#solar-system — Public Fediverse posts

Useless Facts, Badly Drawn #516: Uranus sunsets.
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#uranus #planets #space #solarsystem #astronomy #strangebuttrue #wtf #facts #comics #webcomics #uselessfacts #uselessfactsbadlydrawn

Useless Facts, Badly Drawn #516: Uranus sunsets.
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#uranus #planets #space #solarsystem #astronomy #strangebuttrue #wtf #facts #comics #webcomics #uselessfacts #uselessfactsbadlydrawn

An ancient moonpocalypse may explain #Neptune’s odd #moon #Nereid
The strange satellite was born in a steady, circular orbit around Neptune, then tossed into its elongated orbit during a chaotic encounter with a #Pluto-sized body that ejected or pulverized all its sibling #moons. This idea counters assumption that Nereid formed in #KuiperBelt, the cold reservoir of #space rocks in outer #solarsystem, and was pitched into its present orbit later.
https://www.sciencenews.org/article/neptunes-odd-moon-nereid-orbit-remnant
https://archive.ph/3RUYD

An ancient moonpocalypse may explain #Neptune’s odd #moon #Nereid
The strange satellite was born in a steady, circular orbit around Neptune, then tossed into its elongated orbit during a chaotic encounter with a #Pluto-sized body that ejected or pulverized all its sibling #moons. This idea counters assumption that Nereid formed in #KuiperBelt, the cold reservoir of #space rocks in outer #solarsystem, and was pitched into its present orbit later.
https://www.sciencenews.org/article/neptunes-odd-moon-nereid-orbit-remnant
https://archive.ph/3RUYD

2026-07-13 12:00:00 UTC (Delta: 2026-07-06)

MERCURY
- Distance (km): 85,990,367.85 km (-286,325.11 km)
- Distance (AU): 0.57 (-0.00)
- Light travel time: 4 min 46.83 s (-0.96 s)
- Orbital speed: 41.01 km/s (+1.77 km/s)

Image: Peak Rings on Mercury
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

#Mercury #Space #SolarSystem

2026-07-13 12:00:00 UTC (Delta: 2026-07-06)

MERCURY
- Distance (km): 85,990,367.85 km (-286,325.11 km)
- Distance (AU): 0.57 (-0.00)
- Light travel time: 4 min 46.83 s (-0.96 s)
- Orbital speed: 41.01 km/s (+1.77 km/s)

Image: Peak Rings on Mercury
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

#Mercury #Space #SolarSystem

2026-07-12 12:00:00 UTC (Delta: 2026-07-05)

PLUTO [ *1930 +2006 ]
- Distance (km): 5,171,837,171.35 km (-4,653,176.16 km)
- Distance (AU): 34.57 (-0.03)
- Light travel time: 4 h 47 min 31.39 s (-15.52 s)
- Orbital speed: 5.25 km/s (+0.00 km/s)

Image: Ice Volcanoes on Pluto?
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#Pluto #Space #SolarSystem

2026-07-12 12:00:00 UTC (Delta: 2026-07-05)

PLUTO [ *1930 +2006 ]
- Distance (km): 5,171,837,171.35 km (-4,653,176.16 km)
- Distance (AU): 34.57 (-0.03)
- Light travel time: 4 h 47 min 31.39 s (-15.52 s)
- Orbital speed: 5.25 km/s (+0.00 km/s)

Image: Ice Volcanoes on Pluto?
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#Pluto #Space #SolarSystem

⭐ 4.5 billion years ago, a star wandered close enough to reshape our entire outer Solar System.

A 2024 study in Nature Astronomy ran 3,000+ simulations and found that a star roughly 0.8x the Sun's mass passed within 110 AU (about 0.2% of the distance to the next nearest star today) at a steep 70-degree angle.

The gravitational handshake flung icy objects onto wild eccentric orbits, created Sedna-like bodies that swing out hundreds of AU, and even produced worlds orbiting backward, opposite to every planet.

The best part: this wasn't even the main prediction. Retrograde objects appeared as a natural bonus that the modelers weren't looking for.

At least 140 million Sun-like stars in the Milky Way have likely experienced a similar encounter. The Vera Rubin Observatory, which started its survey in 2025, should discover roughly 40,000 new trans-Neptunian objects and put this to the test.

Sources:
Pfalzner et al. (2024), Nature Astronomy: https://www.nature.com/articles/s41550-024-02349-x
Sky & Telescope: https://skyandtelescope.org/astronomy-news/a-visiting-star-might-have-reshaped-the-outer-solar-system/

#astronomy #solarsystem #space

⭐ 4.5 billion years ago, a star wandered close enough to reshape our entire outer Solar System.

