Eric Mamajek
@ericmamajek.bsky.social
Guy interested in (exo)planets and stars, and everything in between. Statements and opinions posted here are my own.
January 16, 2026 at 6:02 AM
Reposted by Eric Mamajek
IPACer @aussiastronomer.bsky.social & team shared the SHERA Mission Concept at #AAS247 🦸♀️ 🔭
Searching for Habitable Exoplanets with Relative Astrometry (SHERA) will look for rocky planets in the habitable zones of Sun-like stars for the 1st time & potentially discover the nearest Earth-like planets!
Searching for Habitable Exoplanets with Relative Astrometry (SHERA) will look for rocky planets in the habitable zones of Sun-like stars for the 1st time & potentially discover the nearest Earth-like planets!
January 16, 2026 at 2:00 AM
IPACer @aussiastronomer.bsky.social & team shared the SHERA Mission Concept at #AAS247 🦸♀️ 🔭
Searching for Habitable Exoplanets with Relative Astrometry (SHERA) will look for rocky planets in the habitable zones of Sun-like stars for the 1st time & potentially discover the nearest Earth-like planets!
Searching for Habitable Exoplanets with Relative Astrometry (SHERA) will look for rocky planets in the habitable zones of Sun-like stars for the 1st time & potentially discover the nearest Earth-like planets!
Reposted by Eric Mamajek
TTV masses for the 23 Myr gas giant planets V1298 Tau bcde and a [finally!] confirmed period for V1298 Tau e all in the same paper 😱 this is such a benchmark system for understanding planetary evolution. congrats to John Livingston et al. on achieving this feat! 🥳
www.nature.com/articles/s41...
www.nature.com/articles/s41...
January 14, 2026 at 2:44 PM
TTV masses for the 23 Myr gas giant planets V1298 Tau bcde and a [finally!] confirmed period for V1298 Tau e all in the same paper 😱 this is such a benchmark system for understanding planetary evolution. congrats to John Livingston et al. on achieving this feat! 🥳
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Eric Mamajek
🚨🚀🚨 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
Reposted by Eric Mamajek
Just spent the day doing a thing: www.science.org/content/arti...
Roger Angel and I are Co-PIing the LFAST telescope, which is being built at @stewardobservatory.bsky.social and provides the ground based spectroscopic component of this venture.
@schmidtsciences.bsky.social #AAS247 #Arizona #LFAST
Roger Angel and I are Co-PIing the LFAST telescope, which is being built at @stewardobservatory.bsky.social and provides the ground based spectroscopic component of this venture.
@schmidtsciences.bsky.social #AAS247 #Arizona #LFAST
Ex–Google CEO funds private space telescope bigger than Hubble
Schmidt Sciences announces investments in orbiting observatory and three ground-based instruments
www.science.org
January 8, 2026 at 5:53 AM
Just spent the day doing a thing: www.science.org/content/arti...
Roger Angel and I are Co-PIing the LFAST telescope, which is being built at @stewardobservatory.bsky.social and provides the ground based spectroscopic component of this venture.
@schmidtsciences.bsky.social #AAS247 #Arizona #LFAST
Roger Angel and I are Co-PIing the LFAST telescope, which is being built at @stewardobservatory.bsky.social and provides the ground based spectroscopic component of this venture.
@schmidtsciences.bsky.social #AAS247 #Arizona #LFAST
Reposted by Eric Mamajek
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 🔭🧪
CBS, I guess I’m trying to get the humor? Is it funny because new US foreign policy murdered 80 Venezuelans in an undeclared war of conquest in pursuit of the illegal kidnapping of their president and oil? Or because the US is threatening long time NATO ally Denmark with force over Greenland? Which?
Here's the clip of Tony Dokoupil ending tonight's broadcast by absolutely gushing over "ultimate Florida Man" Marco Rubio.
January 7, 2026 at 4:55 AM
CBS, I guess I’m trying to get the humor? Is it funny because new US foreign policy murdered 80 Venezuelans in an undeclared war of conquest in pursuit of the illegal kidnapping of their president and oil? Or because the US is threatening long time NATO ally Denmark with force over Greenland? Which?
Reposted by Eric Mamajek
NASA Discovers Distant Planet With Conditions That Could Sustain Rocks https://theonion.com/nasa-discovers-distant-planet-with-conditions-that-could-sustain-rocks/
January 6, 2026 at 9:15 PM
NASA Discovers Distant Planet With Conditions That Could Sustain Rocks https://theonion.com/nasa-discovers-distant-planet-with-conditions-that-could-sustain-rocks/
Reposted by Eric Mamajek
Amazing images from the Rubin observatory displayed tonight at #AAS247 in Phoenix, at the Arizona Science Center. This is the Trifid and Lagoon Nebulae first light image projected on a planetarium dome.
January 6, 2026 at 4:49 AM
Amazing images from the Rubin observatory displayed tonight at #AAS247 in Phoenix, at the Arizona Science Center. This is the Trifid and Lagoon Nebulae first light image projected on a planetarium dome.
