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Neil Armstrong's Giant Leap

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Neil Armstrong -- astronaut, engineer, professor, Navy pilot, and first man on the moon -- has died at the age of 82. He is best known for the words he spoke just after he set foot on the moon. Contrary to popular belief, Armstrong said (emphasis added): "That’s one small step for a man, one giant leap for mankind." That word "a" was garbled in the satellite feed heard by the world. Regardless of our ability to hear him, Armstrong was a man of powerful words. Here are a few more to remember him by.

The Moon Plaque

Apollo 11 plaque

Armstrong and fellow astronaut Buzz Aldrin left a plaque on the ladder of their moon lander, Eagle. The plaque read: "Here men from the planet Earth / First set foot upon the Moon / July 1969 A.D. / We came in peace for all mankind." It bore the signatures of the Apollo 11 crew members and President Nixon. He also left a small silicon disc bearing tiny messages of goodwill from various world leaders, as well as the names of various American dignitaries. You may enjoy this video of Armstrong placing the plaque and then reading its text to the world (his reading starts around 1:30):

In addition to that plaque, the messages of goodwill on the disc were mixed. Most were fairly bland messages of congratulations. But the message from Poland made it clear that the Cold War was in full swing:

"Although we are not suggesting any message from the Polish Head of State, please be assured that the achievements of the U.S. astronauts are followed by us with great interest, appreciation and best wishes for the success in their endeavor."

Sincerely,
Jorzy Michalowski
Ambassador, Poland

And in this short clip at the Apollo 11 40th anniversary celebration in 2009, Armstrong discusses how the space race functioned politically. "I'll not assert that it was a diversion which prevented a war, but nevertheless, it was a diversion."

The Congressional Gold Medal

Armstrong was awarded a Congressional Gold Medal on July 21, 2009. In this video, he shares some memories of the journey. He starts the speech: "Thank you, Mr. Chairman. I am in the position of a pilot without his checklist, so I'll have to wing it. ... [Prior to the Apollo missions,] no one knew what kind of person could be persuaded to take the trip. Prisoners were suggested. Soldiers could be ordered. Photographers could take pictures -- and they're expendable. Doctors understood the limits of human physiology. Finally, both sides picked pilots." Watch the rest for an explanation of how the Apollo missions worked.

Tranquility Base & "About to Turn Blue"

Armstrong suits up for the Apollo 11 launch on July 16, 1969Eagle's touchdown was tricky. The autopilot was sending the lander into a crater that Armstrong didn't like the looks of, so he took manual control and steered the vehicle to a new location, which he dubbed Tranquility Base -- apparently the first time Mission Control had heard the name. With seconds of fuel remaining (and people around the world holding their breath), Armstrong landed and announced the name of the first place where humans set foot on the Moon. Capcom Charlie Duke was audibly relieved, and just a bit flustered. The exchange:

Armstrong: "Houston, Tranquility Base here. The Eagle has landed."

Duke: (Momentarily tongue-tied) "Roger, Twan...(correcting himself) Tranquility. We copy you on the ground. You got a bunch of guys about to turn blue. We're breathing again. Thanks a lot."

You can read the full lunar landing transcript from NASA, including several audio clips in MP3 format.

The BBC Interview

In 1970, Armstrong was interviewed by the BBC about what it was like to be on the Moon. "I'm quite certain that we'll have such [lunar] bases in our lifetime, somewhat like the Antarctic stations and similar scientific outposts, continually manned."

The 60 Minutes Interview

Armstrong was a very private man. Here's a rare profile at age 75 on 60 Minutes. Highlights: he got his pilot's license at 15 -- before his driver's license; video showing his last-minute ejection from a near-fatal test flight (after which he walked back to his office and finished some paperwork); the dicey last-second landing of Eagle (and laughing with Walter Cronkite remembering that landing).

The biography mentioned in the video above is First Man: The Life of Neil A. Armstrong.

NASA's Remembrance

NASA has posted an obituary, including this quote from Apollo 11 astronaut Michael Collins (the man who did not get to walk on the Moon during that mission):

"He was the best, and I will miss him terribly." -- Michael Collins, Apollo 11 command module pilot.

NASA also posted this image showing Armstrong on the Moon. Most of the iconic astronaut-on-the-Moon photos are actually of Buzz Aldrin, taken by Armstrong. But this is the man himself:

Neil Armstrong on the Moon

A Glamour Shot

Here's Neil Armstrong in a Gemini G-2C training suit. Photo courtesy of NASA, via Wikipedia.

Neil Armstrong in a Gemini G-2C training suit

New York Times Archival Coverage

The New York Times has posted archival images and text from their coverage of the first moonwalk, with its famous, gigantic "MEN WALK ON MOON" headline. You may recall The Onion's profane-but-true spoof (warning: curse words, lots of 'em!) of that page. Here's a nice bit from the real NYT coverage:

Tentative Steps Test Soil

Mr. Armstrong's initial steps were tentative tests of the lunar soil's firmness and of his ability to move about easily in his bulky white spacesuit and backpacks and under the influence of lunar gravity, which is one-sixth that of the earth.

