Andy Rivkin
@asrivkin.bsky.social
Planetary Astronomer on #TeamAsteroid; Gedankenband member/guitarist; “Surprisingly nonchalant” according to Wired. He/him הנני 🌻
Work Output: https://scholar.google.com/citations?user=aGVsk3IAAAAJ
Play output: https://andyrivkin.bandcamp.com
Work Output: https://scholar.google.com/citations?user=aGVsk3IAAAAJ
Play output: https://andyrivkin.bandcamp.com
Pinned
Andy Rivkin
@asrivkin.bsky.social
· Sep 5
All* of your favorite** planetary scientists on Bluesky, collected into one starter pack for your convenience! Sometimes, we'll even discuss planetary science!
Is your favorite planetary scientist missing? Have them DM me to be added. :) 🧪🔭
go.bsky.app/SdZsrfw
*OK, many of
**plus me
Is your favorite planetary scientist missing? Have them DM me to be added. :) 🧪🔭
go.bsky.app/SdZsrfw
*OK, many of
**plus me
Reposted by Andy Rivkin
Today marks the five-year anniversary of January 6th. One of the darkest days in our history, we witnessed our democracy pushed to the brink after the President incited an angry mob to storm our nation’s Capitol.
January 6, 2026 at 2:01 PM
Today marks the five-year anniversary of January 6th. One of the darkest days in our history, we witnessed our democracy pushed to the brink after the President incited an angry mob to storm our nation’s Capitol.
🧪🔭
Interested/involved in the #RAMSES planetary defence space mission towards asteroid Apophis?
Wanna get info, news, tech details about its community?
Then check 𝐰𝐰𝐰.𝐫𝐚𝐦𝐬𝐞𝐬𝐦𝐢𝐬𝐬𝐢𝐨𝐧.𝐬𝐩𝐚𝐜𝐞, under supervision by the mission team leaders Monica Lazzarin, Patrick Michel & Paolo Martino.
🦕🦖🌍☄️🛰️🌑
image: ESA
Wanna get info, news, tech details about its community?
Then check 𝐰𝐰𝐰.𝐫𝐚𝐦𝐬𝐞𝐬𝐦𝐢𝐬𝐬𝐢𝐨𝐧.𝐬𝐩𝐚𝐜𝐞, under supervision by the mission team leaders Monica Lazzarin, Patrick Michel & Paolo Martino.
🦕🦖🌍☄️🛰️🌑
image: ESA
January 6, 2026 at 1:53 PM
🧪🔭
It seems more than an inconvenience for this psychopath that Venezuela has land borders with three other countries including Brazil.
Stephen Miller: "What the president said is true. The United States of America is running Venezuela ... by definition we are in charge because we have the US military stationed outside the country. We set the terms and conditions ... for them to do commerce, they need our permission."
January 5, 2026 at 11:37 PM
It seems more than an inconvenience for this psychopath that Venezuela has land borders with three other countries including Brazil.
Reposted by Andy Rivkin
🌍✨Recognize excellence in Earth and space sciences!
🏆Explore AGU Honors—prestigious awards celebrating scientists for outstanding achievements in research, education, science communication and outreach.
🔬Nominate a deserving scientist for an AGU Honor today: buff.ly/J1a7S8r
🏆Explore AGU Honors—prestigious awards celebrating scientists for outstanding achievements in research, education, science communication and outreach.
🔬Nominate a deserving scientist for an AGU Honor today: buff.ly/J1a7S8r
January 5, 2026 at 8:44 PM
🌍✨Recognize excellence in Earth and space sciences!
🏆Explore AGU Honors—prestigious awards celebrating scientists for outstanding achievements in research, education, science communication and outreach.
🔬Nominate a deserving scientist for an AGU Honor today: buff.ly/J1a7S8r
🏆Explore AGU Honors—prestigious awards celebrating scientists for outstanding achievements in research, education, science communication and outreach.
🔬Nominate a deserving scientist for an AGU Honor today: buff.ly/J1a7S8r
🧪🔭🛰️
(sigh)
(sigh)
New #DARTMission result in the Planetary Science Journal:
"A Change of the Rotation Period of Asteroid (65803) Didymos Caused by the DART Impact" by
Josef Ďurech, Petr Pravec, Masatoshi Hirabayashi, Derek C. Richardson, Harrison Agrusa and Ryota Nakano
iopscience.iop.org/article/10.3...
"A Change of the Rotation Period of Asteroid (65803) Didymos Caused by the DART Impact" by
Josef Ďurech, Petr Pravec, Masatoshi Hirabayashi, Derek C. Richardson, Harrison Agrusa and Ryota Nakano
iopscience.iop.org/article/10.3...
