The relative positions of the stars in the night sky
are absolutely fixed and therefore we can name constellations with certainty.
change appreciably over about four thousand years, which is why the ancient. Egyptians named different constellations than those of today
are changing, but very slowly such that appreciable change cannot be observed even over several centuries or even several thousand years.
appear to change because the sun moves among them over the course of a year.

Question

The relative positions of the stars in the night sky
are absolutely fixed and therefore we can name constellations with certainty.
change appreciably over about four thousand years, which is why the ancient. Egyptians named different constellations than those of today
are changing, but very slowly such that appreciable change cannot be observed even over several centuries or even several thousand years.
appear to change because the sun moves among them over the course of a year.

Toppr Admin · Accepted Answer

The correct option is C are changing- but very slowly such that appreciable change cannot be observed even over several centuries or even several thousand years-Everything in nature tries to be at its minimum potential energy- Planetary objects stay in their places due to their gravitational potential energy- they tend to stay at a distance where its minimum