Question

In Lecture 4 we discussed the scale of the universe, shrinking it down by a factor of 10 billion. According to this scale, how far away would Tau Ceti be in kilometers (actual distance 11.89 light years)? What country would you have to travel to (heading directly 6. west) from Irvine, CA to reach this distance? 7. The New Horizons probe, which took 9 years to reach Pluto in 2015, holds the record for the fastest launch velocity, at 58,000 km/hr (this is over 100 times faster than a speeding bullet). At this speed, how long would it take (in years) to get to the nearest star system Alpha Centauri, 4.4 light years away? 1 light year is approximately equal to 10 trillion (1013) knm

Answer 1