Reposted by Eric Mamajek
Check out the @caltechipac.bsky.social booth at #AAS247!
Also, be sure to ask about our student opportunities! (www.ipac.caltech.edu/page/students) 🔭
Also, be sure to ask about our student opportunities! (www.ipac.caltech.edu/page/students) 🔭
January 6, 2026 at 4:48 PM
Check out the @caltechipac.bsky.social booth at #AAS247!
Also, be sure to ask about our student opportunities! (www.ipac.caltech.edu/page/students) 🔭
Also, be sure to ask about our student opportunities! (www.ipac.caltech.edu/page/students) 🔭
Reposted by Eric Mamajek
“The Habitable Worlds Observatory is exactly the kind of bold, forward-leaning science that only NASA can undertake...” said NASA Administrator Jared Isaacman...
🔭✨🧪🧵☄️
#exoplanets
#extragalactic
🔭✨🧪🧵☄️
#exoplanets
#extragalactic
NASA Selects Tech Proposals to Advance Search-for-Life Mission - NASA
NASA announced Monday the selection of industry proposals to advance technologies for the agency’s Habitable Worlds Observatory concept – the first mission
www.nasa.gov
January 5, 2026 at 11:32 PM
“The Habitable Worlds Observatory is exactly the kind of bold, forward-leaning science that only NASA can undertake...” said NASA Administrator Jared Isaacman...
🔭✨🧪🧵☄️
#exoplanets
#extragalactic
🔭✨🧪🧵☄️
#exoplanets
#extragalactic
Reposted by Eric Mamajek
Today from 3:40-4:30 PM MT in West Building 301AB: Dr. Burgasser's plenary on brown dwarfs! Check out our interview with him here: astrobites.org/2026/01/05/m... #AAS247
Meet the AAS Keynote Speakers: Dr. Adam Burgasser
Today we interview Dr. Adam Burgasser, professor of astronomy and astrophysics at the University of California San Diego (UCSD), and a plenary speaker at #AAS247
astrobites.org
January 5, 2026 at 3:32 PM
Today from 3:40-4:30 PM MT in West Building 301AB: Dr. Burgasser's plenary on brown dwarfs! Check out our interview with him here: astrobites.org/2026/01/05/m... #AAS247
Day 2 of #ExoPAG33 9am-12:15pm MT
Joint PAG meeting (#ExoPAG, #COPAG, #PhysPAG)
2:30pm-6pm
both at: Phoenix Convention Center, 100 N 3rd St, Phoenix, AZ 85004, Room: West Building, 301 D
science.nasa.gov/astrophysics...
#exoplanets #AAS247
Joint PAG meeting (#ExoPAG, #COPAG, #PhysPAG)
2:30pm-6pm
both at: Phoenix Convention Center, 100 N 3rd St, Phoenix, AZ 85004, Room: West Building, 301 D
science.nasa.gov/astrophysics...
#exoplanets #AAS247
ExoPAG 33 – Program - NASA Science
(Updated 12/31/2025 )
science.nasa.gov
January 4, 2026 at 4:30 PM
Day 2 of #ExoPAG33 9am-12:15pm MT
Joint PAG meeting (#ExoPAG, #COPAG, #PhysPAG)
2:30pm-6pm
both at: Phoenix Convention Center, 100 N 3rd St, Phoenix, AZ 85004, Room: West Building, 301 D
science.nasa.gov/astrophysics...
#exoplanets #AAS247
Joint PAG meeting (#ExoPAG, #COPAG, #PhysPAG)
2:30pm-6pm
both at: Phoenix Convention Center, 100 N 3rd St, Phoenix, AZ 85004, Room: West Building, 301 D
science.nasa.gov/astrophysics...
#exoplanets #AAS247
Reposted by Eric Mamajek
A bit of good news: a new Exoplanet Travel Bureau poster just debuted at NASA ExoPAG 33!
January 4, 2026 at 12:26 AM
A bit of good news: a new Exoplanet Travel Bureau poster just debuted at NASA ExoPAG 33!
For astronomers arriving in Phoenix for #ExoPAG33 and #AAS247, if you’re wondering what the heck is going on in the vicinity of the Phoenix Convention Center:
Painted Desert Fur Con 2026 at the Sheraton Phoenix Jan 2-4
painteddesertfc.org
Painted Desert Fur Con 2026 at the Sheraton Phoenix Jan 2-4
painteddesertfc.org
January 3, 2026 at 1:00 AM
For astronomers arriving in Phoenix for #ExoPAG33 and #AAS247, if you’re wondering what the heck is going on in the vicinity of the Phoenix Convention Center:
Painted Desert Fur Con 2026 at the Sheraton Phoenix Jan 2-4
painteddesertfc.org
Painted Desert Fur Con 2026 at the Sheraton Phoenix Jan 2-4
painteddesertfc.org
Reposted by Eric Mamajek
If you are a resident of California, the state now has a portal where you can demand deletion of your personal data from 500+ registered data brokers with a single request form, for free.
consumer.drop.privacy.ca.gov
consumer.drop.privacy.ca.gov
consumer.drop.privacy.ca.gov
January 2, 2026 at 2:26 AM
If you are a resident of California, the state now has a portal where you can demand deletion of your personal data from 500+ registered data brokers with a single request form, for free.
consumer.drop.privacy.ca.gov
consumer.drop.privacy.ca.gov
Reposted by Eric Mamajek
Nothing says The Golden Age of a civilization like destroying research, arts, chasing away expertise and replace things with meaningless vanity projects for a megalomania leader.
