Definition: In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
Input: Article: A rocket began countdown . It was a common sound in the 1960s. But this was not just another countdown. It was the beginning of a historic event. It was the countdown of Apollo 11 -the space fligh that would carry men to the first landing on the moon. In the spaceship at the top of the rocket were three American astronauts whose names would soon be known around the world: Neil Armstrong. Edwin Aldrin and Michael Collins. Neil Armstrong was the commander of the spaceship. Edwin Aldrin was the pilot of the moon lander. The astronauts gave it the name the Eagle. Michael Collins was the pilot of the command module , Columbia. He would wait in orbit around the moon while Armstrong and Aldrin landed and explored the surface. On Earth, all activity seemed to stop. President Richard Nixon gave federal government workers the day off to watch the moon landing on television. Around the world, 500 million people watched the television report. Countless millions more listened on their radios. Armstrong and Aldrin started the lander rocket engine. It slowed the spacecraft and sent it down toward the landing place. It was in an area known as the "Sea of Tranquility ". The moon lander, controlled by a computer, dropped toward the airless surface of the moon. 140 meters from the surface, the astronauts look control of the lander from the computer. They moved the Eagle forward, away from a very rocky area that might have caused a difficult landing. It took the astronauts more than three hours to complete the preparations for leaving the lander. It was difficult - in the Eagle's small space - to get into space suits that would protect them on the moon's surface. Finally, Armstrong and Aldrin were ready. They opened the door. Armstrong went out first and moved slowly down the ladder. At 2:56 on July 20th, 1969, Neil Armstrong put his foot on the moon. "That's one small step for man,"he said, "one giant leap for mankind."
Answer: Because the first landing on the moon attracted the world's attention.
Output:
Why did the three American astronauts on Apollo 11 soon become famous around the world?