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Kristian Claus

@kristianclaus.bsky.social
309 followers 388 following 145 posts

Meteorologist. Pilot. Risk analyst. Actor. Educator. Entrepreneur. Environmental advocate. Space astronomy enthusiast. Health-seeker. 🎬 Warrior, Megalopolis.

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Reposted by Kristian Claus
Yvette Cendes @whereisyvette.bsky.social · 21/09/2026
And it scales PERFECTLY with what we see in our own solar system for magnetosphere field strength and radio emission! We get a lower limit of 1200 Gauss, which is... A LOT. For comparison, Jupiter is ~10 Gauss. This is FAR STRONGER than anything we have detected locally
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Reposted by Kristian Claus
Yvette Cendes @whereisyvette.bsky.social · 21/09/2026
Just LOOK at Fig 2 in the preprint! This emission is definitely NOT coming from the star, but IS coming from where Beta Pic b is located! Which we know for sure thanks to direct imaging!
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Reposted by Kristian Claus
Yvette Cendes @whereisyvette.bsky.social · 21/09/2026
He relied on the tiny, minute difference in signal arrival btwn the antennas in the array to pinpoint where it was coming from (see figure), data from the Gaia satellite, a VLBI radio source in field, and a TON of other technical tricks to localize the source for real in the Beta Pic system. And...
Schematic showing a slight difference in signal arrival between two radio antennas
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Reposted by Kristian Claus
Yvette Cendes @whereisyvette.bsky.social · 21/09/2026
We got follow up time, and IT GETS BETTER! There is PERIODICITY! Which is about 8 hours longer, which is as long as the period for one exoplanet in the system, Beta Pic b!!! 🤯
Hours vs density for beta pic data showing periodicity
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Reposted by Kristian Claus
Yvette Cendes @whereisyvette.bsky.social · 21/09/2026
A DETECTION! Clear as day! In the 1-3 GHz range! (MeerKAT doesn't unfortunately go to higher frequencies.) Pretty darn compelling!
Figure 1 from preprint, showing radio detection of emission from the Beta Pic system
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Yvette Cendes @whereisyvette.bsky.social · 21/09/2026
But to begin, we can get NATURAL radio emission from exoplanets! We see this in our own solar system, where every planet w a magnetic field emits some radio emission. And it's not all faint- Jupiter is brighter than the sun in radio when its beam is pointed at us! (pic here taken with the VLA)
Jupiter at radio wavelengths, looking like a space lizard
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Reposted by Kristian Claus
Yvette Cendes @whereisyvette.bsky.social · 21/09/2026
If @science.org is covering it, I guess I should share something here- we have for the first time definitively detected radio emission from a planet around another star! 🔭🧪🎢 What does this mean? Details in thread! (But TL;DR- still not aliens) 🧵 www.sciencenews.org/article/exop...
sciencenews.org
First radio waves seen from an exoplanet hint at otherworldly auroras
The gas giant Beta Pictoris b, about 63 light-years away, has the mass of 10 Jupiters and a magnetic field thousands of times as strong as Earth’s.
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Kristian Claus @kristianclaus.bsky.social · 18/09/2026
You pregame the snack with a different snack.
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Reposted by Kristian Claus
Prof. Eliot Jacobson @climatecasino.net · 09/09/2026
Breaking News! The 3-year mean rate of atmospheric CO2 growth just hit a new record high after August's data was released, now at 8.33 ppm per 3-years. And the dip in the early 1990s was Mt. Pinatubo.
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Reposted by Kristian Claus
David Blanchflower BSc @davidbflower.bsky.social · 09/09/2026
Archaeologists discover ancient tomb in Peru. 🧪 www.bbc.co.uk/news/videos/...
bbc.co.uk
Ancient tomb found in Peru in a largely undisturbed state
The burial site of the ancient pre-Incan Chimu culture was found largely intact.
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Reposted by Kristian Claus
Bob Henson @bhensonweather.bsky.social · 09/09/2026
The kind of U.S. trifecta we don't want: hottest August, hottest summer, and hottest year to date :-/. U.S. drought situation is pretty grim too, with Lakes Powell and Mead both near all-time lows. Looking to you, El Niño. @climateconnections.bsky.social yaleclimateconnections.org/2026/09/we-j...
yaleclimateconnections.org
We just had the hottest August, hottest summer, and hottest year to date in U.S. history » Yale Climate Connections
NOAA data show unprecedented heat, as deepening drought, shrinking reservoirs, and a severe wildfire season underscore the growing impacts of a warming climate. Could El Niño bring some relief?
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Kristian Claus @kristianclaus.bsky.social · 09/09/2026
I got a great deal yesterday. Historically great.
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Kristian Claus @kristianclaus.bsky.social · 08/09/2026
static.klipy.com
Transformers G1: Decepticon to Autobot Logo Transition
ALT: Transformers G1: Decepticon to Autobot Logo Transition
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Reposted by Kristian Claus
Prof. Eliot Jacobson @climatecasino.net · 08/09/2026
Breaking News! Code UFB!!! For only the second time on record, global sea-surface temperatures are more than 6 standard deviations above the 1982-2011 baseline, reaching 6.21SD yesterday. The record of 6.24SD was set on January 9, 2024. Maybe tomorrow? Stay tuned!
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Reposted by Kristian Claus
Nereide @drnereide.bsky.social · 07/09/2026
🧵 Very dense stars, such as old millisecond pulsars and white dwarfs, could harbor a tiny #blackhole as massive as a truck. A new study does not assume it exists: it calculates what would follow if that seed could form.🔭🧪⚛️ phys.org/news/2026-09-black-hole-tons-star-dark.html #cosmology
This artist's concept shows a pulsar, which is like a lighthouse, as its light appears in regular pulses as it rotates. Pulsars are dense remnants of exploded stars, and are part of a class of objects called neutron stars.