January 5, 2026 at 6:55 PM
🧪🔭🛰️
(sigh)
(sigh)
New #DARTMission result in the Planetary Science Journal:
"A Change of the Rotation Period of Asteroid (65803) Didymos Caused by the DART Impact" by
Josef Ďurech, Petr Pravec, Masatoshi Hirabayashi, Derek C. Richardson, Harrison Agrusa and Ryota Nakano
iopscience.iop.org/article/10.3...
"A Change of the Rotation Period of Asteroid (65803) Didymos Caused by the DART Impact" by
Josef Ďurech, Petr Pravec, Masatoshi Hirabayashi, Derek C. Richardson, Harrison Agrusa and Ryota Nakano
iopscience.iop.org/article/10.3...
January 5, 2026 at 6:54 PM
New #DARTMission result in the Planetary Science Journal:
"A Change of the Rotation Period of Asteroid (65803) Didymos Caused by the DART Impact" by
Josef Ďurech, Petr Pravec, Masatoshi Hirabayashi, Derek C. Richardson, Harrison Agrusa and Ryota Nakano
iopscience.iop.org/article/10.3...
"A Change of the Rotation Period of Asteroid (65803) Didymos Caused by the DART Impact" by
Josef Ďurech, Petr Pravec, Masatoshi Hirabayashi, Derek C. Richardson, Harrison Agrusa and Ryota Nakano
iopscience.iop.org/article/10.3...
Reposted by Andy Rivkin
We're thinking about another important winter holiday rn: February 14, aka... Douglass Day!!! Observed on Feb 13 this year
Newsletter out today!
- Ways to get involved
- Organizing kit
- New swag on "All Rights for All"
- Schedule for Feb 13 and later events
douglassday.substack.com/p/douglass-d...
Help us spread the word?
- Ways to get involved
- Organizing kit
- New swag on "All Rights for All"
- Schedule for Feb 13 and later events
douglassday.substack.com/p/douglass-d...
Help us spread the word?
Douglass Day 2026: Happy Holidays!
The Douglass Day team wishes you a happy holiday season! Read more and get ready for 2026!
douglassday.substack.com
January 5, 2026 at 5:39 PM
We're thinking about another important winter holiday rn: February 14, aka... Douglass Day!!! Observed on Feb 13 this year
welcome to the bathroom
January 5, 2026 at 4:25 PM
Reposted by Andy Rivkin
The Beatles' weekend away from the Get Back sessions continued Jan 5, 1969 - 57 years ago - for them, a Sunday. Short context thread begins here.
While they were away from the cameras, they did talk about their night the next day on tape. With that in mind, let's start with the Sunday TV listings 📺
While they were away from the cameras, they did talk about their night the next day on tape. With that in mind, let's start with the Sunday TV listings 📺
January 5, 2026 at 1:23 PM
The Beatles' weekend away from the Get Back sessions continued Jan 5, 1969 - 57 years ago - for them, a Sunday. Short context thread begins here.
While they were away from the cameras, they did talk about their night the next day on tape. With that in mind, let's start with the Sunday TV listings 📺
While they were away from the cameras, they did talk about their night the next day on tape. With that in mind, let's start with the Sunday TV listings 📺
Reposted by Andy Rivkin
Vienna has a lively astronomy department - consider applying to the below if you'd be interested in a four year (!!) position here: 🔭☄️
4-year postdoctoral fellowships for women @univie.ac.at
The application consists of a short (3-page) research statement only.
Feel free to get in touch if you’re interested or would like to discuss potential projects.
careers.univie.ac.at/en/postdoc/e...
Application deadline: 2 March 2026
The application consists of a short (3-page) research statement only.
Feel free to get in touch if you’re interested or would like to discuss potential projects.
careers.univie.ac.at/en/postdoc/e...
Application deadline: 2 March 2026
E-STEEM: Postdoctoral Positions for Women in STEM and Economics - University of Vienna
Supporting women in science: Postdoctoral positions in STEM and Economics as part of the E-STEEM programme. Apply between January and March 2026.
careers.univie.ac.at
January 5, 2026 at 8:33 AM
Vienna has a lively astronomy department - consider applying to the below if you'd be interested in a four year (!!) position here: 🔭☄️
🧪🛰️🔭
🧵For those who don't know, this has been in the works for a while.
There have been plans in the works to close down and consolidate some of the libraries with NASA.
But the closure of the Goddard library was never part of the plan.
Planning was being done to make Goddard the hub/main library.
There have been plans in the works to close down and consolidate some of the libraries with NASA.
But the closure of the Goddard library was never part of the plan.
Planning was being done to make Goddard the hub/main library.
The historic largest library of NASA, linked to the development of the Hubble and James Webb telescopes, is being closed by the Trump administration, resulting in job losses and strong criticism regar...