A 2024 study in Nature Astronomy ran 3,000+ simulations and found that a star roughly 0.8x the Sun's mass passed within 110 AU (about 0.2% of the distance to the next nearest star today) at a steep 70-degree angle.

The gravitational handshake flung icy objects onto wild eccentric orbits, created Sedna-like bodies that swing out hundreds of AU, and even produced worlds orbiting backward, opposite to every planet.

The best part: this wasn't even the main prediction. Retrograde objects appeared as a natural bonus that the modelers weren't looking for.

At least 140 million Sun-like stars in the Milky Way have likely experienced a similar encounter. The Vera Rubin Observatory, which started its survey in 2025, should discover roughly 40,000 new trans-Neptunian objects and put this to the test.

Sources:
Pfalzner et al. (2024), Nature Astronomy: https://www.nature.com/articles/s41550-024-02349-x
Sky & Telescope: https://skyandtelescope.org/astronomy-news/a-visiting-star-might-have-reshaped-the-outer-solar-system/

#astronomy #solarsystem #space

2026-07-11 12:00:00 UTC (Delta: 2026-07-04)

NEPTUNE
- Distance (km): 4,428,712,696.03 km (-17,262,876.14 km)
- Distance (AU): 29.60 (-0.12)
- Light travel time: 4 h 6 min 12.60 s (-57.58 s)
- Orbital speed: 5.47 km/s (+0.00 km/s)

Image: ARC-1989-AC89-7036
Credit: JPL

#Neptune #Space #SolarSystem

2026-07-11 12:00:00 UTC (Delta: 2026-07-04)

NEPTUNE
- Distance (km): 4,428,712,696.03 km (-17,262,876.14 km)
- Distance (AU): 29.60 (-0.12)
- Light travel time: 4 h 6 min 12.60 s (-57.58 s)
- Orbital speed: 5.47 km/s (+0.00 km/s)

Image: ARC-1989-AC89-7036
Credit: JPL

#Neptune #Space #SolarSystem

THE WEEKLY SPIN
28/2026

#SolarSystem #OrbitalMechanics #Earth #Moon #Mars

THE WEEKLY SPIN
28/2026

#SolarSystem #OrbitalMechanics #Earth #Moon #Mars

Could exoplanets locked in eternal day and endless night support life? https://phys.org/news/2026-07-exoplanets-eternal-day-endless-night.html 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology

Could exoplanets locked in eternal day and endless night support life? https://phys.org/news/2026-07-exoplanets-eternal-day-endless-night.html 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology

2026-07-10 12:00:00 UTC (Delta: 2026-07-03)

URANUS
- Distance (km): 3,017,893,023.94 km (-11,649,970.14 km)
- Distance (AU): 20.17 (-0.08)
- Light travel time: 2 h 47 min 46.61 s (-38.86 s)
- Orbital speed: 6.72 km/s (+0.00 km/s)

Image: Uranus - Final Image
Credit: NASA/JPL

#Uranus #Space #SolarSystem

2026-07-10 12:00:00 UTC (Delta: 2026-07-03)

URANUS
- Distance (km): 3,017,893,023.94 km (-11,649,970.14 km)
- Distance (AU): 20.17 (-0.08)
- Light travel time: 2 h 47 min 46.61 s (-38.86 s)
- Orbital speed: 6.72 km/s (+0.00 km/s)

Image: Uranus - Final Image
Credit: NASA/JPL

#Uranus #Space #SolarSystem

#Uranus and #Neptune should be more than 60% rock. For decades, elementary students learned the same tale of the #SolarSystem: first come rocky terrestrial planets such as #Earth, followed by gas giants such as #Jupiter and #ice giants such as Neptune. “We really don’t know what these #planets 🪐 are made of.” https://www.science.org/content/article/uranus-and-neptune-may-not-be-ice-giants-after-all

#Astronomy

#Uranus and #Neptune should be more than 60% rock. For decades, elementary students learned the same tale of the #SolarSystem: first come rocky terrestrial planets such as #Earth, followed by gas giants such as #Jupiter and #ice giants such as Neptune. “We really don’t know what these #planets 🪐 are made of.” https://www.science.org/content/article/uranus-and-neptune-may-not-be-ice-giants-after-all

#Astronomy

Scientists discover rare 'super-Jupiter' planet with 180-day long orbit https://phys.org/news/2026-07-scientists-rare-super-jupiter-planet.html 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology

Scientists discover rare 'super-Jupiter' planet with 180-day long orbit https://phys.org/news/2026-07-scientists-rare-super-jupiter-planet.html 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology

Europlanet is an organisation for all kinds of planetary science people in Europe, including academia, industry, government and amateurs. You can follow their video account at:

➡️ @europlanet_media

(Don't worry if it looks blank, that just means no one from your server follows it yet. If you follow the account, the videos will start gradually showing up on your server too.)

