Which of the following observatories is most likely to discover a black hole in a binary system?
A) the Hubble Space Telescope
B) the Chandra X-Ray Observatory
C) the SOFIA airborne infrared observatory
D) the Arecibo Radio Observatory
Question 2
There are no aurora on Venus because it
A) lacks atmospheric oxygen.
B) is too hot.
C) lacks a strong magnetic field.
D) lacks an ionosphere.
E) lacks strong winds.