GENERAL KNOWLEDGE

GK

SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why do stars in a constellation seem to stay in one position?
A
The Stars orbit the sun like the Earth does
B
The Stars do not orbit the sun or earth
C
The Stars orbit the earth like the moon
D
None of the above
Explanation: 

Detailed explanation-1: -The stars are not fixed, but are constantly moving. If you factor out the daily arcing motion of the stars across the sky due to the earth’s rotation, you end up with a pattern of stars that seems to never change.

Detailed explanation-2: -The Earth’s rotation causes someone looking at stars on the surface to see that they move across the sky, just as the Sun and Moon also change places. However, the stars are not changing places, rather the Earth is rotating and orbiting the Sun, which causes this impression.

Detailed explanation-3: -So why don’t the stars look like spinning glow sticks? The rotation of the earth does cause the stars to spin in the sky, but the spinning is much slower. Whereas it takes the stars one day to trace out a circular path in the sky, it takes tenths of a second for the glow stick to spin in a circle.

Detailed explanation-4: -A s Earth travels around the Sun, the nighttime side of Earth faces a different part of outer space. Because of this, different constellations are visible, depending on the time of year. But certain constellations can be seen all year long in some places because they are above the North Pole or below the South Pole. 4.

There is 1 question to complete.