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Posts by Dr. Sammy Hasler

Feels relevant #Artemis

1 week ago 234 110 1 0

I also get annoyed by ‘hallucinating’ because it implies it’s sometimes making stuff up and sometimes not.

To be clear, it’s *always* making stuff up - it’s just that sometimes that stuff resembles reality more closely than other times

It has no idea if what it’s generating is right or not.

1 week ago 62 11 0 1
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The FY 2027 NASA budget request hides its science cuts by omitting mission names instead of explicitly zeroing them out.

We did the work and found 54 missions cancelled in this proposal.

This is another extinction-level event for NASA science.

Full list: planetary.org/save-nasa-science

1 week ago 290 214 9 30

What a beautiful moment.

2 weeks ago 5421 1396 38 132

Reid Wiseman on #Artemis II: "We have Earth out window 4 and Moon out window 3... the Moon is about 3-4 times the size of the Earth and it is almost full, and the Earth is just a small crescent out there... it's magnificent... such a majestic view out here"

Mission Control: "Amaze, amaze, amaze!"

2 weeks ago 3409 593 34 35

This is all for tomorrow, April 6. (Sorry, should have specified in the post!)

2 weeks ago 324 86 6 0

The glow on the lower right is sunlight reflecting off of dust from comets and asteroids in our solar system--our version of a debris disk. @nasaromantelescope.bsky.social will have a camera on board that might find the same dust around nearby stars also in their habitable zone. 🔭🧪

2 weeks ago 18 5 0 0
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Graphic with the text "Action Alert: AAS urges advocacy against proposed cuts to science in President's Budget Request"

Graphic with the text "Action Alert: AAS urges advocacy against proposed cuts to science in President's Budget Request"

The President's Budget Request proposes a 47% cut to NASA Science, a 55% cut to NSF, and a 13% cut to the DOE Office of Science. AAS President Dr. Dara Norman sent a call to action to AAS members via email today. Urge your members of Congress to reject these cuts now! aas.org/reject-2027-...

2 weeks ago 170 140 2 15

More to see in that image:

* Aurora Australis (bright green, upper right) & Aurora Borealis (plane green, lower left) visible as faint streaks

* The bright dot in the lower right is Venus

* The white haze in the lower right is zodiacal light: dust in the plane of the Solar System lit by sunlight

2 weeks ago 921 105 18 10
A full disc image of Earth, as seen from the Orion Crew Module. The planet is a pale blue, swirling with white clouds and glowing slightly lighter blue in place from reflected light. At lower left, a large brown landmass is Africa, with Spain and Portugal with twinkling lights where the planet curves. At top right, auroras glow in a thin green glow, just barely separated from the planet's surface. Earth is set against the black of space (pic: NASA/R.Wiseman)

A full disc image of Earth, as seen from the Orion Crew Module. The planet is a pale blue, swirling with white clouds and glowing slightly lighter blue in place from reflected light. At lower left, a large brown landmass is Africa, with Spain and Portugal with twinkling lights where the planet curves. At top right, auroras glow in a thin green glow, just barely separated from the planet's surface. Earth is set against the black of space (pic: NASA/R.Wiseman)

More context on this #Artemis II image:

* This is the night side, lit by moonlight. You can see city lights in Spain & Portugal, & a sliver of day at lower right

* The Sun is entirely behind Earth, which makes it a kind of solar eclipse, but w/ Earth doing the eclipsing instead of the Moon:
☀️🌍🚀🌕

2 weeks ago 13119 3712 234 321
Impact Flash! - GEODES: Geophysical Exploration of the Dynamics and Evolution of the Solar System

Have a 4"+ telescope with a video recorder? The Impact Flash project urgently needs your help imaging the moon during the Artemis II mission! www.geodes.umd.edu/impactflash #astrophotography #astronomy Please share!
@davidbflower.bsky.social @peterlewis55.bsky.social @joegarrity.bsky.social

2 weeks ago 12 5 2 0

This animation illustrates the astonishing cutting-edge robotic science that NASA does while at the same time pursuing human spaceflight - Dragonfly will launch 🚀 in 2028 and explore Saturn’s wildly dynamic moon Titan (which sports clouds, lakes, and rivers of complex hydrocarbon soup)

3 weeks ago 18 8 1 0
A telescopic image of a flat, inclined fuzzy disc with bright rings and dark gaps, all concentric. There is a small blob in one of those gaps. An inset that zooms in on the centre of the disc shows a second blob in another gap.

