Space Exploration: Human Health and Adventure in Space

July 20, 2024 marks the 55th anniversary of the Apollo 11 lunar module Eagle landing on the Moon. The feat of sending humans to the Moon and ensuring their safe return underlines the risks and challenges of space travel. Despite setbacks, astronauts continue to push the boundaries of exploration, inspiring awe and admiration.

On July 20, 1969, the Apollo 11 lunar module Eagle landed on the Sea of Tranquility on the Moon. The next day, July 21 two humans stepped onto the Moon’s surface-first Neil Armstrong, followed by Buzz Aldrin.

AT JOHNSON SPACE CENTER, HOUSTON TEXAS, a photo of the lunar module, taken by Dr. Aletha

Humans on the Moon-July 20, 1969

More remarkable than landing a vehicle on the Moon was safely sending three humans to the Moon and returning them to Earth.

Human bodies are designed for Earth, not outer space, so taking them into space and bringing them back safely was a monumental task and grave responsibility.

And it was not accomplished perfectly- in 1967 the Apollo 1 spacecraft cabin caught fire and claimed the lives of three astronauts.

Despite the strides NASA has made in its perpetual quest to make spaceflight safer, it’s still a dangerous business. Our astronauts are stepping on top of a bomb when they climb into the capsule of a spacecraft, a bomb they trust will go off in a controlled manner.

Of the 135 space shuttle flights, two ended in disaster, claiming seven lives each.

Sam Howe Verhovek, article in National Geographic 07.2019
“If we die, we want people to accept it. We are in a risky business and the conquest of space is worth the risk of life.” astronaut Gus Grissom, who died in a fire in the Apollo 1 module

exploring the HEART of space travel

I grew up watching the space exploration adventure develop from Mercury to Gemini to Apollo and beyond and still find it fascinating. My family and I never miss a chance to tour a museum exhibit featuring space and have enjoyed visits to the Johnson Space Center in Houston, Texas, and the Kennedy Space Center near Orlando, Florida.

life size photo of the Apollo 11 crew-Armstrong, Collins, and Aldrin
I (almost) met the Apollo 11 crew at the Johnson Space Center in Houston

Moon Exploration by Apollo 11

  • Distance from Earth to Moon-238,855 miles
  • Duration of the Apollo 11 mission to the moon-8 days, 3 hours, 18 minutes
  • Top speed of ship to moon 24,000 miles per hour
  • Length from the ladder to the moon surface of Armstrong’s “one small step”- 3.5 feet

as reported in AARP magazine, June/July 2019

basalt moon rock at Johnson Space Center, Houston, TX

SPACE VEHICLE MOCKUP FACILITY AT JOHNSON SPACE CENTER

Maintaining Health in Space Exploration

These exhibits at the Adler Planetarium in Chicago, Illinois illustrate the health hazards and health maintenance facets of space exploration

A Gemini Spacecraft
Gemini-7-Surgeon phone

During space flight, a medical doctor monitored the crew’s health. They were concerned with learning,” Can humans live in space?”

They learned that people can live comfortably in space for two weeks. The cardiovascular system adapts adequately.

Gemini 7 Temperatures diagram

“You get to know each other quite well.”

(How to use the toilet in space.)

There are no toilets on a small spacecraft so an astronaut’s liquid waste went into a tube, vented to the outside. Solid waste went into a plastic fecal collection bag, and then stored behind their seats.

The Astronauts- exploring Adventure in Space

When I flew on the space shuttle and the space station, I would look at the moon…I didn’t feel like I missed something by not going there. Just knowing that people got there-regular people, very brave ones-it makes it so that I’m there a little bit.

Humans pulled this off. We can do incredible things. Impossible things.

Cady Coleman, retired astronaut , from AARP magazine

Laurel Salter Clark-Physician Astronaut

On February 1, 2003, Dr. Laurel Salter Clark and the rest of the STS-107 crew perished during re-entry as Space Shuttle Columbia broke up over Texas en route to a landing in Florida. They amassed 15 days, 22 hours, and 20 minutes in space, giving their lives in service to their country and the space program.

Please visit this previous post to learn more about Dr. Clark.

exploring the HEART of health in space

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Dr. Aletha

photo of Dr. Aletha by Raymond Oglesby