"The surface is fine and powdery," the astronaut reported. "I can pick it up loosely with my toe. It does adhere in fine layers like powdered charcoal to the sole and sides of my boots. I only go in a small fraction of an inch, maybe an eighth of an inch. But I can see the footprints of my boots in the treads in the fine sandy particles.

After 19 minutes of Mr. Armstrong's testing, Colonel Aldrin joined him outside the craft.

The two men got busy setting up another television camera out from the lunar module, planting an American flag into the ground, scooping up soil and rock samples, deploying scientific experiments and hopping and loping about in a demonstration of their lunar agility.

They found walking and working on the moon less taxing than had been forecast. Mr. Armstrong once reported he was "very comfortable."

And people back on earth found the black-and-white television pictures of the bug-shaped lunar module and the men tramping about it so sharp and clear as to seem unreal, more like a toy and toy-like figures than human beings on the most daring and far-reaching expedition thus far undertaken.

Armstrong Smiles After a Walk on the Moon

Finally, here's a photograph taken by Aldrin of Armstrong, after they returned from their walk on the Moon. That grin is infectious -- you can see the exuberant sense that "we did it" is on his face, along with the weariness of how hard it was. But we went to the Moon not because it was easy, but because it was hard. Rest in tranquility, Neil Armstrong.

Armstrong after Lunar EVA

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European Space Agency Releases First High-Res Land Cover Map of Africa
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Land Cover CCI, ESA

This isn’t just any image of Africa. It represents the first of its kind: a high-resolution map of the different types of land cover that are found on the continent, released by The European Space Agency, as Travel + Leisure reports.

Land cover maps depict the different physical materials that cover the Earth, whether that material is vegetation, wetlands, concrete, or sand. They can be used to track the growth of cities, assess flooding, keep tabs on environmental issues like deforestation or desertification, and more.

The newly released land cover map of Africa shows the continent at an extremely detailed resolution. Each pixel represents just 65.6 feet (20 meters) on the ground. It’s designed to help researchers model the extent of climate change across Africa, study biodiversity and natural resources, and see how land use is changing, among other applications.

Developed as part of the Climate Change Initiative (CCI) Land Cover project, the space agency gathered a full year’s worth of data from its Sentinel-2A satellite to create the map. In total, the image is made from 90 terabytes of data—180,000 images—taken between December 2015 and December 2016.

The map is so large and detailed that the space agency created its own online viewer for it. You can dive further into the image here.

And keep watch: A better map might be close at hand. In March, the ESA launched the Sentinal-2B satellite, which it says will make a global map at a 32.8 feet-per-pixel (10 meters) resolution possible.

[h/t Travel + Leisure]

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Scientists May Have Found the Real Cause of Dyslexia—And a Way to Treat It
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iStock

Dyslexia is often described as trying to read letters as they jump around the page. Because of its connections to reading difficulties and trouble in school, the condition is often blamed on the brain. But according to a new study published in Proceedings of the Royal Society B, the so-called learning disability may actually start in the eyes.

As The Guardian reports, a team of French scientists say they've discovered a key physiological difference between the eyes of those with dyslexia and those without it. Our eyes have tiny light-receptor cells called rods and cones. The center of a region called the fovea is dominated by cones, which are also responsible for color perception.

Just as most of us have a dominant hand, most have a dominant eye too, which has more neural connections to the brain. The study of 60 people, divided evenly between those with dyslexia and those without, found that in the eyes of non-dyslexic people, the arrangement of the cones is asymmetrical: The dominant eye has a round, cone-free hole, while the other eye has an unevenly shaped hole. However, in people with dyslexia, both eyes have the same round hole. So when they're looking at something in front of them, such as a page in a book, their eyes perceive exact mirror images, which end up fighting for visual domination in the brain. This could explain why it's sometimes impossible for a dyslexic person to distinguish a "b" from a "d" or an "E" from a "3".

These results challenge previous research that connects dyslexia to cognitive abilities. In a study published earlier this year, people with the condition were found to have a harder time remembering musical notes, faces, and spoken words. In light of the new findings, it's unclear whether this is at the root of dyslexia or if growing up with vision-related reading difficulties affects brain plasticity.

If dyslexia does come down to some misarranged light-receptors in the eye, diagnosing the disorder could be as simple as giving an eye exam. The explanation could also make it easy to treat without invasive surgery. In the study, the authors describe using an LED lamp that blinks faster than the human eye can perceive to "cancel out" one of the mirror images perceived by dyslexic readers, leaving only one true image. The volunteers who read with it called it a "magic lamp." The researchers hope to further experiment with it to see see if it's a viable treatment option for the millions of people living with dyslexia.

[h/t The Guardian]

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