#OTD in 1906, Arizona’s Petrified Forest was established as a national monument and later designated as a national park in 1962.

The 225-million-year-old petrified logs located in the park were brought to the surface by movements in Earth’s crust.

https://t.co/x9GouUQAsU https://t.co/CgPgFmrlg5

NASA Landsat

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Our Image of the Week this time celebrates the second anniversary of the launch of #Meteosat-12! 🥳

The satellite (formerly known as MTG-I1) took to the skies #OTD in 2022.

Find out more about the image below here: https://t.co/es4GsGXgES https://t.co/hA5l5rczr3

EUMETSAT

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RT @NASA_LSP: 🚀Happy Launch-iversary SWOT!

#OTD in 2022, the Surface Water and Ocean Topography spacecraft became LSP’s 101st primary mission when it lifted off from Vandenberg Space Force Base on a SpaceX Falcon 9 rocket.

Did you know that SWOT recently collected data on a tsunami in Greenland that generated a seismic rumble which reverberated around the world for nine days!

https://t.co/VvxSK3lgMQ

NASA Climate

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RT @NASAhistory: Here's to 25 Terra-ific years! 🥂

#OTD in 1999, Terra, the flagship satellite of the @NASAEarth Observing System, was launched into space. It has been continuously collecting data ever since to help us understand how Earth is changing over time.

Happy launchiversary Terra!! https://t.co/wtIb4NISGh

NASA Earth

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#OTD 20 years ago, Visible images from @NOAASatellites #GOES12 captured the signature of snow cover associated with the first White Christmas on record across parts of extreme northeast Mexico & southern Texas: https://t.co/YUVvi9k9qX @NWSBrownsville @NWSCorpus @NWSHouston #TXwx https://t.co/Zx4oACSH66

UW-Madison CIMSS

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#OTD in 2004, a massive 9.1 magnitude #Earthquake struck off the coast of northern Sumatra, #Indonesia. The event unleashed a devastating #Tsunami, caused widespread destruction, and became one of the deadliest disasters in modern history. Learn more here: https://t.co/jDaD3gVRpb https://t.co/YgEp1LKFh3

USGS Landsat

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#OTD in 1975, @NASA announced that the Earth Resources Technology Satellite (ERTS) program had been renamed #LANDSAT. ERTS-1 was renamed Landsat 1. ERTS-B, the second satellite in the program, would be called Landsat 2 upon launch just eight days later, on January 22, 1975. https://t.co/weuiS6gzdr

USGS Landsat

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Happy launch anniversary to Jason-3! 🚀
The ocean altimetry satellite was launched #OTD in 2016. Jason-3 carries a radar altimeter to monitor global sea level, wind speed at the ocean surface and significant wave height from 1,336 km above Earth 🛰️🌊: https://t.co/0GSTLcKc9A https://t.co/qYr8s2f0Js

EUMETSAT

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#OTD in 1975, #Landsat 2—originally known as ERTS-B—was launched into space from #VandenbergAFB. This event marked a crucial step in #EarthObservation and signified the continuation of a successful satellite #RemoteSensing program. Learn more here: https://t.co/NYt48gLucr https://t.co/eQPSQ7INpV

USGS Landsat

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#OTD in 2013, #Landsat 8—originally known as the Landsat Data Continuity Mission—was launched into space from #Vandenberg Space Force Base. Since then, it has made over 63,000 orbits and added more than 3 million Level-1 products to the archive. More here: https://t.co/Ibtd8iTBu1 https://t.co/1ZRf9R78jy

USGS Landsat

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