Mark Marley
@markmarley.bsky.social
Personal account. Substellar science since the 80s.
Reposted by Mark Marley
LPL is excited to be the home for one of the selected PRISM instruments. www.nasa.gov/news-release...
New NASA Artemis Payloads To Study Moon’s Terrain, Radiation, History - NASA
NASA announced Tuesday the selection of three new science investigations that will strengthen humanity’s understanding and exploration of the Moon. As part of
www.nasa.gov
January 21, 2026 at 2:11 PM
LPL is excited to be the home for one of the selected PRISM instruments. www.nasa.gov/news-release...
Reposted by Mark Marley
Rod Serling was a genius. There's that. But as someone who allegedly does this for a living what boggles my mind is he wrote 92 episodes of the show. 92. While producing. And writing & performing the narration. And managing the other scripts. And promoting it. 92!!!
I loved Twilight Zone. Would be interested to hear your thoughts on the episode structure as mini-dramas.
January 21, 2026 at 1:25 AM
Rod Serling was a genius. There's that. But as someone who allegedly does this for a living what boggles my mind is he wrote 92 episodes of the show. 92. While producing. And writing & performing the narration. And managing the other scripts. And promoting it. 92!!!
Reposted by Mark Marley
Gas giants are dead!
Long live ice giants!
(at a bus stop in Edinburgh)
@jjfplanet.bsky.social @markmarley.bsky.social
Long live ice giants!
(at a bus stop in Edinburgh)
@jjfplanet.bsky.social @markmarley.bsky.social
January 20, 2026 at 1:17 AM
Gas giants are dead!
Long live ice giants!
(at a bus stop in Edinburgh)
@jjfplanet.bsky.social @markmarley.bsky.social
Long live ice giants!
(at a bus stop in Edinburgh)
@jjfplanet.bsky.social @markmarley.bsky.social
You know you are old when a pay phone is “for display only”.
January 19, 2026 at 6:32 PM
You know you are old when a pay phone is “for display only”.
In important news I installed a WiFi hose valve to make sure I can step in if the water gets too low. Can’t have any thirsty bobcats. (Before it was on a fixed timer)
January 17, 2026 at 5:42 PM
In important news I installed a WiFi hose valve to make sure I can step in if the water gets too low. Can’t have any thirsty bobcats. (Before it was on a fixed timer)
Great article on the cosmic shoreline. I was fortunate to have an office near Kevin’s for my 20 years at NASA Ames. He is the most creative planetary scientist I know.
How do planetary atmospheres form, and how are they lost? These two questions are carving out a new map of habitable alien realms.
The Road Map to Alien Life Passes Through the ‘Cosmic Shoreline’ | Quanta Magazine
Astronomers are ready to search for the fingerprints of life in faraway planetary atmospheres. But first, they need to know where to look — and that means figuring out which planets are likely to…
www.quantamagazine.org
January 17, 2026 at 4:54 PM
Great article on the cosmic shoreline. I was fortunate to have an office near Kevin’s for my 20 years at NASA Ames. He is the most creative planetary scientist I know.
This is Mesquite mistletoe, here growing on a Palo Verde instead of a Mesquite. It’s an important part of the ecosystem and some birds specialize in eating the berries from these.
January 17, 2026 at 3:04 PM
This is Mesquite mistletoe, here growing on a Palo Verde instead of a Mesquite. It’s an important part of the ecosystem and some birds specialize in eating the berries from these.
CVS drive through. Giving Star Trek vibes.
January 16, 2026 at 12:49 AM
CVS drive through. Giving Star Trek vibes.
This is a great summer program where undergraduates learn about laboratory work through the lens of studying meteorites.
January 14, 2026 at 8:51 PM
This is a great summer program where undergraduates learn about laboratory work through the lens of studying meteorites.
Reposted by Mark Marley
Pandora is up in orbit! But how did the launch feel, up close and personal? Read my blog about my experience: distantearths.com/how-did-the-...
How did the launch *feel*?
