Prof. Josep M. Trigo-Rodríguez

When a sample return mission from #Ceres?
#Astrobiology #PlanetSci

2) As bonus track the image of the green coma a half hour later, just during twilight. Really beautiful!

AI used by Kent student to find possible cave entrances on Moon The University of Kent says the pits may be able to support human survival on future space missions.

AI used to find possible cave entrances on Moon. 🔭 🧪 www.bbc.co.uk/news/article...

Lastly, that bright streak in the Navcam images is actually Phobos. See below for a short analysis of this image.

It's very sad that NASA isn't able to put the record straight with the current political chaos.

bsky.app/profile/stim...

COMET #C2025A6 #LEMMON WITH ITS TAIL THIS MORNING in a stacked image of 35 images, 10 s exp.each. Despite the Full Moon interference, really beautiful green coma through the telescope in +6 mag. A pleasure enjoying this fascinating moment with my wife.
To find it
theconversation.com/dos-nuevos-c...

So sad of watching such a level of demential #Chaos in #US streets right now. Too many videos of paramilitary at work, kidnapping citizens.
Her husband is hopefully back home, but how many others won't be ever back...
#EvilWillBeProud #EvilAtWork

COMET #C2025A6 #LEMMON THIS MORNING from #MontsenyObservatory
The coma is already about 10 arcmin wide, and +5.9 V magnitude. I share a 10 s exposure image where it compares with +3.1 mag. Tania Australis (mu UMA) M0 star. Description+charts to find it
theconversation.com/dos-nuevos-c...
#PlanetSci

#comet C/2025 A6 Lemmon on Oct. 1. Tail structure is already very nice. Unfortunately just 12 x 120s before the fog rolled in this morning. Astro-Physics AP130GTX refractor at f/5. ZWO ASI2600MC, tracked on the comet. #astronomy #astrophotography #solarsystem #comets #comettail #space

A comet with a tail among the stars. The green gasy coma is about 10 arcminutes across. The ion tail extends beyond the edge of the frame. Equipment: GSO N203/800 with TS GPU cc, AZ-EQ5, unmodified Olympus E-PL5. Exposure: 100x30s, from B4 skies of eastern Crete. Edited with DSS, SIRIL and GIMP.

A nice clear sky helped me photograph comet C/2025 A6 (Lemmon) on 1 October 2025. The ion tail is becoming brighter and full of streamers and the dust tail grows. #cometWatch #astrophotography

A nebula with red and blue colors faintly glows in the light of a very bright star.

The Ghost of Cassiopeia nebula. Cassiopeia (the bright star) is an Ethiopian queen in Greek mythology. Her star illuminates nearby dust clouds, imparting a ghostly, ethereal appearance.

Image credit: my tiny telescope (about 4 hours of light collecting).

#science #astronomy 🔭👩🏾‍🔬

MOSAICO DE IMÁGENES mostrando la evolución del cometa #Lemmon durante los últimos meses. Indica la distancia al Sol (R) y a la Tierra (D) en Unidades Astronómicas (u.a.). Lo tenemos ahora en el amanecer en el límite a simple vista 🤩
📷 Dídac Mesa Romeu desde #Castelló/#Castellón

GRAN BÓLIDO ESPORÁDICO #SPMN041025L REGISTRADO SOBRE #ALBACETE ANOCHE a las 23h56m13s TUC (1h56 CEST de hoy). Así lo registró Jordi Donet @jordidonet.bsky.social desde Barx-La Drova, #València. De origen cometario, se desintegró en altura dejando una preciosa estela
▶️ www.ice.csic.es/news/citizen...

Spectacular #Taurid #Fireball in front of #Portugal last night. Amazing nights for wide-field #astrophoto 🤩
#PlanetaryScience

Thanks. Indeed Mare is a "basaltic" Sea 😉

Epsss!! Això és d'aquí a una estoneta. Si sou a prop no deixeu de perdre l'ocasió. 🧐👇

FOR ALL FRIENDS OBSERVING THE #MOON TONIGHT: Just sharing with you the main features visible on our satellite over this weekend (craters in bold, Lunar maria in cursive)
Join the closest outreach initiative to enjoy it through the telescope🌔🔭🤩
#InternationalObserveTheMoonNight #Moon #PlanetSci

I'm also expert in comets, so I know well what is +6.5 magnitude, in the limit of naked eye visibility. Anyhow, it is great promoting more observations. Now it it is just starting to be seen at naked eye in perfect sky conditions. In fact I saw it yesterday very easily using binoculars on Bortle 4

Warp Speed! How Some Galaxies Can Move Away from Us Faster Than Light When space itself expands, weird things can happen—like galaxies breaking the universe’s ultimate speed limit

Faster than light travel is possible… kinda. Distant galaxies are receding from us at superluminal speeds. How can that be, and how can we see them if they're flying away faster than the light they emit?