#FeaturedPeerTube #PlanetaryScience #Science #Space #Astrophysics #SolarSystem #PeerTube

Europlanet is an organisation for all kinds of planetary science people in Europe, including academia, industry, government and amateurs. You can follow their video account at:

➡️ @europlanet_media

(Don't worry if it looks blank, that just means no one from your server follows it yet. If you follow the account, the videos will start gradually showing up on your server too.)

#FeaturedPeerTube #PlanetaryScience #Science #Space #Astrophysics #SolarSystem #PeerTube

2026-07-09 12:00:00 UTC (Delta: 2026-07-02)

SATURN
- Distance (km): 1,399,578,651.16 km (-17,377,668.06 km)
- Distance (AU): 9.36 (-0.12)
- Light travel time: 1 h 17 min 48.49 s (-57.97 s)
- Orbital speed: 9.73 km/s (+0.00 km/s)

Image: Saturn Rings Artist Concept
Credit: NASA/JPL

#Saturn #Space #SolarSystem

2026-07-09 12:00:00 UTC (Delta: 2026-07-02)

SATURN
- Distance (km): 1,399,578,651.16 km (-17,377,668.06 km)
- Distance (AU): 9.36 (-0.12)
- Light travel time: 1 h 17 min 48.49 s (-57.97 s)
- Orbital speed: 9.73 km/s (+0.00 km/s)

Image: Saturn Rings Artist Concept
Credit: NASA/JPL

#Saturn #Space #SolarSystem

There is a leak in the solar system. Actually, more than one.

https://www.conferencesthatwork.com/index.php/uncategorized/2020/12/leak-in-solar-system

#SolarSystem #Leak #BillBryson #DNA #NASA #yoga

There is a leak in the solar system. Actually, more than one.

https://www.conferencesthatwork.com/index.php/uncategorized/2020/12/leak-in-solar-system

#SolarSystem #Leak #BillBryson #DNA #NASA #yoga

2026-07-08 12:00:00 UTC (Delta: 2026-07-01)

JUPITER
- Distance (km): 935,251,972.32 km (+5,375,188.62 km)
- Distance (AU): 6.25 (+0.04)
- Light travel time: 51 min 59.66 s (+17.93 s)
- Orbital speed: 12.87 km/s (-0.01 km/s)

Image: Jupiter Swirling Storms
Credit: NASA/JPL

#Jupiter #Space #SolarSystem

2026-07-08 12:00:00 UTC (Delta: 2026-07-01)

JUPITER
- Distance (km): 935,251,972.32 km (+5,375,188.62 km)
- Distance (AU): 6.25 (+0.04)
- Light travel time: 51 min 59.66 s (+17.93 s)
- Orbital speed: 12.87 km/s (-0.01 km/s)

Image: Jupiter Swirling Storms
Credit: NASA/JPL

#Jupiter #Space #SolarSystem

It's disturbingly easy to trick AI into seeing aliens, say researchers https://phys.org/news/2026-07-disturbingly-easy-ai-aliens.html 🪐
#Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology #AI #ArtificialIntelligence

It's disturbingly easy to trick AI into seeing aliens, say researchers https://phys.org/news/2026-07-disturbingly-easy-ai-aliens.html 🪐
#Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology #AI #ArtificialIntelligence

2026-07-07 12:00:00 UTC (Delta: 2026-06-30)

VENUS
- Distance (km): 148,628,591.48 km (-7,986,138.27 km)
- Distance (AU): 0.99 (-0.05)
- Light travel time: 8 min 15.77 s (-26.64 s)
- Orbital speed: 35.04 km/s (-0.05 km/s)

Image: Pioneer-Venus Image (Crescent)
Credit: ARC

#Venus #Space #SolarSystem

2026-07-07 12:00:00 UTC (Delta: 2026-06-30)

VENUS
- Distance (km): 148,628,591.48 km (-7,986,138.27 km)
- Distance (AU): 0.99 (-0.05)
- Light travel time: 8 min 15.77 s (-26.64 s)
- Orbital speed: 35.04 km/s (-0.05 km/s)

Image: Pioneer-Venus Image (Crescent)
Credit: ARC

#Venus #Space #SolarSystem

New Study Suggests Earth May Survive Sun's Expansion in 5 Billion Years

📰 Original title: Good News! Turns Out the Earth Will Never Be Swallowed by the Sun

