Question

Our galaxy is estimated to be

Answer 1

Answer:

Would take 1.48 x 10¹¹ years to cross the galaxy

Step-by-step explanation:

galaxy is estimated to be  5.6 × 10¹⁹ mi across = Distance

spaceship traveling at 43,000 mph = Speed

From Speed = Distance / Time

∴ Time = Distance / Speed

           = 5.6 × 10¹⁹ / 43,000

           = 5.6 × 10¹⁹ / 4.3 x 10⁴

           = 5.6/4.3 x 10¹⁹ ⁻ ⁴

            = 1.3 x 10¹⁵ hours

Convert time in hours to years

Asuming 24 hours make a day and 365days make a year

= 1.48 x 10¹¹ years to cross the galaxy