A telescopic image of a flat, inclined fuzzy disc with bright rings and dark gaps, all concentric. There is a small blob in one of those gaps. An inset that zooms in on the centre of the disc shows a second blob in another gap.

A new solar system in the making?

For the second time ever, two planets have been directly observed forming around a host star. Our VLT and VLTI have helped astronomers confirm the presence of a second gas giant orbiting the star WISPIT 2. 

More: https://www.eso.org/public/news/eso2604/

🔭 🧪

4 weeks ago 105 36 1 3
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Executive Director (NExScI) | Careers at NASA's Jet Propulsion Laboratory (JPL) Apply for Executive Director (NExScI) job with JPL in Pasadena, California, United States of America. Research at JPL . Let's Dare Mighty Things together.

Hey! Come work with me at NExScI!!! #jobs #exoplanets

JPL is hiring a new NExScI Executive Director to replace Chas, who will work with the Deputy Director (David Ciardi) and Chief Scientist (that's me!) in leading NExScI and our suite of impactful exoplanet programs.

www.jpl.jobs/job/R5526/Ex...

1 month ago 51 25 3 3
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Video

The loud boom heard in Cleveland and the light seen across the Midwest and Mid-Atlantic... it was a meteor!

GOES-19's geostationary lightning mapper picked up the brief flash of light.

1 month ago 318 113 6 16
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A second visit to Eps Ind Ab with JWST: new photometry confirms ammonia and suggests thick clouds in the exoplanet atmosphere of the closest super-Jupiter With JWST, we are directly imaging cold (~200-300K), solar-age giant exoplanets for the first time. At these temperatures many molecular features appear and water-ice clouds may condense and affect th...

Beautiful new direct imaging of the exoplanet Eps Ind Ab with the #JWST MIRI coronagraphs by Elisabeth Matthews of @mpi-astro.bsky.social et al - confirming previous detection of ammonia in its atmosphere, and suggesting the presence of water ice clouds. Great work! 🔭 arxiv.org/abs/2603.08780

1 month ago 25 8 0 1
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JWST Observations Rule Out 2032 Lunar Impact for Asteroid 2024 YR4 JWST Observations Rule Out 2032 Lunar Impact for Asteroid 2024 YR4, Rivkin, A. S., de Wit, J., Micheli, M., Farnocchia, D., Burdanov, A. Y., Holler, B., Tholen, D. J., Devogele, M., Graninger, D., Hammel, H. B., Milam, S. N., Mueller, T., Narrett, I. S., Pravec, P., Thomas, C. A.

OK, and ending this particular flurry of activity (I think), here's our Research Note of the AAS giving some more details about our work on #2024YR4. This publication is word-limited and figure-limited, but hopefully will hold folks until we publish a fuller paper in coming weeks! 🔭🧪

1 month ago 16 7 0 1
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New NASA Asteroid Observations Eliminate Chance of 2032 Lunar Impact - NASA Science Using data from NASA’s James Webb Space Telescope observations collected on Feb. 18 and 26, experts from NASA’s Center for Near-Earth Object Studies at the

Hey, so, we have some news about something that won't be happening in 2032.

1 month ago 97 34 18 12
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The Habitable Worlds Observatory in Historical Context We summarize the past four decades of astrophysics and exoplanet direct imaging mission concept studies, technology developments, and scientific progress that have led to the initiation of the Habitab...

Karl Stapelfeldt (JPL/Caltech) and I summarize the historical context that has led us to the Habitable Worlds Observatory. We always build upon the work of many. HWO is no exception. We hope you find this short paper enlightening.
arxiv.org/abs/2602.14823

1 month ago 14 3 0 0
This image is a composite of artist's illustrations of NASA's Nancy Grace Roman Space Telescope pointing towards a lengthy collection of exoplanets against a background image of the Galactic Plane. The text says "2026 Sagan Summer Workshop" and the theme "Exoplanets with Roman Surveys: Microlensing and Transits July 20-24, 2026, Pasadena, California" followed by the hashtag #sagan2026.

This image is a composite of artist's illustrations of NASA's Nancy Grace Roman Space Telescope pointing towards a lengthy collection of exoplanets against a background image of the Galactic Plane. The text says "2026 Sagan Summer Workshop" and the theme "Exoplanets with Roman Surveys: Microlensing and Transits July 20-24, 2026, Pasadena, California" followed by the hashtag #sagan2026.

