Answer:It must follow a closed orbit around a star. -must be true for the object they've found to qualify as a planet.
Explanation:
Answer:
The correct answer is "3. The statement doesn't make sense. Even if NASA could build a spaceship that traveled close to the speed of light, it would take tens of thousands of years to get into the halo and then the same time for image to get back to Earth."
Essentially, some cities can grow in a "spreading out manner," until they eventually hit their respective municipal borders. However, once a city cannot grow laterally anymore, they grow upwards, this is expressed as the buildings we see in urbanized areas throughout the world.
That would be a Love wave. Rayleigh waves are up and down
