The singularity of a black hole is A) where general relativity ...

[CBme]

The singularity of a black hole is
 
  A) where general relativity predicts the density to be zero.
  B) where the current understanding of gravity is incomplete.
  C) the point at which nothing, not even light, can escape.
  D) the region between the Schwarzschild Radius and the event horizon.

Question 2

In any particular place on Earth, certain constellations are visible in the evening only at certain times of the year because
 
  A) our evening view of space depends on where Earth is located in its orbit around the Sun.
  B) during some times of year, some constellations drop below the southern horizon.
  C) some constellations are circumpolar.
  D) on any particular night, we can only see stars that are directly opposite (180 degrees away from) the Sun in the sky.

[Jbrasil]

Answer to Question 1

B

Answer to Question 2

A

[CBme]

TYSM

[helenmarkerine]

Thanks for the timely response, appreciate it