How long would it take to get to the next closest galaxy?

Question

At current space travel speeds, how long would it take?

Answer 1

That would be the Andromeda Galaxy at 1.5 million light years. That should about 2 billion years at our current fastest speed.

Answer 2

I'm not sure exactly what the closest galaxy is, but I think it's the Sagittarius Dwarf. It is about 70000 light years from Earth, so if we assume an average speed of 30000 miles per hour (8.3 miles per second), it would take 1562400000 (about one and a half billion) years to get there. However, a radio signal sent there would get there in only 70000 years. There may be other miniature galaxies closer than the Sagittarius Dwarf, but if so I don't know how far away they are.

Answer 3

Lets stay in the spirit of not counting dwarf galaxies (like not counting dwarf planets) and say the nearest 'regular' galaxy is Andromeda at about 2.2 million light years away.
Accelerating at about 1 g (could be done with today's technology) one could accelerate to a significant proportion of the speed of light (.0.999999999999611 c) up to half way then begin to slow at the same rate.
Time would not pass at the same rate for the traveler. For the intrepid traveler it would take about 28 years but for us on Earth 2.2 million years will have elapsed.

Answer 4

The closest galaxy to us is Sagittarius Dwarf, about 70,000 light years away. Current space travel speeds are about 17,000 miles per hour times 8766 (number of hours in a year) = 149,022,000 miles in one year. As a light year is 5,865,696,000,000 miles long, it would take 39,361.27 years to go one light year. Times that by 70,000 light years distance to the galaxy you get 2,755,288,900 (2.7 billion+) years to reach the galaxy.

Answer 5

The closest galaxy is the Sagittarius Dwarf and is about 78,000 light years away. Since a light year is a bit over 5,000,000,000,000 miles, pick a speed and do the math.

Answer 6

a loooooooooooooong time

Answer 7

it's not possible. the distance are too vast.