Also see iopscience.iop.org/article/10.3...
What Even Is an “Exomoon”?
What Even Is an “Exomoon”?, Kipping, David
iopscience.iop.org
September 29, 2026 at 12:20 PM
Also see iopscience.iop.org/article/10.3...
Astronomers may have found the first exosatellite, a planetary-mass world orbiting the brown dwarf CD-35 2722 b, 73 light-years away. Whether it truly qualifies as an exomoon remains debated, but the discovery reveals just how strange and diverse planetary systems can be. 🌝🌌🛰️
Have astronomers discovered the first moon outside of our solar system?
A possible Jupiter-sized object circling the brown dwarf CD-35 2722 b has implications for planetary science, including what counts as a moon beyond our own solar system.
www.astronomy.com
September 22, 2026 at 4:52 PM
Astronomers may have found the first exosatellite, a planetary-mass world orbiting the brown dwarf CD-35 2722 b, 73 light-years away. Whether it truly qualifies as an exomoon remains debated, but the discovery reveals just how strange and diverse planetary systems can be. 🌝🌌🛰️
enormous gaps. One gap, millions of kilometers wide, was likely carved by a forming exomoon approaching the size of Earth.
J1407b itself is no elegant gas giant like Saturn. It is a heavyweight of around 20 Jupiter masses orbiting a young star 434 light-years away. The entire system is only about
J1407b itself is no elegant gas giant like Saturn. It is a heavyweight of around 20 Jupiter masses orbiting a young star 434 light-years away. The entire system is only about
September 22, 2026 at 6:53 AM
enormous gaps. One gap, millions of kilometers wide, was likely carved by a forming exomoon approaching the size of Earth.
J1407b itself is no elegant gas giant like Saturn. It is a heavyweight of around 20 Jupiter masses orbiting a young star 434 light-years away. The entire system is only about
J1407b itself is no elegant gas giant like Saturn. It is a heavyweight of around 20 Jupiter masses orbiting a young star 434 light-years away. The entire system is only about
From Elise Koo: Today’s authors go looking for satellites around brown dwarf CD-35 2722. What do they find? They can’t quite find the right words... 🔭 ☄️ 🧪 astrobites.org/2026/09/16/exomoon_identity_crisis/
The exomoon identity crisis
Today's authors go looking for satellites around brown dwarf CD-35 2722. What do they find? They can't quite find the right words...
astrobites.org
September 18, 2026 at 11:24 PM
From Elise Koo: Today’s authors go looking for satellites around brown dwarf CD-35 2722. What do they find? They can’t quite find the right words... 🔭 ☄️ 🧪 astrobites.org/2026/09/16/exomoon_identity_crisis/
The exoplanet Kepler-1625b may host an exomoon comparable in size to Neptune, which is larger than any moon in our own solar system. Such a colossal moon is unknown in our solar system. This discovery, if confirmed, would offer new perspectives on planetary system development and potentially lead...
September 14, 2026 at 9:00 PM
The exoplanet Kepler-1625b may host an exomoon comparable in size to Neptune, which is larger than any moon in our own solar system. Such a colossal moon is unknown in our solar system. This discovery, if confirmed, would offer new perspectives on planetary system development and potentially lead...
JWST ruled out finding tiny moons around an exoplanet—that's great news https://phys.org/news/2026-09-jwst-tiny-moons-exoplanet-great.html 🪐 #exoplanet #exoplanets #alienworlds #alienlife #extraterrestrials #space #science #solarsystem #astrobiology
JWST ruled out finding tiny moons around an exoplanet—that's great news
The James Webb Space Telescope (JWST) has opened many wonders of the cosmos to scientists since it began science operations a few years ago. But one thing it hasn't done is find an "exomoon." These still-theoretical moons orbit exoplanets in other star systems, and JWST was supposed to find a plethora of them.
phys.org
September 14, 2026 at 3:21 PM
JWST ruled out finding tiny moons around an exoplanet—that's great news https://phys.org/news/2026-09-jwst-tiny-moons-exoplanet-great.html 🪐 #exoplanet #exoplanets #alienworlds #alienlife #extraterrestrials #space #science #solarsystem #astrobiology
JWST ruled out finding tiny moons around an exoplanet-that's great news
->Phys.org | More on "James Webb exomoon detection methods" at BigEarthData.ai | #moon #space
->Phys.org | More on "James Webb exomoon detection methods" at BigEarthData.ai | #moon #space
JWST ruled out finding tiny moons around an exoplanet-that's great news
The James Webb Space Telescope (JWST) has opened many wonders of the cosmos to scientists since it began science operations a few years ago. But one thing it hasn't done is find an "exomoon." These still-theoretical moons orbit exoplanets in other star systems, and JWST was supposed to find a plethora of them. However, it has found precisely none. The cause appears to be noise in the telescope's instrumentation or from the star itself. But a new paper, available in preprint form on arXiv, from David Kipping, an astronomer at Columbia and host of the Cool Worlds YouTube channel, shows how JWST can find an exomoon. It likely just has to look for one in the same place repeatedly. To prove the point, Dr. Kipping analyzed data JWST collected on a planet called LP 890-9 c. This exoplanet orbits an ultracool red dwarf located around 105 light-years away. With an 8.46-day orbital period, saying the planet is close to its star is an understatement, but, at least in theory, it is in the habitable zone of this extremely low-temperature host star. Another advantage was how often and how long JWST observed it—Kipping was able to analyze data from 12 different...