Even weirder: to them, *you*re* moving FTL!

www.scientificamerican.com/article/how-...

🔭🧪

#Comet #Lemmon #C2025A6 is already a naked eye object!

theconversation.com/dos-nuevos-c...

Image on 2025-10-03 2.24 UT RGB 25min, Zeiss-Milvus f-135/2.8 Asi 294 field 8x6°
by Michael Jäger & Gerald Rhemann
#Wov!🤩

Starplot Star charts and maps of the sky in Python

I've found a really good Python library to create your own Sky Maps: starplot.dev. Really amazing to prepare observation nights. And great support of his developer, Steve Berardi.

#AstroMethods

TSD: An inverse problem approach for recovering the exoplanetary atmosphere transmission spectrum from high-resolution spectroscopy Our ability to observe, detect, and characterize exoplanetary atmospheres has grown by leaps and bounds over the last 20 years, aided largely by developments in astronomical instrumentation; improveme...

Paper day!

You're doing ground-based high-resolution exoplanet transmission spectroscopy and want to analyse the planet—not the star or Earth's atmosphere.

Is there a way to disentangle your spectrum *without* destroying the planet signal?

arxiv.org/abs/2509.12737

🧵⬇️

🔭 #exoplanets #astromethods

Orionid meteor shower: How to see it Get to an area with low light pollution and look towards Orion to see the meteor shower, says BBC Weather's Sophia Herod.

How to see the Orionid meteor shower. 🔭 🧪 www.bbc.co.uk/news/videos/...

Nuestro trabajo en Cosmología. Cap. 2: Los Cartografiados. Se incluye una imagen de la luna a gran escala detrás de un observatorio (Credit: M. Hernández/H. Stockebrand)

COSMOLOGÍA cap. 2: Los cartografiados

Hoy es queremos contar qué son los cartografiados cosmológicos y contaros un poco cómo los utilizamos (son muchas cosas, así que iremos poco a poco)

#galaxy #galaxias #cosmologia #universo #divulgación

A picture of Mars taken during astronomical twilight (the sun was 13° below the horizon). It shows a dimly lit reddish landscape with some hills at the horizon. Deimos, Mars' smaller moon shines with a small halo in the pale sky above.

This photo from the Perseverance rover captured in early March, may be my favorite Mars image from this year.

It shows Mars' smaller moon Deimos over the hills of the Nili Planum region in the dark skies before dawn. 🔭

Full res: flic.kr/p/2rwUwV7

Credit: NASA/JPL-Caltech/Simeon Schmauß

#Comet 𝟮𝟬𝟮𝟱 𝗔𝟲 (𝗟𝗲𝗺𝗺𝗼𝗻) is getting bright. It will be

Beautiful image by
📷 Aleix Roig @astrocatinfo.bsky.social on Oct.2 ☄️

I wrote this article in @es.theconversation.com to find it:
theconversation.com/dos-nuevos-c...

Just prepare your telescopes and cameras, be ready for this beauty!

PRECIOSO BÓLIDO #SPMN290925G ANOCHE FRENTE LA COSTA NORTE DE MALLORCA a las 20h45m36s TUC (22h45 CEST). Así lo registró Pau Montplet @astrobreda.bsky.social #AstroMontseny desde Breda, #Girona. Un evento reportado en Twitter al listado del @ice-csic.bsky.social:🤩🌠
➡️ www.ice.csic.es/news/citizen...

ESPECTACULAR BÓLIDO #SPMN011025E SOBRE #CÓRCEGA ESTA MADRUGADA a las 3h52m15s TUC (5h52 CEST), captado junto a #FRIPON. Destacó incluso desde >600 km de distancia, como ejemplifica el vídeo de Jordi Gil @jgil65.bsky.social desde Esparreguera, #Barcelona. Listado🌠🤩:
➡️ www.ice.csic.es/news/citizen...

The location in the sky of the K2 stars of the study together with the full sample of Gaia (orange) and Kepler (grey) solar-like rotators

It is paper time ! If you wondered how the Gaia catalogue of solar-like rotators compared with the stars observed by the Kepler/K2 missions here are some elements of answers !
Here is the link to the article we published in A&A:
www.aanda.org/articles/aa/...

#stellarastro

We've all heard, and probably believe, that at least one benefit of CO2 is that it will be good for plants. And sometimes, it will be. Or at least, it was. Some titles cut to save space. -- Point 0: FACE vs greenhouse studies: (Long 2006) "Food for Thought: Lower-Than-Expected Crop Yield Stimula How Rising CO2 Affects Plants: The Full Story

this is a really good video about how increases in CO2 affect plant growth. the channel only has a few dozen subscribers, which is criminal.