photojournal.jpl.nasa.gov/catalog/PIA21085

PIA21085

Credits: NASA/JPL-Caltech
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Kristian Claus @kristianclaus.bsky.social · 08/09/2026
Gone With The Wind 2
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Reposted by Kristian Claus
David Blanchflower BSc @davidbflower.bsky.social · 07/09/2026
Bat tunnel built under new dual carriageway. 🧪 🦇 www.bbc.co.uk/news/article...
bbc.co.uk
Bat tunnel built for new A421 road between Bedford and Cambridge
National Highways says the bat tunnel will help wild animals "safely navigate" a dual carriageway.
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Jeff Berardelli @weatherprof.bsky.social · 07/09/2026
*Big El Niño Boost in next few weeks! Our already record El Niño is about to get a spike to “Historic”. Humans have never seen such an episode, so I’d expect some unprecedented events. A major push of west winds in the Tropical Pacific will surge warming. 1/
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Reposted by Kristian Claus
David Blanchflower BSc @davidbflower.bsky.social · 06/09/2026
'Nepal bet nearly everything on hydropower - the floods show why that's a problem.' 🧪 www.bbc.co.uk/news/article...
bbc.co.uk
Nepal bet nearly everything on hydropower - the floods show why that's a problem
More than 10% of Nepal's energy generation capacity was knocked out by last week's floods.
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Reposted by Kristian Claus
Climatologist49 @climatologist49.bsky.social · 05/09/2026
Nepal observed their warmest August nationwide, with the most anomalous region being the border with China/Tibet. It is hard to imagine that record warm temps did not hasten the bedrock/glacier collapse disaster.
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Dakota Smith @weatherdak.bsky.social · 05/09/2026
Holy smokes Hurricane Lowell's eye is incredible.
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Prof. Eliot Jacobson @climatecasino.net · 05/09/2026
Breaking News! Code: Yikes! The latest Nino 3.4 plume was just released by ECMWF, showing the peak of the current El Nino coming in at about 4.0°C above the 1991-2020 average in December. The previous record monthly peak was 2.8°C in November, 2015.
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Kristian Claus @kristianclaus.bsky.social · 03/09/2026
It’s a bad day to be life in the universe.
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Kristian Claus @kristianclaus.bsky.social · 24/08/2026
Ain’t no way
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Reposted by Kristian Claus
CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 24/08/2026
A couple years back (2022), Earth intersected with a powerful Gamma-ray burst, one that originated ~2 billion years ago. It was so powerful it literally shook our atmosphere (we can see this in radio). New #PrePrint provides interpretation of what happened.... and it reads like an epic movie!
GRB 220101A is a long GRB, with a total energy exceeding 1054 erg with a redshift z = 4.61 and
one of the largest ever high-quality multi-wavelength observational coverage, from a large number of
space-based and ground-based telescopes. We interpret this source in a doubly Binary driven peta nova