phys.org
September 14, 2026 at 3:33 AM
The periodic table strikes back!
startalk.substack.com/p/the-period...
startalk.substack.com/p/the-period...
The periodic table strikes back!
Plus, what the heck is an exomoon?
startalk.substack.com
September 13, 2026 at 8:13 PM
The periodic table strikes back!
startalk.substack.com/p/the-period...
startalk.substack.com/p/the-period...
He’s all ready to issue Special Order 937.
I say we have him go on the next voyage to exomoon LV-426.
I say we have him go on the next voyage to exomoon LV-426.
September 13, 2026 at 1:24 AM
He’s all ready to issue Special Order 937.
I say we have him go on the next voyage to exomoon LV-426.
I say we have him go on the next voyage to exomoon LV-426.
Exomoon orbiting its planet (artist’s impression)
Image date: 3 October 2018, 20:00
Credit: NASA, ESA, and L. Hustak (STScI)
Source: ESA/Hubble
Image date: 3 October 2018, 20:00
Credit: NASA, ESA, and L. Hustak (STScI)
Source: ESA/Hubble
September 12, 2026 at 6:55 PM
Exomoon orbiting its planet (artist’s impression)
Image date: 3 October 2018, 20:00
Credit: NASA, ESA, and L. Hustak (STScI)
Source: ESA/Hubble
Image date: 3 October 2018, 20:00
Credit: NASA, ESA, and L. Hustak (STScI)
Source: ESA/Hubble
Combining data from multiple JWST transits is paying off. David Kipping's analysis of LP 890-9 c rules out large exomoons by averaging away instrumental noise that confounds single-transit searches. A methodological win for exomoon science.
#J…
📖 nova-maind.com/articles/915...
#J…
📖 nova-maind.com/articles/915...
September 12, 2026 at 5:00 PM
Combining data from multiple JWST transits is paying off. David Kipping's analysis of LP 890-9 c rules out large exomoons by averaging away instrumental noise that confounds single-transit searches. A methodological win for exomoon science.
#J…
📖 nova-maind.com/articles/915...
#J…
📖 nova-maind.com/articles/915...
A Rendezvous With The Halley’s Comet
Is this a supernova ready to explode
A mission to Halley’s Comet in 2060
amazing new image from Vera Rubin
Webb fails to find an exomoon
some black holes formed much faster than their galaxies.
youtu.be/fA75k6U2HYg
Is this a supernova ready to explode
A mission to Halley’s Comet in 2060
amazing new image from Vera Rubin
Webb fails to find an exomoon
some black holes formed much faster than their galaxies.
youtu.be/fA75k6U2HYg
A Rendezvous With The Halley’s Comet
YouTube video by Fraser Cain
youtu.be
September 12, 2026 at 5:17 AM
A Rendezvous With The Halley’s Comet
Is this a supernova ready to explode
A mission to Halley’s Comet in 2060
amazing new image from Vera Rubin
Webb fails to find an exomoon
some black holes formed much faster than their galaxies.
youtu.be/fA75k6U2HYg
Is this a supernova ready to explode
A mission to Halley’s Comet in 2060
amazing new image from Vera Rubin
Webb fails to find an exomoon
some black holes formed much faster than their galaxies.
youtu.be/fA75k6U2HYg
🌕 Is this the first exomoon? 🧪 🔭
Astronomers found a planetary-mass object orbiting a brown dwarf — which itself orbits a star. Planet, moon, or “exosatellite”? The answer may depend on how it formed.
www.seti.org/news/is-this...
Astronomers found a planetary-mass object orbiting a brown dwarf — which itself orbits a star. Planet, moon, or “exosatellite”? The answer may depend on how it formed.
www.seti.org/news/is-this...
Is This the First Exomoon
www.seti.org
September 11, 2026 at 11:00 PM
🌕 Is this the first exomoon? 🧪 🔭
Astronomers found a planetary-mass object orbiting a brown dwarf — which itself orbits a star. Planet, moon, or “exosatellite”? The answer may depend on how it formed.
www.seti.org/news/is-this...
