Join us as we explore the worlds of our solar system.

Milky Way Galaxy
NASA Solar System retweeted
Looking for a cozy weekend activity?🍂 Cuddle up with your favorite fuzzy blanket & explore the amazing world of astrobiology with @NASA’s Astrobiology Graphic Histories.🧬🌌 The series of 9 graphic novels are now available on Comics Plus! science.nasa.gov/astrobiolog…
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NASA Solar System retweeted
You’ve seen the photos. Now hear the story behind them.🌕 On this week’s #HWHAP, hear never-before-released recordings from the Artemis II crew’s lunar flyby as lunar scientists Juliane Gross and Aaron Regberg unpack what the astronauts saw and why it matters. go.nasa.gov/4rLgq0D
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NASA Solar System retweeted
What’s up for October? 🪐 See Saturn at opposition, catch the Orionid meteor shower, and watch the Moon pass close to the Pleiades, also known as the Seven Sisters.
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NASA Solar System retweeted
Can you hear me now? As @NASA prepares for a long-term human presence on the Moon, reliable communications systems will be critical. Our 2027 Human Lander Challenge invites college teams to develop innovative lunar communications solutions. Learn more: go.nasa.gov/4yKHakR
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NASA Solar System retweeted
NASA has selected three new science investigations through its PRISM program to prepare for humanity’s first lunar outpost, @NASAMoonBase. From monitoring hazards to finding natural shelters and mapping water ice, take a look at the science paving the way for lunar exploration: go.nasa.gov/4iS0h7k
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How do you get a probe ready for the heat of Venus? Put it in a furnace.🔥 From Aug. 28 to Sept. 10, a model of our DAVINCI probe went through six cycles to 869°F (465°C), each matched to its planned hour-long descent. It came out unscathed: go.nasa.gov/3VYwVKR
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Searching for clues about Mars’ ancient past… right here on Earth. Our Perseverance rover found greenish "reduction spots" on Mars. On Earth, spots like these can be formed by microbes, so NASA scientists headed to Scotland to take a closer look. go.nasa.gov/4jtYMwe
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NASA Solar System retweeted
How do we respond when we detect an asteroid that could pose a threat to Earth? Follow the story behind a recent real-world test in our newest documentary, Planetary Defenders: This Is Not an Exercise, now streaming for free on NASA+. go.nasa.gov/4AUCQ3Z
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Gorgeous images of our home world from the Juice spacecraft today as it flew by Earth en route to Jupiter. Congratulations to the entire team! Our Europa Clipper mission will perform a similar gravity assist maneuver in December. science.nasa.gov/mission/eur…
A successful Earth flyby improves Juice’s course to Jupiter. Earlier today, @ESA_Juice flew just 8640 km above the Indian Ocean and snapped these images with its onboard monitoring cameras. 1️⃣Africa, by Juice monitoring camera 2️⃣Madagascar, by Juice NavCam 3️⃣Moon, by Juice NavCam
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NASA Solar System retweeted
Get ready to wave to an asteroid 👋🪨 In 2029, asteroid Apophis will swing by Earth, passing safely about 20,000 miles from the surface. The OSIRIS-APEX mission will meet up with the asteroid shortly after, to map the surface and study its chemical makeup.
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NASA Solar System retweeted
The seasons are changing, and the Harvest Moon is here. 🌕🍂 This is the full Moon that occurs closest to the fall equinox. Watch for it rising in the east after sunset on Saturday.
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See what the asteroid samples have revealed so far, and learn more about OSIRIS-APEX, the follow-on to OSIRIS-REx, which will study the asteroid Apophis after its rare close encounter with Earth in 2029. science.nasa.gov/mission/osi…
Stuck the landing! Three years ago today, the OSIRIS-REx spacecraft released a sample capsule at the edge of Earth’s atmosphere to land perfectly upright in the Utah desert. The capsule held a record amount of pristinely captured rocks and dust from asteroid Bennu. Scientists have studied the extraterrestrial sample, learning it contains all the ingredients key to life.
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Make your own discoveries about the eighth planet at science.nasa.gov/neptune/
Whoomp there it is! After two astronomers, Urbain Le Verrier and John Couch Adams, independently calculated its predicted location, Johann Gottfried Galle found the planet Neptune 180 years ago on Sept 23, 1846. In 1989 when Voyager 2 became the first—and so far only—spacecraft to visit Neptune, it took thousands of images of Neptune, its rings, and its moons, including this one.
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NASA Solar System retweeted
Layered beauty 😍 The Arabia Terra region on Mars has deposits that preserve a record of the planet’s ancient climate. The rhythmic nature of the layers could be due to cyclic processes, such as dust storms, perhaps involving groundwater. 1/2
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A tiny amoeba broke complex life’s heat record and could broaden the search for habitable worlds. 🔥 NASA-supported researchers found the first known eukaryote able to reproduce at 145°F (63°C), hotter than scientists thought complex cells could withstand. go.nasa.gov/4hg7prz
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Extreme heat can damage DNA, unravel proteins, and break down the membranes that organize complex cells. The “fire amoeba” has ways to protect all three. Studying these survival strategies helps scientists better understand where organisms could endure on other worlds.
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NASA Solar System retweeted
Depending on your locale, equinoxes can be seen as bearers of longer nights and gloomy weather, or promising beacons of milder temperatures and more sunlight. Today, we mark the autumnal equinox - the official start of fall in the Northern Hemisphere. 🔗 go.nasa.gov/4hF49Y6
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NASA Solar System retweeted
As of Sept. 22, it's officially fall in the Northern Hemisphere…while spring begins in the Southern Hemisphere. 🍁 🌎 💐 That's the September equinox, when the Sun is directly above Earth's equator and day and night are close to equal in length around the world.
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NASA Solar System retweeted
Sometimes following the water can lead to surprising places💧 A new study of data from Perseverance reveals that rocks in Jezero Crater were shaped by a complex sequence of ancient lakes, groundwater systems, and hydrothermal fluids. 1/2
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We love a Moon appreciation moment 🌎🌓🎉     It’s International Observe the Moon Night! People all over the world are observing the Moon together today, and you’re invited.     Find an event near you, or register to observe on your own or with friends, at go.nasa.gov/ObserveTheMoon
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