The Donald Trump administration shut down the library at NASA's Goddard Space Flight Center, threatening its unique scientific collection.
en.clickpetroleoegas.com.br
January 5, 2026 at 12:48 PM
🧪🛰️🔭
🛰️🔭🧪
Third poster in our series: "Space Safety - in action!"
Mission: Ramses
Objective: Intercept and explore the asteroid Apophis as it passes Earth in 2029
Unique feature: Ramses capitalises on a one-in-7000-year scientific opportunity
Launch: 2028
Download at: esa.int/space-safety/in-action
Mission: Ramses
Objective: Intercept and explore the asteroid Apophis as it passes Earth in 2029
Unique feature: Ramses capitalises on a one-in-7000-year scientific opportunity
Launch: 2028
Download at: esa.int/space-safety/in-action
January 5, 2026 at 4:15 AM
🛰️🔭🧪
Noting the pettiness, I still think it’s worthwhile to note that Trump hasn’t made anyone the next president of Venezuela,other than removing Maduro.
This is of a piece with so many other administration stunts, where they get stymied or lazy or both after Step 1. Let’s not get ahead of ourselves.
This is of a piece with so many other administration stunts, where they get stymied or lazy or both after Step 1. Let’s not get ahead of ourselves.
WH sources say Venezuela's opposition leader committed the "ultimate sin": She accepted the Nobel Peace prize.
“If she had turned it down and said, ‘I can’t accept it because it’s Donald Trump’s,’ she’d be the president of Venezuela today,” one said.
www.washingtonpost.com/national-sec...
“If she had turned it down and said, ‘I can’t accept it because it’s Donald Trump’s,’ she’d be the president of Venezuela today,” one said.
www.washingtonpost.com/national-sec...
January 5, 2026 at 4:11 AM
Noting the pettiness, I still think it’s worthwhile to note that Trump hasn’t made anyone the next president of Venezuela,other than removing Maduro.
This is of a piece with so many other administration stunts, where they get stymied or lazy or both after Step 1. Let’s not get ahead of ourselves.
This is of a piece with so many other administration stunts, where they get stymied or lazy or both after Step 1. Let’s not get ahead of ourselves.
Reposted by Andy Rivkin
The real January 4 Get Back-related news happened in 1970. That was the final time the Beatles were in a studio together (until 1994), one day after they recorded "I Me Mine." This overdub session for "Let It Be" likewise featured just George, Paul & Ringo, with John in Denmark
January 4, 2026 at 4:59 PM
The real January 4 Get Back-related news happened in 1970. That was the final time the Beatles were in a studio together (until 1994), one day after they recorded "I Me Mine." This overdub session for "Let It Be" likewise featured just George, Paul & Ringo, with John in Denmark
Reposted by Andy Rivkin
Jumping to the TV listings, take note of the 9:50 listing on BBC-2. A few days later, when Paul McCartney suggests doing a take "once more, with Felix" - it's certainly a reference to Julie Felix's musical program
January 4, 2026 at 4:59 PM
Jumping to the TV listings, take note of the 9:50 listing on BBC-2. A few days later, when Paul McCartney suggests doing a take "once more, with Felix" - it's certainly a reference to Julie Felix's musical program
Reposted by Andy Rivkin
Like on the 2026 calendar, January 4, 1969 - 57 years ago today - falls on the weekend, and the Beatles took that Saturday and Sunday off from the Get Back sessions. But we still have some surrounding context to get a little bit of an idea about their day. Small thread incoming 🧵
January 4, 2026 at 4:59 PM
Like on the 2026 calendar, January 4, 1969 - 57 years ago today - falls on the weekend, and the Beatles took that Saturday and Sunday off from the Get Back sessions. But we still have some surrounding context to get a little bit of an idea about their day. Small thread incoming 🧵
Is this anywhere near the bridge?
January 4, 2026 at 10:42 PM
Is this anywhere near the bridge?
DM: OK, roll for persuasion, at advantage.
Rodriguez: Um...6.
DM: You're at advantage, remember.
Rodriguez: I know, the other roll was lower.
DM: You're including your +2 for proficiency?
Rodriguez: Yes. I really didn't roll well.
<DM rolls and nods>
DM: OK, you convince him to help you.
Rodriguez: Um...6.
DM: You're at advantage, remember.
Rodriguez: I know, the other roll was lower.
DM: You're including your +2 for proficiency?
Rodriguez: Yes. I really didn't roll well.
<DM rolls and nods>
DM: OK, you convince him to help you.
And lo and behold, from the Miami Herald about how Rodriguez pulled off her coup and played Trump for a fool.