🤖 IA: It's clickbait ⚠️
👥 Users: It's clickbait ⚠️

View full AI summary https://en.killbait.com/new-study-suggests-earth-may-survive-sun-s-expansion-in-5-billion-years.html?utm_source=mastodon_world&utm_medium=social&utm_campaign=killbait.mastodon_world

#astronomy #solarsystem #earth'sfate

Comet 3I/ATLAS is older than the sun

https://fed.brid.gy/r/https://www.popsci.com/science/how-old-is-comet-3i-atlas/

Comet 3I/ATLAS is older than the sun

https://fed.brid.gy/r/https://www.popsci.com/science/how-old-is-comet-3i-atlas/

Astronomers find biggest super-puff planets yet that are lighter than cotton candy https://
phys.org/news/2026-06-astronomers-biggest-super-puff-planets.html 🪐
#Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology

Astronomers find biggest super-puff planets yet that are lighter than cotton candy https://
phys.org/news/2026-06-astronomers-biggest-super-puff-planets.html 🪐
#Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology

2026-07-06 12:00:00 UTC (Delta: 2026-06-29)

MERCURY
- Distance (km): 86,276,692.96 km (-7,737,334.89 km)
- Distance (AU): 0.58 (-0.05)
- Light travel time: 4 min 47.79 s (-25.81 s)
- Orbital speed: 39.24 km/s (+0.33 km/s)

Image: Digital Elevation Model of Mercury Northern Hemisphere
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

#Mercury #Space #SolarSystem

2026-07-06 12:00:00 UTC (Delta: 2026-06-29)

MERCURY
- Distance (km): 86,276,692.96 km (-7,737,334.89 km)
- Distance (AU): 0.58 (-0.05)
- Light travel time: 4 min 47.79 s (-25.81 s)
- Orbital speed: 39.24 km/s (+0.33 km/s)

Image: Digital Elevation Model of Mercury Northern Hemisphere
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

#Mercury #Space #SolarSystem

2026-07-05 12:00:00 UTC (Delta: 2026-06-28)

PLUTO [ *1930 +2006 ]
- Distance (km): 5,176,490,347.52 km (-6,628,721.72 km)
- Distance (AU): 34.60 (-0.04)
- Light travel time: 4 h 47 min 46.91 s (-22.11 s)
- Orbital speed: 5.25 km/s (+0.01 km/s)

Image: Pluto in True Color
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#Pluto #Space #SolarSystem

2026-07-05 12:00:00 UTC (Delta: 2026-06-28)

PLUTO [ *1930 +2006 ]
- Distance (km): 5,176,490,347.52 km (-6,628,721.72 km)
- Distance (AU): 34.60 (-0.04)
- Light travel time: 4 h 47 min 46.91 s (-22.11 s)
- Orbital speed: 5.25 km/s (+0.01 km/s)

Image: Pluto in True Color
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#Pluto #Space #SolarSystem

Watch at: https://youtu.be/rvUKJ9R0Mws
Play at: https://www.lexaloffle.com/bbs/?tid=157964

#youtube #youtuber #pico8 #program #programming #programmer #programgenerator #generator #code #coding #codegenerator #scripting #nerd #geek #solarsystem #animation #animated #2d #2danimation #lua #art #artist #artistsonmastodon #creative #creativecoding #generation

Watch at: https://youtu.be/rvUKJ9R0Mws
Play at: https://www.lexaloffle.com/bbs/?tid=157964

#youtube #youtuber #pico8 #program #programming #programmer #programgenerator #generator #code #coding #codegenerator #scripting #nerd #geek #solarsystem #animation #animated #2d #2danimation #lua #art #artist #artistsonmastodon #creative #creativecoding #generation

2026-07-04 12:00:00 UTC (Delta: 2026-06-27)

NEPTUNE
- Distance (km): 4,445,975,289.57 km (-17,549,042.40 km)
- Distance (AU): 29.72 (-0.12)
- Light travel time: 4 h 7 min 10.18 s (-58.54 s)
- Orbital speed: 5.47 km/s (+0.00 km/s)

Image: Neptune Rings
Credit: NASA/JPL

#Neptune #Space #SolarSystem

2026-07-04 12:00:00 UTC (Delta: 2026-06-27)

NEPTUNE
- Distance (km): 4,445,975,289.57 km (-17,549,042.40 km)
- Distance (AU): 29.72 (-0.12)
- Light travel time: 4 h 7 min 10.18 s (-58.54 s)
- Orbital speed: 5.47 km/s (+0.00 km/s)

Image: Neptune Rings
Credit: NASA/JPL

#Neptune #Space #SolarSystem