Astronomers found a planetary-mass object orbiting a brown dwarf — which itself orbits a star. Planet, moon, or “exosatellite”? The answer may depend on how it formed.
www.seti.org/news/is-this...
That's no moon: Exomoon survival and detection limitations. Alicia Pérez-Rodrigo et. al. https://arxiv.org/abs/2609.07320
September 10, 2026 at 2:35 PM
That's no moon: Exomoon survival and detection limitations. Alicia Pérez-Rodrigo et. al. https://arxiv.org/abs/2609.07320
That's no moon: Exomoon survival and detection limitations
https://arxiv.org/pdf/2609.07320
Alicia Pérez-Rodrigo, Isabel Rebollido.
https://arxiv.org/pdf/2609.07320
Alicia Pérez-Rodrigo, Isabel Rebollido.
https://arxiv.org/abs/2609.07320
arXiv abstract link
arxiv.org
September 9, 2026 at 1:33 PM
That's no moon: Exomoon survival and detection limitations
https://arxiv.org/pdf/2609.07320
Alicia Pérez-Rodrigo, Isabel Rebollido.
https://arxiv.org/pdf/2609.07320
Alicia Pérez-Rodrigo, Isabel Rebollido.
Alicia P\'erez-Rodrigo, Isabel Rebollido: That's no moon: Exomoon survival and detection limitations https://arxiv.org/abs/2609.07320 https://arxiv.org/pdf/2609.07320 https://arxiv.org/html/2609.07320
September 9, 2026 at 6:51 AM
Alicia P\'erez-Rodrigo, Isabel Rebollido: That's no moon: Exomoon survival and detection limitations https://arxiv.org/abs/2609.07320 https://arxiv.org/pdf/2609.07320 https://arxiv.org/html/2609.07320
Very cool! We really should be getting #exomoon transits with JWST....
The most sensitive search for exomoons ever - moons 2.5x smaller than Europa are excluded! And around a temperate Earth-sized planet to boot. What’s really neat is that, for the first time, we can confidently say another Earth does not enjoy total Solar eclipses.
arxiv.org/abs/2609.05301
arxiv.org/abs/2609.05301
September 7, 2026 at 2:36 PM
Very cool! We really should be getting #exomoon transits with JWST....
Rise - The Vieneo Province
Current players: 0
Avg players: 0
Peak players: 2
Total user reviews: 29
Avg gameplay hours: 30h
Price: $19.99
Find more information on SteamPulse:
https://steampulse.org/game/795990
Current players: 0
Avg players: 0
Peak players: 2
Total user reviews: 29
Avg gameplay hours: 30h
Price: $19.99
Find more information on SteamPulse:
https://steampulse.org/game/795990
Rise - The Vieneo Province on SteamPulse
Rise is a persistent science fiction sandbox strategy MMO set on Vieneo, an exomoon about 225 LY from Earth. Use ground, air, and space vehicles to explore this vast open world of 100 million square kilometers in size! You are helping establish a living, breathing world with virt
steampulse.org
September 2, 2026 at 10:50 AM
Rise - The Vieneo Province
Current players: 0
Avg players: 0
Peak players: 2
Total user reviews: 29
Avg gameplay hours: 30h
Price: $19.99
Find more information on SteamPulse:
https://steampulse.org/game/795990
Current players: 0
Avg players: 0
Peak players: 2
Total user reviews: 29
Avg gameplay hours: 30h
Price: $19.99
Find more information on SteamPulse:
https://steampulse.org/game/795990
👀 Nine times, the signal turned out to be nothing. The tenth time was different.
PhD student Kevin Hoy tells the story of the unexpected signal that led to evidence for a possible exomoon.
Catch up on SETI Live: youtube.com/live/OKBnlby... 🧪 🔭
PhD student Kevin Hoy tells the story of the unexpected signal that led to evidence for a possible exomoon.
Catch up on SETI Live: youtube.com/live/OKBnlby... 🧪 🔭
August 31, 2026 at 11:00 PM
👀 Nine times, the signal turned out to be nothing. The tenth time was different.
PhD student Kevin Hoy tells the story of the unexpected signal that led to evidence for a possible exomoon.
Catch up on SETI Live: youtube.com/live/OKBnlby... 🧪 🔭
PhD student Kevin Hoy tells the story of the unexpected signal that led to evidence for a possible exomoon.
Catch up on SETI Live: youtube.com/live/OKBnlby... 🧪 🔭
We're in the phase of the exomoon study when the hopes are being dashed again, unless exotic life is found on Titan.
August 30, 2026 at 7:48 PM
We're in the phase of the exomoon study when the hopes are being dashed again, unless exotic life is found on Titan.