How many earth years would it take to reach andromeda galaxy?

Question

Hailey Alvarez · Accepted Answer

With a continuous acceleration of #1g# for #14# years followed by a continuous deceleration of #1g# for #14# years you could reach the Andromeda Galaxy. But...

(1) Sustaining an acceleration/deceleration of #1g# for #28# years would take a lot of energy/fuel. (2) Unless a strong shield could be created, the radiation from coming into contact with interstellar particles at the speeds you would be traveling would most likely be lethal. (3) While you would only experience #28# years (due to the effects of special relativity), the length of time experienced by observers at home would be about #2.5# million years. So what's the point of your journey anyway?

Levi Anderson · Answer

It depends on your speed.

Depending on how quickly you move. It will take that many years for light to travel to the Andromeda galaxy because it is 2.537 million light years away from Earth. However, as these are very small fractions of the speed of light, it will take much longer than billions of years to leave the planet Earth. An escape velocity of 11.2 km/s or 40,320 km/h is required, and a speed of 42.1 km/s is required to escape the Sun's gravity and exit the Solar System.

Lydia Allen · Answer

undefined The distance between Earth and the Andromeda Galaxy, which is approximately 2.537 million light-years away, would take, if light traveled at the speed of light, 2.537 million years.