This also explains why Marco Rubio looks like such an ignorant, flailing little bitch right now. Because he is.
www.miamiherald.com/news/nation-...
This also explains why Marco Rubio looks like such an ignorant, flailing little bitch right now. Because he is.
www.miamiherald.com/news/nation-...
January 4, 2026 at 10:07 PM
DM: OK, roll for persuasion, at advantage.
Rodriguez: Um...6.
DM: You're at advantage, remember.
Rodriguez: I know, the other roll was lower.
DM: You're including your +2 for proficiency?
Rodriguez: Yes. I really didn't roll well.
<DM rolls and nods>
DM: OK, you convince him to help you.
Rodriguez: Um...6.
DM: You're at advantage, remember.
Rodriguez: I know, the other roll was lower.
DM: You're including your +2 for proficiency?
Rodriguez: Yes. I really didn't roll well.
<DM rolls and nods>
DM: OK, you convince him to help you.
🧪 🛰️ 🔭
January 4, 2026 at 9:55 PM
🧪 🛰️ 🔭
🔭
Talk one at #AAS247 complete. Someday I'll get all my acronyms right 🥲
Regardless, I am happy to talk about what else the HWO SIG group needs and should do as we ramp up activities. We'll soon announce our February seminar to the email list.
tinyurl.com/hwo-sig
Regardless, I am happy to talk about what else the HWO SIG group needs and should do as we ramp up activities. We'll soon announce our February seminar to the email list.
tinyurl.com/hwo-sig
Unofficial HWO SIG
Habitable Worlds Observatory Science Interest Group (HWO SIG) The Habitable Worlds Observatory Science Interest Group (HWO SIG) is an interdisciplinary, community-based forum coordinating analysis an...
Tinyurl.com
January 4, 2026 at 9:55 PM
🔭
Working alongside us? Several years if not more.
Beating the crap out of us at the behest of the sociopaths who are trampling our constitutional and basic human rights? Any day now, I suspect.
Beating the crap out of us at the behest of the sociopaths who are trampling our constitutional and basic human rights? Any day now, I suspect.
How close are we to AI-powered humanoid robots working alongside us? 60 Minutes reports, Sunday.
January 4, 2026 at 2:57 PM
Working alongside us? Several years if not more.
Beating the crap out of us at the behest of the sociopaths who are trampling our constitutional and basic human rights? Any day now, I suspect.
Beating the crap out of us at the behest of the sociopaths who are trampling our constitutional and basic human rights? Any day now, I suspect.
Reposted by Andy Rivkin
That takes us to Twickenham, where the Beatles' Jan 3, 1969, was busy with a deluge of future Macca classics, steady work on George's "All Things Must Pass," rediscovery of "One After 909," a writing Ringo, a taste of a future John classic & more. Read up here! theymaybeparted.com/2013/01/03/t...
TMBP Extra: Jan. 3, 1969 recap
Blogoversary week continues with a look back at my posts about today in Nagra tapes history: Jan. 3, 1969. Setting the tone: A funereal classical piece becomes the movie’s opening theme Starr…
theymaybeparted.com
January 3, 2026 at 4:12 PM
That takes us to Twickenham, where the Beatles' Jan 3, 1969, was busy with a deluge of future Macca classics, steady work on George's "All Things Must Pass," rediscovery of "One After 909," a writing Ringo, a taste of a future John classic & more. Read up here! theymaybeparted.com/2013/01/03/t...
Reposted by Andy Rivkin
this is your mission. our pedophile president needs you to jump out of a helicopter to kidnap a head of state and his wife so some oil ceos can make a lot of money. we’ll be watching from a resort in florida that still serves wedge salad and checking how many retweets we get. good luck soldier
January 3, 2026 at 10:57 PM
this is your mission. our pedophile president needs you to jump out of a helicopter to kidnap a head of state and his wife so some oil ceos can make a lot of money. we’ll be watching from a resort in florida that still serves wedge salad and checking how many retweets we get. good luck soldier
Among the many many F-ed up things about this, it feels to me like the opening gambits of the 2028 GOP primary. JD goes all in to consolidate the neo-Klan and neo-Nazi vote, and Rubio responds by associating with Latin American misadventures to look like the “serious”, more traditional candidate.
January 3, 2026 at 10:16 PM
Among the many many F-ed up things about this, it feels to me like the opening gambits of the 2028 GOP primary. JD goes all in to consolidate the neo-Klan and neo-Nazi vote, and Rubio responds by associating with Latin American misadventures to look like the “serious”, more traditional candidate.
Reposted by Andy Rivkin
The world is a narrow bridge, and the most important thing is not to be afraid.
October 30, 2023 at 4:33 PM
The world is a narrow bridge, and the most important thing is not to be afraid.