Neil deGrasse Tyson

Neil deGrasse Tyson @neiltyson

CLARIFICATION: Tidal forces scale as the cube of distance. That’s how you get the factor 8000 = 20 x 20 x 20. No oceans yet on Earth 4-Billion years ago, but there are also crustal tides of the solid Earth, rising 8,000 times higher than the 15 inches it rises and falls today. — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

My bad. So distracted by the purity & simplicity of Apollo 11’s patch, I neglected to notice that Apollo 13’s patch also satisfies these three criteria. Maybe all space patches should be this way. https://t.co/euv0nMeZaL — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

https://t.co/zedoB4ldxf — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Hope you've enjoyed this week’s Twitter Moon-rant. I leave you with one more — for the ages... — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

We voyaged to explore the Moon, and discovered Earth for the first time. [Video: 4min 30 sec] https://t.co/jV9Kvanjzv — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

The Apollo 11 mission patch: No American flag. No space hardware. No Astronaut names. In that regard, unique among space emblems. Affirmation that walking on the Moon was an achievement of the human species, to be shared by all. https://t.co/Fw7Y7EWR1m — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Neil Armstrong. A smart, quiet, unpretentious man. Born in #Ohio, where more astronauts come from than any other state. https://t.co/y7XdDCaDMo — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Little-known Fact: The Moon doesn't orbit Earth’s center. Earth & Moon orbit a common center of mass, which is a moving spot about 1,000 miles beneath Earth’s surface along a line connecting our centers. So Earth actually jiggles while orbiting the Sun. https://t.co/MEGlqqmmj2 — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Don’t mean to boast, but @LeVarBurton once read Goodnight Moon to me — or was it a dream? [Video: 3min 15sec] https://t.co/8a4HaSIZpL — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

A Blue Moon, the second full moon in a calendar month, occurs on average every two and a half years. So “once in a blue moon” is not entirely rare. I’m just saying. — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

On turning a space program, into a space Industry. Video: [1min 40 sec] https://t.co/iWFtseDZ39 — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

If interested, every thought I’ve ever had about our past, present, and future in space. “Space Chronicles: Facing the Ultimate Frontier” [Book: 384 pgs] https://t.co/PiQrL8ct9D https://t.co/GzSJYi3ca4 — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

In the current release of @DisneyLionKing, Earthshine was accurately captured (as was damn near everything else) in a scene containing the thin crescent Moon. https://t.co/mrQsFBiGPS — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

@chrisbattenmma @joerogan Laws of physics show that Earth’s tidal forces prevent anything closer than 20x closer from coalescing, eventually falling back to Earth. — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Leonardo da Vinci first understood why you can see the outline of the unlit Moon when in a thin crescent phase. It’s Earthlight reflected back at us, and is officially called Earthshine. But I prefer to call it Moonshine. https://t.co/dg0HBpBe41 — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

@strayobject Tides are raised in the physical body of Earth as well. And they would be 8000x higher. — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Astronomically, the “New Moon” is lit only on the far side, and is thus not visible from Earth. Thereafter, the "new" Moon you see in the sky is called "waxing crescent" https://t.co/TcLtCBfZsB — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

In Jules Verne’s 1865 novel “From Earth to the Moon”, the subtitle is “in 97 hours and 20 minutes”. Close enough. It took Apollo 11 — 75 hours and 49 minutes. https://t.co/eoEJuoDYBG — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Moon Landing: July 20, 1969 No other act of human exploration ever laid a plaque saying: "We Came In Peace For All Mankind" https://t.co/dD2wQf4HhE — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Van Morrison’s song “Moondance” begins with: Well, it's a marvelous night for a moondance With the stars up above in your eyes. A sentiment that not enough of us embrace in these angry and divisive times. https://t.co/XhFsYk4wHP — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

My moon-tweets are cratering for today, but I’m guessing it's just a phase. Okay. Just one more... — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

The song “Fly Me to the Moon” also references Jupiter Mars & the Stars: Fly me to the moon Let me play among the stars And let me see what spring is like On Jupiter and Mars. FYI: Due to its axial tilt, Mars does actually experience Spring. Jupiter, not so much. — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Even though the Moon once had rivers (of Lava) flowing on it, the song “Moon River” is cosmically irrelevant. — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Lunar “seas” such as the Sea of Tranquility, where Apollo 11 landed, are broad, flat, former lakes of lava that were long ago presumed to be actual bodies of water. https://t.co/c5dXolOHfY — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

On Mining the Moon [Video: 1min 40 sec] https://t.co/GxcPXVDYqx — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

FYI: We measure the Moon’s distance with exquisite accuracy using Lasers & Telescopes combined with Moon-based mirrors placed there by Neil Armstrong during Apollo 11. https://t.co/YQzrboqf9y — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Earth is 81x the Moon’s mass but only 16x its volume. With our large, iron-metal core, we are much denser. The Moon, forged entirely from our Crust & Mantle, has hardly any Iron. https://t.co/n9YtoYsILV — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

Scary Times: A Mars-sized protoplanet in the early solar system sideswiped Earth, blasting parts of Earth’s crust & mantle into space, creating a ring of orbiting molten rock, which rapidly coalesced to form our Moon. https://t.co/mZOErcyth7 — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

When the Moon first formed, four billion years ago, it was 20x closer than it is today, 400x larger on the sky, and Tides were 8,000x higher. — PolitiTweet.org

Neil deGrasse Tyson @neiltyson

@spencer_mehl The rate is proportional to the inverse cube of the Moon’s distance. So it’s rate of spiraling away is getting slower and slower. — PolitiTweet.org