The circumference of the Earth at its equator is approximately 40,000 km. Find the average speed of a person standing at the equator for one day. What is the difference in the person’s velocity at 8 am and 8 pm?

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Why does magnet 5 float above magnet 4