(BdP-N) model. The progenitor is composed of a massive CO core of ∼ 10 M⊙, highly magnetized
with B ∼ 106 G, associated to a neutron star (NS) and a white dwarf (WD) with orbital periods
from minutes to hours. The large GRB luminosity is explained by a sequence of 7 episodes: episode 1
is triggered by a new kind of pair supernova (HB) which originates from the collapse of the strongly
magnetized CO core. Accretion of the HB supernova ejecta (the ejecta) onto the white dwarf companion
triggers after 3.5 sec the episode 2: the second supernova emitting neutrinos and creating a new neutron
star (νNS). The ejecta, interacting with the magnetosphere of the binary NS companion originate the
episode 3: the Ultra relativistic Prompt Emission (UPE) emission by far the most energetic episode of
this GRB, with the formation of a powerful jet normal to the plane of the GRB. Following the UPE
energy loss, the accretion of the ejecta on the NS companion leads to the episode 4: the formation of
a black hole (BH) of 2.3 M⊙ leading to the observed GeV afterglow emission. Further accretion of the
ejecta spin up the νNS to a period of 1.3 ms which gives origin to the episode 5: the birth of a pulsar.
The interaction of this milli-second pulsar with the remnants lead to the Episode 6: the synchrotron
emission observed in the X-ray, optical and radio, The episode 7 is a 56.7 ms pulsar, as observed 1010
s after the first burst in the crab nebula.
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Kristian Claus @kristianclaus.bsky.social · 21/08/2026
I bet this one has a jedi.
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Kristian Claus @kristianclaus.bsky.social · 20/08/2026
Pew
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Reposted by Kristian Claus
Nereide @drnereide.bsky.social · 20/08/2026
4/8 This close approach makes S301 sensitive to the rotation of the MBH. The Lense-Thirring effect occurs when a spinning black hole drags and twists the spacetime around it, leading to a slight alteration of the star’s orbit.
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Reposted by Kristian Claus
Nereide @drnereide.bsky.social · 20/08/2026
3/8 At pericenter — the closest point of its orbit — S301 reaches about 12 au from the massive black hole (MBH), roughly the same distance as the Sun to Saturn. No previously observed star has come this close.
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Reposted by Kristian Claus
Nereide @drnereide.bsky.social · 20/08/2026
1/8 A team, led by researchers at #MPE and the Paris Observatory/PSL, detected S301, the closest star around Sgr A*, the BH at the heart of our Galaxy. 🔭🧪 It orbits in 8.7 years and its peak velocity reaches about 25,000 km/s, so being faster than any known star in the Milky Way.⚛️ #cosmology
Four-panel figure of GRAVITY near-infrared images showing the area around Sagittarius A*. Panels a to d display an annotated sequence of observations from 2021 to 2025, reconstructed using the GRAVITY-RESOLVE method.
The orbital path of star S301 is overlaid. In panels c and d, Sgr A* and star S62 appear blended due to Gaussian smoothing. Panel a also marks a possible source labelled SX that has not been re-detected.  

