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Before leaving the Moon, Apollo 15 astronaut Dave Scott performed an experiment #OTD in 1971, dropping a hammer and feather simultaneously in the Moon's airless environment. See the result for yourself ⬇️

NASA History Office

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93,063 次观看 • 2 年前 •via X (Twitter)

科学技术新闻政治教育 #OTD

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10 条评论

Steven's Universe 的头像

Steven's Universe2 年前

"How about that!"

HOUmanitarian ™ 的头像

HOUmanitarian ™2 年前

It would be great if y’all could remaster this. The video quality seems to get worse over the years.

Football and others 的头像

Football and others2 年前

Obviously, the correct answer is they fall at the same time, but reflexively the sight of a feather falling like a rock is surprising.

Oso Negro Mk2 的头像

Oso Negro Mk22 年前

I used Scott's demo to challenge my students to simulate the acceleration of the moon's gravity in the classroom. Here is one of our efforts. My editing of the video isn't the greatest.

Mark Ferrell 的头像

Mark Ferrell2 年前

Watch the Feather Twitch/Move when he gestured with the Hammer. Appears to me that there IS a Filament/String connected to each . I have been searching for this exact film piece for 30 years since becoming aware. Fake, right?

Al's Café Americain™ 的头像

Al's Café Americain™2 年前

Gravitational physics is beautiful!!

Lucius 的头像

Lucius2 年前

Don't you love the later Apollo missions? (And one of my best friends teaches mechanical physics - I don't have if that's the correct translation - in Pisa. Every physicist I have known was quite crazy, which is great with me.)

Julia Smith🍉🍉🍉 #CeasefireNOW 的头像

Julia Smith🍉🍉🍉 #CeasefireNOW2 年前

Even though I know what will happen it's still mind blowing

GPS-PIE 的头像

GPS-PIE2 年前

I saw this on the TV at the time. It was my first ever science lesson. I was fascinated from then until now. Thank you to all the hard working Americans who made it possible for the whole world to see this amazing spectacle.

DCC STEM 的头像

DCC STEM2 年前

@NASAArtemis @dailystem

相关视频

Commander Dave Scott of Apollo 15 validates Galileo's theory on the Moon by dropping a hammer and a feather, proving that objects fall at the same speed, independent of their mass.

Commander Dave Scott of Apollo 15 validates Galileo's theory on the Moon by dropping a hammer and a feather, proving that objects fall at the same speed, independent of their mass.

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During the Apollo 15 mission, astronaut David Scott dropped a hammer and a feather at the same time and they hit the ground together On Earth the feather would fall slowly because of air drag, but on the Moon, with nothing to slow it down, both objects fall purely under gravity and land simultaneously The Moon has almost no atmosphere, which means there’s essentially no air resistance Galileo theorized this in the 1600s Apollo 15 proved it on live TV

During the Apollo 15 mission, astronaut David Scott dropped a hammer and a feather at the same time and they hit the ground together On Earth the feather would fall slowly because of air drag, but on the Moon, with nothing to slow it down, both objects fall purely under gravity and land simultaneously The Moon has almost no atmosphere, which means there’s essentially no air resistance Galileo theorized this in the 1600s Apollo 15 proved it on live TV

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During the final Apollo 15 moonwalk in 1971, astronaut David Scott proved Galileo's 400+ year old theories on gravity, by dropping two objects of different masses and showing that they fall at the same rate with no air resistance.

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During Apollo 15, astronaut David Scott dropped a feather and a hammer on the lunar surface to show that without meaningful air resistance, both fall at the same rate. It became one of the clearest demonstrations of gravity ever filmed on another world. And now, with Artemis II targeted for tomorrow, NASA is preparing to send astronauts back around the Moon in the next chapter of lunar exploration.

During Apollo 15, astronaut David Scott dropped a feather and a hammer on the lunar surface to show that without meaningful air resistance, both fall at the same rate. It became one of the clearest demonstrations of gravity ever filmed on another world. And now, with Artemis II targeted for tomorrow, NASA is preparing to send astronauts back around the Moon in the next chapter of lunar exploration.

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A legendary experiment on the moon, a hammer and feather dropped from the same height, reach the lunar surface simultaneously without air resistance. All objects fall at the same rate (regardless of mass) as predicted by Galileo, over 400 years earlier.

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Apollo 15 Landing 16mm Footage - Upscaled by Moonpans This footage was captured on the 16mm DAC camera from the Apollo 15 LM window during landing on the Moon in July 1971. Original footage by Apollo Flight Journal Upscaled and audio synchronisation by Moonpans

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One of the most inspiring moments in human history NASA astronaut Neil Armstrong’s words echoed across the world #OTD in 1969 as he became the first person to set foot on the surface of the Moon. The culmination of years of united effort, the Apollo 11 Moon landing remains a testament to our capacity to do hard things.

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