Mark Marley

I clicked on the Apple free trial button for the studio version of Keynote and discovered the file is incompatible with the DPS system and there is no way to deprecate it. Fortunately export to PPT worked well enough. But watch out for this.

I'm excited to announce that I've been selected as a winner of the National Academies Eric and Wendy Schmidt Awards for Excellence in Science Communications (@scicommexcellence.nationalacademies.org)! Learn more: www.nationalacademies.org/news/nationa... #scicomm

Is this sign really necessary? Yes, yes it is.

Finally finished the slides for my plenary talk at DPS on Thursday, although I'm thinking I should use the vintage LPL logo. This composite is probably my favorite mission image as it captures so many of the processes I study and will talk about.

Congrats to LPL alum Moses Milazzo on his new role on the Flagstaff, AZ city council! azdailysun.com/news/local/c...

It's paper day! 🪐 Have you ever wondered what rings around an exoplanet might look like in direct imaging? And how might those rings change our understanding of our observations? We explored this in my new paper, "Entering the Era of Circumplanetary Ring Detection with Direct Imaging." 1/5 🧵👇

Four bobcats hanging out here which is kind of rare. Usually this is a mom, two kits, and last year's daughter. Truly wild bobcats apparently don't do this but it seems to be a signature of suburban groups.

Weather forecast: cloudy! Using the James Webb Space Telescope, Steward Observatory astronomer @bemiles.bsky.social watched WISE 0855, the coldest known brown dwarf, and tracked water clouds moving and changing over time: bit.ly/47VN9Hm

Neptune core is probably fuzzy so a big ice cream scoop would have been better. Likely why it wasn’t selected.

One can never get enough Galiuro Mountain #ringtails ... their home, #CopperCreek. Working hard to ensure this area does not become #mining's proposed "rock waste dump."

Congrats to LPL Associate Professor Kris Klein! 🎉

Screen door slams, the water clouds wave. Nice writeup about Brittany's @bemiles.bsky.social amazing work on this brown dwarf with JWST data with a screen door analogy from me. news.arizona.edu/news/discove...

New study led by @bemiles.bsky.social, reporting the detection of variable water clouds(!) in the cold brown dwarf WISE 0855

Kudos to LPL grad student Anna Taylor! 🥳

At today's National Academies CAPS (Committee on Astrobiology and Planetary Sciences), NASA planetary leadership all but confirmed that the agency is no longer providing the VenSAR radar for the @esa.int ESA EnVision mission. This isn't a surprise, but it's still hugely disappointing. (1/2)

Don't forget to join us tonight! More details about the lecture are here: lpl.arizona.edu/events/2026-...

Great opportunity to come to LPL for a postdoc to work on outer solar system atmospheres w/ Prof. Tommi Koskinen. Exoplanet folks, this is your chance to broaden into solar system atmospheres & build your experience with a world expert on atmos. structure and E balance. aas.org/jobregister/...

Looking majestic.

Local resort having a drone show.

Our new University travel system has a scary warning banner essentially saying "don't buy the cheapest fare as added on costs add up" and then you go to buy the next level up so you can pick your seat and it says the fare is "against policy and must be justified" and none of the justifications fit.

So happy the IAU approved my idea to name two asteroids for Tom Lehrer and “Weird Al” @alyankovic.bsky.social news.asu.edu/20260929-sci...

This graph represents probably more than a hundred thousand hours of work by our community. Every year when I look at it I think our current proposal model is broken.

Congratulations to the LPL seismology team led by Prof. DellaGiustina for being part of the Lunar Environment Monitoring Station selection announced today. www.nasa.gov/news-release...

While orbiting Mars, LPL's HiRISE camera has sent more than 100,000 photos to Earth over the last 20 years. www.tucsonsentinel.com/local/report...

China’s Tiangong Space Station crosses in front of Jupiter in this remarkable astrophotography shot. Just hundreds of kilometres above Earth, Tiangong appears in front of Jupiter, a world hundreds of millions of kilometres away. Captured by 沈老思347

What are the current best ways to visually map/display one's collaborators? I'm giving a review talk and would like something more visually interesting and appropriately recognizing people than lists of names or some of the circle and lines diagrams I can think of.

cc @jjfplanet.bsky.social !

From yesterday, Planetary Geosciences undergraduate Dora Elalaoui-Pinedo explains her working making digital terrain models to NASA Administrator Isaacman. Dora is one of the first 10 or so majors in our new program that started a few years ago.

As OREX formally closes shop at the end of this month, the science in that precious container goes on. Meanwhile the successor mission APEX heads on to Apophis.

LPL welcomes NASA Administrator Jared Isaacman to campus today! 🚀

The next LPL Evening Lecture is Wednesday, October 7 and features Dr. Joellen Russell! More information is here: lpl.arizona.edu/events/2026-...

Congratulations to @jjfplanet.bsky.social for his recognition with the Fred Whipple Award and Lecture!

Enjoyed meeting NASA Administrator Jared Isaacman today as he heard about a few of our missions and met some of our amazing undergrads and grads who make it all possible.

I said I'd do a thread about my new Space Science Reviews paper, so here it is! This is part of a collection of papers arising from a meeting at the International Space Science Institute in Bern in 2024: a workshop to better understand rocky extrasolar planets. A 🧵:

Interesting tidbit from today's briefing at the Outer Planets Assessment Group (OPAG) meeting by NASA planetary leadership: NASA is considering *two* flagships for flight—one to Uranus, the other to orbit and land on Enceladus. Both were Decadal priorities—but in series, not one over the other.

It’s me! I got the ball rolling a year ago. Tim McCoy was instrumental and Allison McGraw helped. We got two asteroids named, thanks to discoverer Bobby Bus: (14330) Tomlehrer and (14331) Alyankovic. Two of my musical heroes, as you can tell from the citations I wrote.

NASA picture of the day today is a real 🏴󠁧󠁢󠁳󠁣󠁴󠁿beauty! This is a composite image of the ~5000yo Callanish Stones on the Isle of Lewis. The amazing Giuseppe Petricca has only gone and photographed the Sun at noon there, every few days, for a whole year. #Dedication 🔭🧪👌 ℹ️: science.nasa.gov/image-articl...

"Shrinking water levels will affect the entire river basin and beyond, but the Grand Canyon itself will feel the changes first." Important read from @hhansman.bsky.social @highcountrynews.org www.hcn.org/articles/wha...

*8* postdoctoral positions in atmospheric physics, from the Earth to Exoplanets: aas.org/jobregister/... This is part of the Multiscale Physics of Clouds Across Planetary Atmospheres collaboration, funded by the Simons Foundation, led by Prof. @astrocaroline.bsky.social!

I only realized a few days ago that “hugging face” is a reference to an emoji and not Alien.