Credit: GRAVITY+ Collaboration / Nature (2026)
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Reposted by Kristian Claus
Prof. Eliot Jacobson @climatecasino.net · 18/08/2026
Quick El Niño update. The most recent Niño 3.4 sea-surface temperature for August 17th was 2.73°C above the 1991-2020 average. This marked the 80th consecutive day setting a new record daily high, and was 0.92°C above the previous record for the day set back in 1997.
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Kristian Claus @kristianclaus.bsky.social · 19/08/2026
Needed a stamp. Bought 20. Too perfect to use. Still need a stamp.
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Reposted by Kristian Claus
Nereide @drnereide.bsky.social · 17/08/2026
3/8 The paper - 'A gas-enshrouded and gas-reddened black hole at cosmic dawn', Nature (12 August 2026) – proposes a model in which a supermassive black hole (about 10⁶–10⁷ solar masses) is surrounded by an envelope of extremely dense and turbulent gas, approximately the size of the Solar System.
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Nereide @drnereide.bsky.social · 17/08/2026
2/8 Contrary to some recent claims, this is not something completely new that the cosmos has never shown us before — similar objects (the so-called little red dots) have been observed for years — nor is it a star with a black hole inside in the literal sense.
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Nereide @drnereide.bsky.social · 17/08/2026
1/8 In 2025, I reported the discovery of MoM-z14, the most distant galaxy confirmed spectroscopically, a result of the JWST "Mirage or Miracle" (MoM) program led by R. Naidu & collaborators.🔭⚛️🧪 They have just published another great result from the same program in Nature: MoM-BH*-1. #cosmology
Three-panel scientific illustration comparing different astrophysical objects. Left panel shows a soft azure sphere with a yellow core, representing a normal star as a dense ball of gas powered by nuclear fusion. Center panel shows an intense azure disk with a small black spherical core, representing a black hole growing by consuming matter through a pancake-like accretion disk. Right panel shows a bright red multi-layered gaseous envelope surrounding a small black spherical core with a yellow halo, representing a black hole star: a nascent black hole enshrouded in dense gas that radiates in a star-like manner, with the accreting black hole acting as the power source and the surrounding gas serving as a pseudo-photosphere.

Image credit: iStock; Jose-Luis Olivares, MIT.
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Kristian Claus @kristianclaus.bsky.social · 17/08/2026
Can we just go back to Myspace?
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Reposted by Kristian Claus
Nereide @drnereide.bsky.social · 09/08/2026
1/14 #Asteroid (44) Nysa, discovered in 1857, is one of the largest known E-type asteroids. A research team used SHARK-VIS at the LBT & SPHERE/ZIMPOL at the VLT to obtain the highest-resolution images ever taken of one of the Solar System’s most enigmatic asteroids.🔭🧪⚛️ lowell.edu/press-releas...
Images of asteroid (44) Nysa taken in red light on 15 February 2026, after special processing. A small satellite is marked with a pink arrow.
The main body of Nysa has been superimposed for scale.

Image from Minker et al. 2026
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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 04/08/2026
These systems are rare but very useful: the rotational stability of millisecond pulsars (think: very accurate, stable clocks) allows astronomers to perform very precise tests of gravity in three-body systems and to consider how these systems came to be through their evolutionary formation.
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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 04/08/2026
👀👀👀 Ohhhh, this is very exciting science! 🔭 Two independent papers are reporting updated details of the PSR J0435+3233 system: it's a triple! Features a millisecond pulsar + a helium white dwarf and now a Sun-like star. arxiv.org/abs/2607.27462 arxiv.org/abs/2608.01227
arxiv.org
On the triple nature of the PSR J0435+3233 system
Context. The recent pulsar timing ephemeris of PSR J0435+3233 indicates that this millisecond pulsar (MSP) has a spin-down rate that is much higher than observed in other MSPs and challenges our under...
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Nereide @drnereide.bsky.social · 01/08/2026
1/11 #JWST has revealed something unprecedented about Neptune. For the first time we have spectra of three small inner moons (Larissa, Galatea, Proteus) and the rings. 🔭 Their composition is unique in the outer Solar System.⚛️🧪 www.caltech.edu/about/news/n... #planetsci #Astronomy #Science
Diagram showing the proposed origin of Neptune’s present-day small inner moons and rings. An earlier system of large moons is shattered when Triton, a captured Kuiper Belt object, arrives. The breakup exposes clay minerals from the deep interiors of those ancient bodies; a small fraction of the resulting debris later reaccretes into the moons and rings we see today. 

