Approximately how long does it take light to travel across the diameter of the Milky Way?
A) 27,000 years
B) 100,000 years
C) 200,000 years
D) 1 million years
B
You might also like to view...
What is the Prandtl number?
What will be an ideal response?
All of the statements below are true. Which one gives the primary reason why the surface of Venus today is some 450°C hotter than the surface of Earth?
A) Venus is only about 73 percent as far from the Sun as Earth. B) Venus has a much stronger greenhouse effect than Earth. C) Venus has a much higher reflectivity than Earth. D) Venus has a higher atmospheric pressure than Earth.
The helium flash stage lasts several thousand years
Indicate whether the statement is true or false
Expressed in standard powers-of-10 notation and rounded to four significant figures, the number 0.00023648 is
a. 2.364 × 10^3. b. 2.365 × 10^4. c. 2.365 × 10^-4. d. 236.4 × 10^-6.