Question

what is one reason that exploring space is hard? it is very dangerous to drive on other planets. the speed of light cannot be measured. other galaxies are very far away from earth. there are no stars outside our solar system.

Explanation:

• Option 1: Driving on other planets is not a primary reason for space exploration difficulty, as space exploration involves more than planetary driving.
• Option 2: The speed of light can be measured, so this is incorrect.
• Option 3: Other galaxies are extremely distant from Earth, making it challenging to reach them with current technology, which is a valid reason for the difficulty of space exploration.
• Option 4: There are billions of stars outside our solar system, so this statement is false.

Answer:

C. Other galaxies are very far away from Earth.