An incredible 24 hours! After a picture-perfect launch, Pandora is now in orbit, with solar panels deployed and alive (receiving commands from ground! After seven years of working on this project, …
distantearths.com
January 12, 2026 at 9:36 PM
Pandora is up in orbit! But how did the launch feel, up close and personal? Read my blog about my experience: distantearths.com/how-did-the-...
Reposted by Mark Marley
Our NASA’s Pandora space telescope is on orbit!! Congrats to the team and NASA, LSP, SpaceX, and everyone who helped to get to this exciting point! What will Pandora do and why is it important for exoplanet science? Read my short article on this: theconversation.com/nasas-pandor...
NASA’s Pandora telescope will study stars in detail to learn about the exoplanets orbiting them
The findings from Pandora will complement data from the James Webb Space Telescope to give astronomers more insight into stars and planets outside our solar system.
theconversation.com
January 11, 2026 at 8:01 PM
Our NASA’s Pandora space telescope is on orbit!! Congrats to the team and NASA, LSP, SpaceX, and everyone who helped to get to this exciting point! What will Pandora do and why is it important for exoplanet science? Read my short article on this: theconversation.com/nasas-pandor...
Reposted by Mark Marley
Saw the SpaceX launch from Vandenberg this AM.
It was too early to get sunlight on the exhaust trail so just the rocket flames.
Second stage on the left, booster doing boost back burn on right.
This carried the Pandora mission in the Pioneer program of NASA plus many other satellites.
It was too early to get sunlight on the exhaust trail so just the rocket flames.
Second stage on the left, booster doing boost back burn on right.
This carried the Pandora mission in the Pioneer program of NASA plus many other satellites.
January 11, 2026 at 2:14 PM
Saw the SpaceX launch from Vandenberg this AM.
It was too early to get sunlight on the exhaust trail so just the rocket flames.
Second stage on the left, booster doing boost back burn on right.
This carried the Pandora mission in the Pioneer program of NASA plus many other satellites.
It was too early to get sunlight on the exhaust trail so just the rocket flames.
Second stage on the left, booster doing boost back burn on right.
This carried the Pandora mission in the Pioneer program of NASA plus many other satellites.
I got to see the Falcon 9 carrying Pandora travel across the LA basin from Redlands a few minutes ago. Exciting and a great start for Pandora which will be controlled from the U of A, led by our Daniel Apai.
January 11, 2026 at 2:00 PM
I got to see the Falcon 9 carrying Pandora travel across the LA basin from Redlands a few minutes ago. Exciting and a great start for Pandora which will be controlled from the U of A, led by our Daniel Apai.
Reposted by Mark Marley
🚨🚀🚨 NEW SPACE CONFERENCE ALERT 🚨🚀🚨
The Planetary Science Community Workshop, organized by @theplanetaryguy.bsky.social & @millionconcepts.com, will be held in Louisville, KY on April 14-16 and is aimed at bringing together academia, industry & gov.
More here: planetaryworkshop.org
The Planetary Science Community Workshop, organized by @theplanetaryguy.bsky.social & @millionconcepts.com, will be held in Louisville, KY on April 14-16 and is aimed at bringing together academia, industry & gov.
More here: planetaryworkshop.org
PSCW 2026
planetaryworkshop.org
January 8, 2026 at 8:16 PM
🚨🚀🚨 NEW SPACE CONFERENCE ALERT 🚨🚀🚨
The Planetary Science Community Workshop, organized by @theplanetaryguy.bsky.social & @millionconcepts.com, will be held in Louisville, KY on April 14-16 and is aimed at bringing together academia, industry & gov.
More here: planetaryworkshop.org
The Planetary Science Community Workshop, organized by @theplanetaryguy.bsky.social & @millionconcepts.com, will be held in Louisville, KY on April 14-16 and is aimed at bringing together academia, industry & gov.
More here: planetaryworkshop.org
Standing room only for the Schmidt Sciences presentation at AAS.
January 7, 2026 at 9:55 PM
Standing room only for the Schmidt Sciences presentation at AAS.
