@NASASolarSystem

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

 Milky Way Galaxy
science.nasa.gov/solar-system
Joined June 2008
  • Tweets9.8K
  • Following140
  • Followers3M
3.3KMedia
NASA Solar System retweeted
NASA Artemis
@NASAArtemis17h
Two scientists. One unforgettable view of our planet. What's it like to see the Artemis II Earthrise image through the eyes of a lunar scientist? How about an oceanographer? Jacob Richardson & Ivona Cetinic are here to tell us. Explore Artemis II data: go.nasa.gov/Artemis2LunarSci…
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NASA Solar System retweeted
NASA JPL
@NASAJPLOct 20
The Orionid meteor shower, created by tiny pieces of debris from Halley's Comet, peaks on the night of Oct. 21 - 22. Your best chance to see them comes a few hours before dawn, after the bright Moon sets. Find a dark location, give your eyes time to adjust, and look up.
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NASA Solar System retweeted
NASA Science
@NASAScience_Oct 20
Have a research idea that could advance NASA science? 🔬 NASA plans to release ROSES-27 by January 2027, with over 50 research opportunities spanning astrophysics, Earth science, planetary science, heliophysics, space biology and more. Start planning: go.nasa.gov/489ZKqw
A graphic with NASA's "meatball" logo, which consists of a blue circle dotted with stars and crossed by a red, V-shaped swoosh. "NASA" is written in large white text on the circle, which is set against a solid black background. Credit: NASA

ALT A graphic with NASA's "meatball" logo, which consists of a blue circle dotted with stars and crossed by a red, V-shaped swoosh. "NASA" is written in large white text on the circle, which is set against a solid black background. Credit: NASA

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NASA Solar System retweeted
NASA Mars
@NASAMarsOct 19
The MMX spacecraft carries two pieces of NASA hardware: The MEGANE instrument will be key to revealing the origin of Mars’s moons by measuring their elemental composition. The P-Sampler demonstration will advance capabilities for surface material acquisition in low gravity. ½
An artist’s concept of JAXA’s MMX spacecraft at Mars. Credit: JAXA

ALT An artist’s concept of JAXA’s MMX spacecraft at Mars. Credit: JAXA

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NASA Solar System retweeted
Learn With NASA
@LearnWithNASAOct 19
Registration is open for the NASA TechLeap Prize: Orbital Clarity Challenge! Brainstorm your ideas to advance orbital drag measurements for safer, more predictable satellite flight paths.🛰️ To find challenge guidelines and registration info, visit: nasa.gov/directorates/stmd/p…
A web of satellite flight paths criss-cross around Earth

ALT A web of satellite flight paths criss-cross around Earth

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NASA Solar System retweeted
NASA Science
@NASAScience_Oct 16
Day meets night at the lunar terminator. 🌗 The @NASAArtemis II crew highlighted this shadowy frontier during their close encounter in April. Now it’s your turn to explore! No spaceship needed.
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NASA Solar System retweeted
NASA Space Alerts
@NASASpaceAlertsOct 18
It’s #SunDay! Here’s your space weather report for Oct. 9-15: •3 M-class flares •0 C-class flares •19 coronal mass ejections •1 geomagnetic storm This video from NASA’s Solar Dynamics Observatory shows the week’s activity. After the Oct. 10 geomagnetic storm, which led to aurora sightings across northern Europe, Canada, and the northeastern United States, it was a relatively calm week on the Sun. The Moon makes a special guest appearance in this week’s video beginning at about 0:36. Note the sharp outline of the Moon’s edge. That’s because the Moon has almost no atmosphere to scatter sunlight. At about 2:30, we also see a calibration maneuver, which the spacecraft performs periodically to account for changes in its instruments’ optics over time. More about solar activity: go.nasa.gov/4bLKwte
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NASA Solar System retweeted
NASA Mars
@NASAMarsOct 15
We've studied the moons of Mars from Earth, from orbit, and even in the sky as seen from the surface. (This view comes from the Curiosity rover.) Now, the @JAXA_en MMX mission will see them up close, and even bring a sample home. NASA will be assisting each step of the way. 1/2
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NASA Solar System retweeted
NASA
@NASAOct 15
Did you know we have a newsletter? We send out weekly updates straight to your inbox about all that’s happening at NASA—free of charge. From space science to technology on the ground, never miss a NASA update: bit.ly/3TzoW6w
A long-exposure photo of Earth taken from aboard the International Space Station. The nighttime view of Earth shows long streaks of city lights and a soft, green airglow outlining the planet. Blurry stars fill the background, and space station hardware appears in the foreground.

ALT A long-exposure photo of Earth taken from aboard the International Space Station. The nighttime view of Earth shows long streaks of city lights and a soft, green airglow outlining the planet. Blurry stars fill the background, and space station hardware appears in the foreground.

