What is the declination of the celestial equator? a) 45 degrees b) 90 degrees c)0 degrees d) horizon

The correct answer is option c) 0 degrees

Explanation:

In the equatorial coordinate system there are two angles which can help in locating a point on the celestial sphere. Those two angles are declination and hour angle, where declination's can be measured along the hour circle and towards the north and south of the celestial sphere. So from this information we can say that if an object is at celestial equator it would have a declination of 0 degree , with if object being at north will have +90 degree and at south it will have declination of -90 degree.

the value of the 4 in the hundreds place is 400 while the value of th e 4 in the tens place is 40

400 is way bigger than 40.

the rub-al-khali is also known as the arabian desert and the "empty quarter"