Who will be the last surviving Gemini astronaut?

Who will be the last surviving Apollo astronaut? (*both* among moonwalkers and non-moonwalkers)

Will Elon Musk be a centenarian?

Will Joe Biden become a centenarian?

Which Apollo astronaut will be the last to get around without needing to use a wheelchair?

Will a human set foot on the moon whilst at least one human to have previously done so is still living?

How many Apollo moonwalkers will be alive when the next moonwalker returns to Earth?

Will anyone break the Apollo 13 crew's record for furthest people from Earth before 2030?

Will Joe Biden become a centenarian?

ISS astronauts die in space before 2026