Question

How long would it take to reach our nearest star with current technologies?

Answer 1

Hint:In this question we have to find the time we would take to reach our nearest star with the technologies we have till now. For this question the first thing we need is the information about the nearest star and the distance of the star from earth.

Complete step by step answer:
The nearest star to earth is Proxima Centauri. The distance of Proxima Centauri is 4.2 light years from earth. To find the time taken to reach Proxima Centauri we need so much information, like the mass of the star and the distance of the star from the center. Then using this information we can find the escape velocity of the spaceship to reach the star using following formula,
\[{v_e} = \sqrt {\dfrac{{2GM}}{r}} \]
Where,
\[{v_e}\] is the escape velocity in m/s
G is gravitational constant
M is mass of the star in Kg
r is the distance of center of mass of the star in m
Now, to find time we will use following formula of time,
$time = \dfrac{{distance}}{{speed}}$
Hence, using the above formula we can easily find the time we will take to reach our nearest star. Theoretically the time required is 6,300 years.
Result- Hence, from the above explanation it is clear that the time required to reach our nearest star with current technologies is 6,300 years.

Note:
Hence, from the above calculation we can find the time we will take to reach our nearest star. As we know that astrophysics is a tedious field we need to have correct information to find any parameter and it takes so long to get such information like to find the mass of any star first we need the composition of the star only then we can find the mass of the star.