#OnThisDay in 1971 #Mariner 9 arrived at #Mars and made its orbital insertion, starting a short but highly impactful mission around the Red Planet. The first spacecraft to orbit another planet, Mariner 9 successfully mapped 85% of the surface in high resolution.

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Join us in congratulating Lauren Edgar on becoming part of NASA’s 2025 Astronaut Candidate Class! Before joining NASA, Lauren Edgar was a research geologist at our USGS Astrogeology Science Center and has 17+ years of experience supporting Mars rover missions.

Join us this weekend for Snook's Science in the Park! 10 am - 2 pm, Saturday, Sept. 20 at Wheeler Park in Flagstaff Astrogeology and other USGS science centers will have demonstrations, activities, and free giveaways! Fun for the whole family! #FlagSciFest #SciFest #STEMOutreach

🎨🔬 Art meets science! Join us for The Art of Inquiry exhibition—where FALA students present original artwork inspired by USGS science! #FlagstaffSciFest 📅 Mon, Sept 22 | 🕔 5 PM 📍 USGS Astrogeology, 2255 N. Gemini Dr. 🎟️ Free & open to the public! 👉 https://t.co/7u7KZQo5SD

Happy #CloudAppreciationDay! Clouds are an important part of many atmospheres, and sometimes makes observing the surface more difficult. Astrogeology studies many surface-atmosphere interactions, learn more here: https://t.co/tThmCZFYZR

Mark your calendars! The Flagstaff Festival of Science starts next week! There are a bunch of events hosted by Astrogeology so follow this space to get all the updates. Check out the calendar to find events you're interested in: https://t.co/Qzz5pl12B3 #SciFest #FlagstaffSciFest

Happy #NationalPreparednessMonth! What Natural Hazards are there around you? Are you prepared in case of an emergency? We all need to prepare for different things, but Astrogeology and the PLANETS team are here to help with some examples! #NaturalHazard #Preparedness #Safety

Mars Curiosity has started to investigate the main exposure of the boxwork structures! What was once a distant target is now on our doorstep, read more about it here: https://t.co/ogJ2PkXO49 #Mars #MSL #MarsRover #Curiosity #MarsCuriosity

#OnThisDay in 1975 the Viking-1 Orbiter launched to Mars with an orbiter and lander, on a mission to be the first spacecraft to land on Mars. Enjoy this beautiful color mosaic of Mars, using images from the Viking-1 and Viking-2 orbiters. https://t.co/3wNMFv9TNo

#OnThisDay in 1966, Lunar Orbiter entered the Moon's orbit. The Lunar Orbiter was the first American spacecraft to orbit the Moon, and later provided us the first image of Earth from a different planetary body (shown here). Find Lunar Orbiter data here: https://t.co/yGuvZYwrFv

#OnThisDay in 1966, Lunar Orbiter entered the Moon's orbit. The Lunar Orbiter was the first American spacecraft to orbit the Moon, and later provided us the first image of Earth from a different planetary body (shown here). Find Lunar Orbiter data here: https://t.co/yGuvZYwrFv

#DidYouKnow we have a Mars Curiosity blog? Scientists working on Rover Operations provide updates, insights, and future plans for what the Rover is doing and where it's headed! Check it out ➡️ https://t.co/hdv6P95LEG #Blog #News #Curiosity #Rover #Mars #MSL #MarsRover

Today is the Mars #Curiosity Rover's Landiversary. Curiosity started roving in 2012 and the science continues! Check out this article we wrote, that we're sure will need updating soon! https://t.co/73MHw0qdEV #MSL #MarsRover #Mars #NASA #JPL #Martian #MarsExploration

Decorating your classroom? Make your own Mars globe using maps from the USGS and NASA! The full resolution images at the link belowcan be used to make your own 12-inch globe! https://t.co/lFwptpKkKM #ClassroomDecor #Teaching #Decor #BackToSchool

Venus is often called "Earth's twin" because it's a similar size, mass, and composition to Earth. That atmosphere sure is different, though and makes it difficult to see what's on the surface! Explore Venus on the Astropedia! https://t.co/Ros6PhnIW7

Happy anniversary of the Apollo 15 landing! Don't miss out on these awesome interactive maps of Apollo 15, 16, and 17! Check them out here: https://t.co/UTKL1o37Ih #Apollo #Apollo15 #Apollo16 #Apollo17 #MoonLanding #ArtemisGeneration #NASAHistory #ExploreTheMoon #MoonMaps

#OnThisDay in 1969, Apollo Astronauts Neil Armstrong and Buzz Aldrin landed on the Moon. This panorama was collected by Neil Armstrong from a spot east of the landing module while Buzz Aldrin was unloading the science packages. Get the full panorama here: https://t.co/vH6WxQKRrH

#OnThisDay in 1969, Apollo Astronauts Neil Armstrong and Buzz Aldrin landed on the Moon. This panorama was collected by Neil Armstrong from a spot east of the landing module while Buzz Aldrin was unloading the science packages. Get the full panorama here: https://t.co/vH6WxQKRrH

Today is International Moon Day, commemorating the lunar landing in 1969. Astrogeology was involved with many aspects of the Apollo missions. Check out this Report, documenting Astrogeology activities from the beginning to end of Project Apollo. https://t.co/qyqXm24yj1 #Apollo