Choose the correct explanation why does the statement make sense (or is clearly true) or does not make sense (or is clearly false): NASA will soon launch a spaceship that will photograph our Milky Way Galaxy from beyond its halo.
A. The statement doesn't make sense. NASA need to build a spaceship that able to travel close to the speed of light to get into the halo of Milky Way in reasonable time, such as hundred years. it's well beyond the current technology.
B. The statement doesn't make sense. Even if NASA could build a spaceship that traveled close to the speed of light, it would take tens of thousands of years to get into the halo and then the same time for image to get back to Earth.
C. The statement doesn't make sense. At the speed of the current spaceships, it would take tens of thousands of years to get into the halo of Milky Way, though reasonable time, such as hundred years, is needed for image to get back to Earth.
D. The statement makes sense. If NASA can build a spaceship that will travel close the speed of light, it would take reasonable time, such as hundred years, to get into the halo to photograph the disk, and the same time for image to get back to Earth.
Ans: B. The statement doesn't make sense. Even if NASA could build a spaceship that traveled close to the speed of light, it would take tens of thousands of years to get into the halo and then the same time for image to get back to Earth.
You might also like to view...
A loop bent in the shape below carries a conventional current in the direction marked. What is the magnitude 
of the magnetic field at the point a on the diagram
due to just the horizontal segments of the loop? A. ?0I/4?R B. ?0I/4R C. ?0I/8R D. ?0I/2R E. ?0I/R F. Zero
DNA is a complex
a. atom. b. molecule. c. life form. d. mystery. e. acronym.
Which of the following is a unit of energy?
a. kilowatt-hour b. newton c. joules per second d. newton-second e. none of these
A wheel rotating about a fixed axis with a constant angular acceleration of 2.0 rad/s2 turns through 2.4 revolutions during a 2.0-s time interval. What is the angular velocity at the end of this time interval?
a. 9.5 rad/s b. 9.7 rad/s c. 9.3 rad/s d. 9.1 rad/s e. 8.8 rad/s