Reposted by Mark Marley
New paper day! arxiv.org/abs/2601.02556 🔭🧪
The Lazuli Space Observatory: Architecture & Capabilities
The Lazuli Space Observatory is a 3-meter aperture astronomical facility designed for rapid-response observations and precision astrophysics across visible to near-infrared wavelengths (400-1700 nm ba...
arxiv.org
January 7, 2026 at 3:38 AM
New paper day! arxiv.org/abs/2601.02556 🔭🧪
Reposted by Mark Marley
Thank you US Senator Mark Kelly for welcoming #AAS247 attendees to Arizona and for your continued support of the astronomical sciences. We’re grateful for your ongoing advocacy for science and discovery. #ExploreAstronomy
Photo by © CorporateEventImages/Todd Buchanan 2026 🔭
Photo by © CorporateEventImages/Todd Buchanan 2026 🔭
January 5, 2026 at 8:03 PM
Thank you US Senator Mark Kelly for welcoming #AAS247 attendees to Arizona and for your continued support of the astronomical sciences. We’re grateful for your ongoing advocacy for science and discovery. #ExploreAstronomy
Photo by © CorporateEventImages/Todd Buchanan 2026 🔭
Photo by © CorporateEventImages/Todd Buchanan 2026 🔭
Reposted by Mark Marley
At the #AAS247 Fred Kavli Plenary Lecture, Dr. Daniella “Dani” Mendoza DellaGiustina of the University of Arizona shared new insights from OSIRIS-REx, including what Bennu’s samples are revealing about the early Solar System.
A great start to the meeting!
#KavliAstro #NASA #OSIRISREx #Bennu
A great start to the meeting!
#KavliAstro #NASA #OSIRISREx #Bennu
January 5, 2026 at 6:23 PM
At the #AAS247 Fred Kavli Plenary Lecture, Dr. Daniella “Dani” Mendoza DellaGiustina of the University of Arizona shared new insights from OSIRIS-REx, including what Bennu’s samples are revealing about the early Solar System.
A great start to the meeting!
#KavliAstro #NASA #OSIRISREx #Bennu
A great start to the meeting!
#KavliAstro #NASA #OSIRISREx #Bennu
Coming back to Phoenix for AAS is a bit odd as I was born and raised here (as was my father, born here in 1917 not far from the convention center site). Those places are now over the waterfall, replaced by a very different place.
January 5, 2026 at 2:37 AM
Coming back to Phoenix for AAS is a bit odd as I was born and raised here (as was my father, born here in 1917 not far from the convention center site). Those places are now over the waterfall, replaced by a very different place.
Somehow the University dropped the ball on shipping our AAS tables and branded backdrops so our booth is pretty bare. But at least we are across the way from Startorialist. Come by for some mission posters.
January 4, 2026 at 10:05 PM
Somehow the University dropped the ball on shipping our AAS tables and branded backdrops so our booth is pretty bare. But at least we are across the way from Startorialist. Come by for some mission posters.
Sonogram of Great Horned Owl hoots look like little owl ear tufts. App is Cornell’s BirdNET.
December 30, 2025 at 2:15 PM
Sonogram of Great Horned Owl hoots look like little owl ear tufts. App is Cornell’s BirdNET.
LPL grad student Kayla Smith and I submitted our first paper together today on brown dwarf habitable zones. The literature on this topic is surprisingly thin and no one has really done it right yet. We move the ball forward and look forward to sharing more in the future.
December 29, 2025 at 11:11 PM
LPL grad student Kayla Smith and I submitted our first paper together today on brown dwarf habitable zones. The literature on this topic is surprisingly thin and no one has really done it right yet. We move the ball forward and look forward to sharing more in the future.
On 3/17/23 daughters were randomly visiting Tucson and said, “today is 1st day of Taylor Swift’s new tour in Phoenix and we can get tickets for not crazy prices, we want to drive up, can we take the car?”. Of course we said yes and my wife also went up. I passed and thus missed seeing a phenomenon.
December 29, 2025 at 3:08 AM
On 3/17/23 daughters were randomly visiting Tucson and said, “today is 1st day of Taylor Swift’s new tour in Phoenix and we can get tickets for not crazy prices, we want to drive up, can we take the car?”. Of course we said yes and my wife also went up. I passed and thus missed seeing a phenomenon.