Mark Marley
@markmarley.bsky.social
Personal account. Substellar science since the 80s.
Had zero idea until just now about this different Daisy World.
November 16, 2025 at 6:28 PM
Had zero idea until just now about this different Daisy World.
More Tucson problems on the bike trail. Everyone, walkers included, was very chill and just went around behind the rattlesnake.
November 15, 2025 at 8:17 PM
More Tucson problems on the bike trail. Everyone, walkers included, was very chill and just went around behind the rattlesnake.
“I don’t need to bring the bins into the garage since they’ll be smart enough to smell that they are empty.”
November 15, 2025 at 5:56 PM
“I don’t need to bring the bins into the garage since they’ll be smart enough to smell that they are empty.”
The things you can find opening random storage closets in our basement.
November 14, 2025 at 9:19 PM
The things you can find opening random storage closets in our basement.
Former LPL Director Tim Swindle and me last night with former NASA astronaut Scott Altman who was CDR on the last two HST servicing missions. He told some hair raising stories about the two missions. Event was awarding of the Astronaut Scholarship Foundation recognition to a fantastic UA undergrad.
November 14, 2025 at 2:40 PM
Former LPL Director Tim Swindle and me last night with former NASA astronaut Scott Altman who was CDR on the last two HST servicing missions. He told some hair raising stories about the two missions. Event was awarding of the Astronaut Scholarship Foundation recognition to a fantastic UA undergrad.
Thanks so much to @luiswel.bsky.social who drove down twice from ASU to give two great lectures to my exoplanets grad class students. Explained both how retrievals work and how easy it can be to engineer the significance to tell the story you want. Plus a bonus visit by @joneskuma.bsky.social
November 14, 2025 at 2:21 PM
Thanks so much to @luiswel.bsky.social who drove down twice from ASU to give two great lectures to my exoplanets grad class students. Explained both how retrievals work and how easy it can be to engineer the significance to tell the story you want. Plus a bonus visit by @joneskuma.bsky.social
You have a better horizon than I do.
November 12, 2025 at 4:29 AM
You have a better horizon than I do.
Our local sky island aspens.
November 11, 2025 at 9:08 PM
Our local sky island aspens.
This cactus wren is using the feather bonanza to construct its nest. Can’t get more circle of life than that.
November 11, 2025 at 4:03 PM
This cactus wren is using the feather bonanza to construct its nest. Can’t get more circle of life than that.
This weekend I read that the entire Breaking Bad franchise is estimated to have had $385M in economic impact for the state of NM and this is celebrated by a statue at the ABQ convention center. Meanwhile University of Arizona space science has an economic impact of $560M on our state every year.
November 10, 2025 at 11:45 PM
This weekend I read that the entire Breaking Bad franchise is estimated to have had $385M in economic impact for the state of NM and this is celebrated by a statue at the ABQ convention center. Meanwhile University of Arizona space science has an economic impact of $560M on our state every year.
I don’t begrudge the hawk its dinner but wish it had eaten on the outside of the patio wall instead of inside.
November 8, 2025 at 11:14 PM
I don’t begrudge the hawk its dinner but wish it had eaten on the outside of the patio wall instead of inside.
Today Show Tucson feature this morning ideally should have had featured the other side of Cherry in this aerial shot.
November 6, 2025 at 1:51 AM
Today Show Tucson feature this morning ideally should have had featured the other side of Cherry in this aerial shot.
Some new members of the family.
November 2, 2025 at 3:41 PM
Some new members of the family.
Lots of trick or treaters tonight and great costumes.
November 1, 2025 at 1:29 AM
Lots of trick or treaters tonight and great costumes.
Practically Wild Kingdom out here. IYKYK
October 29, 2025 at 4:43 AM
Practically Wild Kingdom out here. IYKYK
Doesn’t look like a comfortable way to drink.
October 28, 2025 at 2:46 PM
Doesn’t look like a comfortable way to drink.
iPhone photo gets the mood.
October 24, 2025 at 1:59 AM
iPhone photo gets the mood.
Not Comet Lemon, but a contrail disconcertingly close to the right place.
October 21, 2025 at 1:26 AM
Not Comet Lemon, but a contrail disconcertingly close to the right place.
This is a 10/10 no notes Tucson day.
October 18, 2025 at 5:55 PM
This is a 10/10 no notes Tucson day.
Decided to show off my thesis code in my office.
October 18, 2025 at 12:22 AM
Decided to show off my thesis code in my office.
I wonder what they are discussing.....
October 17, 2025 at 11:07 PM
I wonder what they are discussing.....
One year since my best lifetime bobcat capture. The boy kit (must have been) splashed all the water out of the bowl to take a snooze.
October 11, 2025 at 7:33 PM
One year since my best lifetime bobcat capture. The boy kit (must have been) splashed all the water out of the bowl to take a snooze.
Watch the visitor on the right.
October 11, 2025 at 2:19 PM
Watch the visitor on the right.
The joke that the only time you hear from your adult children is when they need the Netflix code is a bit too close for comfort.
October 5, 2025 at 6:23 PM
The joke that the only time you hear from your adult children is when they need the Netflix code is a bit too close for comfort.
Last night at 7PM, a little drama. First time we’ve had two since spring. I was outside around the to the right enjoying the sunset at the time.
October 5, 2025 at 3:34 PM
Last night at 7PM, a little drama. First time we’ve had two since spring. I was outside around the to the right enjoying the sunset at the time.