How is Earth's axis tilt measured?
How was the tilt of Earth's axis calculated?
Why does the earth's axis tilt? Why earths axis is tilting? Who was the first person to calculate Earth's axial tilt? What if Earth was tilted on a 45 degree axis? Why does the earth spin about its axis? Why does earth rotate on it's axis? What is the cause of the earth's rotation on its axis? Why does the earth rotate on its axis? Why the earth rotates on its axis? What if earth's tilt was 40 degrees? When was the cycle of axial tilt first calculated? What makes Earth to rotate on its axis? What causes the Earth to rotate on its axis? What Is the cause of earth rotation around Its axis? Which force is responsible for the rotation of earth on its own axis and how? How many times does the earth spin around on its axis (relative to the fixed stars) in one year? What is the movement of earth around its axis? Does the Moon spin on its axis? If the sun's gravity causes earth to revolve around it, then what causes earth to rotate about its own axis? If earth starts rotating the reverse manner, i.e clockwise, do we have to measure the time in anti-clockwise direction? Why doesn't the moon rotate on its own axis like the earth does? How are poles of the earth fixed? What are the Axis powers? Why were the Axis powers called the Axis powers? What will happen if the earth starts rotating vertically on its axis? How can we calculate the radius of the earth? What would draining water look like if Earth wasn't tilted on it's axis? What is the rotation of the earth? Is it clockwise or anti-clockwise? What are the the Axis powers countries? Does rotation of planet depends on its radius?