Profile picture
Ian Kluft @ikluft
, 7 tweets, 8 min read Read on Twitter
“Earthrise: A Video Reconstruction” is #NASA #astronomy picture of the day by @apod/@USRAedu… Apollo 8’s iconic photo “Earthrise” was taken 50 years ago; 4K HD animation shows astronauts’ view using NASA LRO data of lunar surface
“Earthrise in 4K” is a 50th anniversary commemoration of the 1968 #Earthrise image during Apollo 8, and description how the rendering was made with NASA LRO imagery/data taken since 2009, by @NASA/@NASAGoddard/@USRAedu #astronomy #Apollo50 #Apollo8 #Moon
#Apollo8 was historic for 1st time humans left Earth and orbited the Moon. Apollo was intended as Cold War competition with Soviets. Starting with #Earthrise photo and many other observations, we found we had much to learn about Earth there. #astronomy #space #history
Example of what we learned about Earth from going to the Moon: lunar rocks have the same isotopes as Earth. This means the Moon came from material in the Earth, not as a separately-formed solar system body captured into Earth orbit. Led to “Giant Impact” theory. #space #astronomy
Example of what we learned about Earth from going to the Moon: lunar surface geology is primarily driven by asteroid impacts, not volcanoes as originally thought. Earth & Moon are in same space together: upon further study we realized Earth has impact craters too. #space #geology
The scientific learning process probably couldn’t have gone in any other order than noticing we needed to search for hazardous Earth-crossing asteroids until after we had been to the Moon and learned about impacts there. #Apollo50 #astronomy #asteroid #LowFlyingRocks
"We came all this way to explore the Moon, and the most important thing is that we discovered the Earth." - #Apollo8 astronaut Bill Anders (who took the famous #Earthrise photo) #Apollo50 #NASA #space #history
Missing some Tweet in this thread?
You can try to force a refresh.

Like this thread? Get email updates or save it to PDF!

Subscribe to Ian Kluft
Profile picture

Get real-time email alerts when new unrolls are available from this author!

This content may be removed anytime!

Twitter may remove this content at anytime, convert it as a PDF, save and print for later use!

Try unrolling a thread yourself!

how to unroll video

1) Follow Thread Reader App on Twitter so you can easily mention us!

2) Go to a Twitter thread (series of Tweets by the same owner) and mention us with a keyword "unroll" @threadreaderapp unroll

You can practice here first or read more on our help page!

Did Thread Reader help you today?

Support us! We are indie developers!

This site is made by just three indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member and get exclusive features!

Premium member ($30.00/year)

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!