Credit: R. Davis
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NSF–DOE Rubin Observatory @rubinobservatory.org · 30/07/2026
Access to Cerro Pachón remains our primary challenge. Accumulations of up to 3 meters (10 feet) of snow and muddy conditions have slowed progress to the summit. Heavy equipment is being mobilized to clear the roads.🔭🧪
Workers in bright orange safety gear with a white pickup truck and a bulldozer clearing snow on a muddy mountain road. Credit: NOIRLab/NSF/AURA
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NSF–DOE Rubin Observatory @rubinobservatory.org · 30/07/2026
Chile Storm Recovery Update: 30 July 2026 Recovery efforts continue at NSF NOIRLab’s facilities in Chile, which include NSF–DOE Rubin Observatory, after historic winter storms across the Coquimbo Region. Full recovery will take several weeks, but teams are making progress. 🔭🧪
Illustration of a boot-shaped observatory against a dark blue background. Bilingual text reads "Severe Storms Impacting Rubin Operations in Chile: 30 July 2026 update. Sistema frontal impactó las operaciones de Rubin en Chile: Actualización del 30 de julio de 2026."
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Dakota Smith @weatherdak.bsky.social · 27/07/2026
Satellite view of the storm that produced a tornado that hit Appleton and Menasha, Wisconsin.
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AAS Press Office @press.aas.org · 27/07/2026
NASA: MAVEN Illuminates New Understanding of Auroras at Mars science.nasa.gov/missions/mav...
science.nasa.gov
NASA’s MAVEN Illuminates New Understanding of Auroras at Mars - NASA Science
NASA MAVEN (Mars Atmosphere and Volatile Evolution) mission scientists have uncovered a key puzzle piece in understanding certain types of auroras on Mars,
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Kristian Claus @kristianclaus.bsky.social · 25/07/2026
I checked. Soft-rock DJ Delilah has not played a Green Day song. Yet.
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Reposted by Kristian Claus
Jason Wright @astrowright.bsky.social · 22/07/2026
On the contrary, this object is not just a moon, it is a moonmoon! Specifically, it is the moonmoon brown degenerate "star" CD-35 2722 Bb. The system is dynamically equivalent to the system in Figure 2 here: arxiv.org/abs/2303.18217
arxiv.org
A Unified Nomenclature and Taxonomy for Planets, Stars, and Moons
I solve the problem of nomenclature of planets, stars, and moons, and in doing so repair two of the IAU's blunders. Drawing and improving upon foundational work by Chen & Kipping, I describe a single,...
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ESO @eso.org · 22/07/2026
That's no moon. It's a...hang on, what should we call it? 🤔 Our VLT has revealed evidence for a moon-like object in the CD-35 2722 system. Yet this new ‘exomoon’ detection is challenging cosmic labels! 🔭 🧪 #exoplanets 1/4
The artist's impression features a small star (left) and two gaseous bodies (centre and right), set against the blackness of space. Credit: ESO/M. Kornmesser.
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Kristian Claus @kristianclaus.bsky.social · 21/07/2026
I just learned the meaning of Agamemnon’s Helmet. 🫥
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Kristian Claus @kristianclaus.bsky.social · 17/07/2026
Before seeing The Odyssey, do I need to read all 8 parts of the Epic Cycle?
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