how long would it take us to get to super earth?

Question

super earth is 20.5 light years away. so how long would it take time in years.

Answer 1

At the speed of the space shuttle 800,000 years, At the speed of the New Horizons probe to Pluto, 300,000 years,

Even to get to Alpha or Proxima Centauri (which do not have planets) it would take 160,000 years and 60,000 years respectively.

How are we going to be able to carry enough water, air, food and fuel for journeys of this duration?

Until such time as we develop propulson methods that would reduce the journey time to less than half a human lifetime, this is not a practical proposition.

If we are seriously considering colonising a planet, then the women on the mission have to be both old enough to have been fully trained in space flights (24?) when they set out and young enough to become a mother when they get there (it would be impractical to rear babies on the rocket). Realistically that means no older than 35 on arrival.

Without a second generation no colony survives. You see the problem!

Answer 2

It takes light 20.5 years and normal spacecraft cannot achieve even 0.1% of that velocity! If we assume that our spacecraft can travel at 300, 000 kms per hour (that is far higher than presently achieved speeds), we need 3600 times that 20.5 years. So, think of a few million years with our present technological resources.

Answer 3

At the speed of light it would take 20.5 years to get there. Slower speeds will make the trip longer.

Answer 4

Depends on how fast you are traveling and who is the observer. For Newtonian velocities and external observers, time = distance/velocity. For observers in the spaceship if it is traveling at relativistic velocities as observed outside,

t = (d){sqrt[1 - (v^2)/(c^2)]}/v inside

where "t" is time, "d" is distance, "v" is externally observed velocity, "c" is lightspeed.

A lightyear is 5.878x10^12 miles. At 20 miles/second that is at least 191,000 years (including leap years) one way. At 99% of lightspeed it is 20.7 years as seen externally and 2.9 years internally. Alas, there is no way to accelerate a macroscopic vehicle to 99% of lightspeed, not even with matter-antimatter annihalation.

Answer 5

Super earth has twice our gravity, close temperatures, may or may not have an atmosphere and may even be covered in sulfuric acid. We don't know. At shuttle speeds, it's a mere 800,000 years away.

Answer 6

super earth?
super earth doesn't exist so it would be impossible.

Answer 7

It depends on how we go on.