Which list gives key events regarding the exploration of space in the correct order, beginning with the earliest.

The correct order of key events regarding the exploration of space, beginning with the earliest, is:

**first humans in space, first humans on the moon, first space shuttle flights.**

Here’s the breakdown:

1. **First humans in space** - This refers to Yuri Gagarin's flight on April 12, 1961.
2. **First humans on the moon** - This refers to the Apollo 11 mission, where Neil Armstrong and Buzz Aldrin landed on the moon on July 20, 1969.
3. **First space shuttle flights** - The first space shuttle, Columbia, was launched on April 12, 1981.

This sequence accurately reflects the chronological order of these significant milestones in space exploration.

are you sure???

Yes, I am sure. Here's the clarification of the key events regarding space exploration in chronological order:

1. **First humans in space**: This was achieved by Yuri Gagarin on April 12, 1961, when he became the first human to orbit Earth.

2. **First humans on the moon**: This milestone occurred during the Apollo 11 mission on July 20, 1969, when Neil Armstrong and Buzz Aldrin became the first and second humans to set foot on the lunar surface.

3. **First space shuttle flights**: The first flight of the Space Shuttle program was STS-1, which launched on April 12, 1981.

So the sequence **first humans in space, first humans on the moon, first space shuttle flights** is indeed the correct order of events. If you have any specific questions or concerns about the timeline, feel free to ask!