⏰Time to Register for #sagan2026

The hybrid workshop focuses on expected #exoplanet science from the @nasaromantelescope.bsky.social Galactic Bulge Time Domain Survey. Travel support requests for early-career participants are due 3/5. nexsci.caltech.edu/workshop/2026
🔭 #astrocode #instrumentation

2 months ago 20 11 1 0

Jupiter bonanza scheduled for JWST starting this Friday 🔭 - woo hoo! The teams are calling on amateur astronomers to assist with context imaging of the Solar System's largest planet.

2 months ago 34 11 0 0

Another job was just posted, at the senior software engineer level at @stsci.edu: 🔭 #astrocode

recruiting2.ultipro.com/SPA1004AURA/...

2 months ago 7 2 0 0

Entry level software engineer position at @stsci.edu, application deadline Feb 28: 🧪🔭 #astrocode
recruiting2.ultipro.com/SPA1004AURA/...

2 months ago 3 2 0 1
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Imaging Venus-like Worlds: Spectral, Polarimetric, and UV Diagnostics for the Habitable Worlds Observatory Understanding planetary habitability requires a comparative approach that explores the divergent evolutionary outcomes of Earth and Venus. The Habitable Worlds Observatory (HWO) will be uniquely posit...

I know it's called the "Habitable Worlds Observatory", but what about uninhabitable worlds? Check out the below paper to learn what HWO can teach us about our sister planet and its analogs that are scattered among the stars!
arxiv.org/abs/2602.02728

2 months ago 13 3 0 0
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today! 🔭✨🧪☄️
#exoplanets
#extragalactic
#cosmology

3 months ago 6 1 0 0

Check out the @caltechipac.bsky.social booth at #AAS247!

Also, be sure to ask about our student opportunities! (www.ipac.caltech.edu/page/students) 🔭

3 months ago 8 4 0 0
Image labeled Fomalhaut system, Hubble Space Telescope. A grainy orange oval ring tilts slightly from upper right to lower left. At two o’clock, a white box outlines the ring’s edge and white lines extend to a larger pullout at lower right. Two spots are labeled cs1 2013 and cs2 2023. Inside the ring is a black circle with a white star symbol in the middle.

Image labeled Fomalhaut system, Hubble Space Telescope. A grainy orange oval ring tilts slightly from upper right to lower left. At two o’clock, a white box outlines the ring’s edge and white lines extend to a larger pullout at lower right. Two spots are labeled cs1 2013 and cs2 2023. Inside the ring is a black circle with a white star symbol in the middle.

In a historical milestone, Hubble has witnessed the catastrophic collision of asteroids in the nearby Fomalhaut planetary system 🪨💥 

Observations also revealed that an object previously suspected to be a candidate planet was, in fact, a dust cloud. 
🔭 🧪

4 months ago 145 44 1 4
A screenshot of the Edit site search widget showing the following entries:
Name: Exoplanet Archive
Shortcut: exoplanet
URL with %s in place of query: https://exoplanetarchive.ipac.caltech.edu/overview/%s

A screenshot of the Edit site search widget showing the following entries: Name: Exoplanet Archive Shortcut: exoplanet URL with %s in place of query: https://exoplanetarchive.ipac.caltech.edu/overview/%s

A holiday gift for #exoplanets Chrome users: how to set up the coolest exoplanet shortcut ever.

Click the three-dot menu in the upper right -> Settings -> Search Engine -> Manage search engines and site search.

Scroll to site search and click Add. Fill like this and save:
(1/2)

4 months ago 35 7 2 0
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BAN #275: Telescope buying advice, Book: It’s Alive, Dial-A-Moon 2021 30 November 2020 Issue #271

As an astronomer I get asked a lot what kind of telescope 🔭 so-and-so should get for themselves or their [spouse/kid/etc]. I’m clueless. I use BIG telescopes and have never purchased one in my life. But @philplait.bsky.social knows! Thx, Phil! badastronomy.beehiiv.com/p/ban-275-te...

4 months ago 53 8 2 0
Two technicians in clean suits inspect a the completed Roman Space Telescope in a clean room at a NASA assembly facility.

Two technicians in clean suits inspect a the completed Roman Space Telescope in a clean room at a NASA assembly facility.

NASA has completed the construction of #NASARoman! Last month, technicians joined the inner and outer portions of the observatory in Maryland.

After final testing, Roman will move to the launch site at the Kennedy Space Center for launch preparations in summer 2026: https://go.nasa.gov/48EqnE8 🔭 🧪

4 months ago 148 49 1 5