January 1, 2026 at 7:30 PM
Nothing says The Golden Age of a civilization like destroying research, arts, chasing away expertise and replace things with meaningless vanity projects for a megalomania leader.
Reposted by Eric Mamajek
They're going to *throw out* one-of-a-kind NASA archives?!
Not even a year since the Inauguration & we're already at the 2nd-time-as-farce version of the burning of the Library of Alexandria.
Not even a year since the Inauguration & we're already at the 2nd-time-as-farce version of the burning of the Library of Alexandria.
December 31, 2025 at 7:55 PM
They're going to *throw out* one-of-a-kind NASA archives?!
Not even a year since the Inauguration & we're already at the 2nd-time-as-farce version of the burning of the Library of Alexandria.
Not even a year since the Inauguration & we're already at the 2nd-time-as-farce version of the burning of the Library of Alexandria.
Reposted by Eric Mamajek
Christmas on the archive!
@ericmamajek.bsky.social leads a paper with his usual precision, asking us astronomers (especially exoplanet folks) to clean up their jargon.
Introducing the Solirad: the nominal average flux the Earth receives from the Sun = 1361 W/m^2
arxiv.org/abs/2512.20126
@ericmamajek.bsky.social leads a paper with his usual precision, asking us astronomers (especially exoplanet folks) to clean up their jargon.
Introducing the Solirad: the nominal average flux the Earth receives from the Sun = 1361 W/m^2
arxiv.org/abs/2512.20126
The Solirad (So) as a Convenient Unit for Quoting Astronomical Irradiances for Planetary Insolations and Exoplanetary Instellations
Measurements of physical parameters for stars and (exo)planets are often quoted in units normalized to the Sun and/or Earth. The nominal total solar irradiance, ${S}^{\rm N}_{\odot}$, while based on a...
arxiv.org
December 24, 2025 at 3:28 AM
Christmas on the archive!
@ericmamajek.bsky.social leads a paper with his usual precision, asking us astronomers (especially exoplanet folks) to clean up their jargon.
Introducing the Solirad: the nominal average flux the Earth receives from the Sun = 1361 W/m^2
arxiv.org/abs/2512.20126
@ericmamajek.bsky.social leads a paper with his usual precision, asking us astronomers (especially exoplanet folks) to clean up their jargon.
Introducing the Solirad: the nominal average flux the Earth receives from the Sun = 1361 W/m^2
arxiv.org/abs/2512.20126
Reposted by Eric Mamajek
The winter solstice occurs Sunday morning at 10:03am EST — the longest night of the year.
Long before modern calendars, people knew this moment in advance. From Newgrange to Chankillo, ancient monuments show how careful skywatching became humanity’s first way of trusting time.
🧪🔭
bit.ly/WhySolstice
Long before modern calendars, people knew this moment in advance. From Newgrange to Chankillo, ancient monuments show how careful skywatching became humanity’s first way of trusting time.
🧪🔭
bit.ly/WhySolstice
December 20, 2025 at 5:18 PM
The winter solstice occurs Sunday morning at 10:03am EST — the longest night of the year.
Long before modern calendars, people knew this moment in advance. From Newgrange to Chankillo, ancient monuments show how careful skywatching became humanity’s first way of trusting time.
🧪🔭
bit.ly/WhySolstice
Long before modern calendars, people knew this moment in advance. From Newgrange to Chankillo, ancient monuments show how careful skywatching became humanity’s first way of trusting time.
🧪🔭
bit.ly/WhySolstice
Reposted by Eric Mamajek
Live long and be merry.
op: omegaparticlepodcast via IG
op: omegaparticlepodcast via IG
December 21, 2025 at 1:06 AM
Live long and be merry.
op: omegaparticlepodcast via IG
op: omegaparticlepodcast via IG
Reposted by Eric Mamajek
Hey #exoplaneteers - we are hiring a new software developer on the NASA Exoplanet Archive and ExoFOP, to backfill someone who left this year. We've had good success hiring exoplanet folks with strong software skillsets into these positions!
phf.tbe.taleo.net/phf03/ats/ca...
phf.tbe.taleo.net/phf03/ats/ca...
Hiring Applications Developer, IPAC - Pasadena, CA
View job details and apply now
phf.tbe.taleo.net
December 19, 2025 at 5:25 AM
Hey #exoplaneteers - we are hiring a new software developer on the NASA Exoplanet Archive and ExoFOP, to backfill someone who left this year. We've had good success hiring exoplanet folks with strong software skillsets into these positions!
phf.tbe.taleo.net/phf03/ats/ca...
phf.tbe.taleo.net/phf03/ats/ca...