the earth is 93 million miles away from the Sun, and that distance is defined as an Astronomical Unit or (AU). The distance you're asking about is about 1.3 million AU, i.e., it's more than a million times farther than we are from the Sun.

Answer 4

what needs to be explained?
20.5 lightyears tells how long it takes for light to travel in one year, its rather far, so this takes 20 and a half years of light travel. ha

Answer 5

It's about the same as the distance between America hating lunatics and reality. That's a long way..
I'm wondering why you ask in terms of miles instead of kilometers.

Answer 6

yes its as far as the biggest known sun that we've found antari{100,000,000} million miles in diameter