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NASA Solar System retweeted
NASA Artemis
@NASAArtemisOct 14
From the Artemis II crew, to the lunar science team, to you. 🌒🫶 Six months have passed since humanity’s most recent visit to the Moon, and a huge library of data from their journey is now available to explore. Get the story: go.nasa.gov/Artemis2LunarSci…
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NASA Solar System retweeted
NASA Mars
@NASAMarsOct 8
Media are invited to join NASA for a teleconference at 4 p.m. EDT, Thursday, Oct. 15, to preview the agency’s contributions to @JAXA_en's Martian Moons eXploration (MMX) mission, which will explore the Red Planet's moons and return a sample of Phobos. go.nasa.gov/4B2qNBI
Illustration of the MMX spacecraft, with its landing legs and solar panels, in space above Mars, with the small moon Phobos nearby. Credit: JAXA

ALT Illustration of the MMX spacecraft, with its landing legs and solar panels, in space above Mars, with the small moon Phobos nearby. Credit: JAXA

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NASA Solar System retweeted
NASA
@NASAOct 14
Have you seen our new episode of Planetary Defenders yet? "This Is Not an Exercise," our latest documentary on the scientists who find asteroids before they find us, is now free to watch on our YouTube channel: youtu.be/5b3n-u_0QAI
A stylized graphic showing the arc of a planet, with various arcs above it symbolizing orbits or trajectories, in shades of neon blue and red against a black background. The text "PLANETARY DEFENDERS" is overlaid in the middle.

ALT A stylized graphic showing the arc of a planet, with various arcs above it symbolizing orbits or trajectories, in shades of neon blue and red against a black background. The text "PLANETARY DEFENDERS" is overlaid in the middle.

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NASA Solar System retweeted
NASA Goddard
@NASAGoddardOct 13
Let's step into the light and explore the terminator. It's the line between day and night. As the NASA Artemis II crew flew over the Moon's terminator, they saw lunar craters and ridges cast dramatic shadows, the kind future explorers might see at the Moon's South Pole.
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NASA Solar System retweeted
ESA Science
@esascienceOct 8
Solar Orbiter tracks the origin of the Sun's mysterious magnetic switchbacks ☀️ Back in 2022, Solar Orbiter spotted a kink in the solar wind’s magnetic field known as a ‘switchback’ and confirmed it to be S-shaped: something scientists had predicted but not seen directly. 1/2
An image showing the Sun glowing yellow in the top right, with a blue S-shaped burst extending to the left

ALT An image showing the Sun glowing yellow in the top right, with a blue S-shaped burst extending to the left

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NASA Solar System retweeted
NASA Mars
@NASAMarsOct 8
A journey to the depths of ancient Mars? Perseverance is exploring a field of light-toned rocks, which are an unusual sight on Mars, a planet dominated by dark-colored basaltic stones. This piqued the team’s interest. What are they? How did they get here?  ½
A desert landscape on Mars, seen from beneath the rover, with its robotic "hand" visible along with and a wheel with tracks in the dirt.

ALT A desert landscape on Mars, seen from beneath the rover, with its robotic "hand" visible along with and a wheel with tracks in the dirt.

A field of light-toned rocks in reddish soil.

ALT A field of light-toned rocks in reddish soil.

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NASA Solar System retweeted
NASA History Office
@NASAhistoryOct 8
“We had to find a way and we did. Looking back, we were the luckiest people in the world; there was no choice but to be pioneers.” —Margaret Hamilton Rest in peace, Margaret. Your trailblazing work leading the development of the on-board flight software for the Apollo spacecraft will forever be remembered. 🫡
Margaret Hamilton poses in a command module mockup in 1969. Credit: MIT Photo Service

ALT Margaret Hamilton poses in a command module mockup in 1969. Credit: MIT Photo Service

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You watched. You listened. And now, you can read about what we learned. 🌙 Today, the @NASAArtemis II Lunar Science Report is publicly accessible, allowing the scientific community to continue studying and building on Artemis II observations. Read more here: go.nasa.gov/Artemis2LunarSci…
(April 6, 2026) - NASA astronauts Christina Koch (below) and Victor Glover (above) share a window inside the Orion spacecraft during the sixth day of the Artemis II mission. Flight Day 6 was the crew's lunar flyby day, during which they rotated roles taking photos, making annotations, and recording their observations of the lunar surface. Credit: NASA

ALT (April 6, 2026) - NASA astronauts Christina Koch (below) and Victor Glover (above) share a window inside the Orion spacecraft during the sixth day of the Artemis II mission. Flight Day 6 was the crew's lunar flyby day, during which they rotated roles taking photos, making annotations, and recording their observations of the lunar surface. Credit: NASA

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NASA Solar System retweeted
NASA Artemis
@NASAArtemisOct 7
A huge library of Artemis II data just dropped! Science is a relay race, and today marks the latest in a long series of handoffs. 814 GB of observations. 996 new images. 521 min of never-before-released crew audio. Dig in: go.nasa.gov/Artemis2LunarSci…
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NASA Solar System retweeted
NASA Technology
@NASA_TechnologyOct 5
In the DC area on Thursday? NASA is hosting a free event for World Space Week where the public can learn how we streamed imagery from the Moon to Earth during the recent Artemis II mission. 👩‍🚀 Join us in-person on Oct. 8 at 3:30 p.m. at NASA Headquarters. Register: bit.ly/4AQcXSw
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NASA Solar System retweeted
NASA JPL
@NASAJPLOct 5
Early risers, you deserve something beautiful. 🌘 On Tuesday, Oct. 6, catch the thin crescent Moon high in the eastern sky before dawn. Just above the Moon, you’ll see the planet Jupiter. Below the Moon, the bright star Regulus will be shining. 1/2
A thin waning crescent Moon.

ALT A thin waning crescent Moon.

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