How long does it take Mercury to go around the sun?

You are communicating with aliens on jupiter and saturn. when you send a light beam message to your friend on jupiter and receive a message from your friend on saturn, you realize that the light messages became curved when they passed by the sun.

What process underneath the earth's crust do scientists think causes the movement of earth's plates?

Why is population concentrated, or denser, in some areas and not in others?

Conflict between Armenians and Azeris resulted in a war over

The Mojave Desert lies to the east of the coastal and Sierra Nevada mountains in California. Deserts in Chile lie to the west of the Andes Mountains. Both the California and the Andes mountains run along the west coast of their respective continents.

What landforms are created at convergent boundaries?

In which direction does the Sun appear to move across the sky? Ofrom west to east from east to west from north to south from south to north

What is a planetary nebula neither a planet nor a nebula?

Which of the systems below is not true about atmospheric circulation patterns

What will happen when the stars go out