weird.wolf, to nature
grb090423, to random
@grb090423@mastodon.social avatar

Sleeping giant surprises Gaia scientists.

"This is the first time a black hole of stellar origin this big has been spotted within the Milky Way. "

https://www.esa.int/Science_Exploration/Space_Science/Gaia/Sleeping_giant_surprises_Gaia_scientists

largess, to climate
@largess@mastodon.au avatar

Tenth consecutive monthly heat record alarms and confounds climate scientists | Climate crisis | The Guardian

https://www.theguardian.com/global/2024/apr/09/tenth-consecutive-monthly-heat-record-alarms-confounds-climate-scientists

>But based on preliminary analyses, he said these factors were not sufficient to account for the 0.2C increase: “If the anomaly does not stabilise by August – a reasonable expectation based on previous El Niño events – then the world will be in uncharted territory. It could imply that a warming planet is already fundamentally altering how the climate system operates, much sooner than scientists had anticipated.”

>The core of the problem – fossil fuel emissions

I don't agree, the core of the problem is human behavior, still plenty of people in here flying, driving etc and clutching their pearls. A good perspective here from physicist Tom Murphy

https://dothemath.ucsd.edu/2024/04/distilled-disintegration/


Faster then the median perhaps but there's plenty of "hot models" saying it's to be expected and temps are looking like they're accelerating, yo'ud think the precautionary principal alone would motivate peoples voting and actions but alas...

stekopf,
@stekopf@mstdn.social avatar

@largess @jackofalltrades

Tom's conclusions reminded me of this comic that describes our situation perfectly, especially how we completely miss the point.

http://humoncomics.com/mother-gaia



[edit: ALT text]

pomarede, to space
@pomarede@mastodon.social avatar

Gaia unravels two ancient streams of stars in the Milky Way

The two streams, named Shakti and Shiva, helped form the infant Milky Way. Both are so ancient that they likely formed before even the oldest parts of our present-day galaxy’s spiral arms and disc.

This image shows the location and distribution of Shakti (yellow) and Shiva (blue) stars throughout the .

https://www.esa.int/Science_Exploration/Space_Science/Gaia/Gaia_unravels_the_ancient_threads_of_the_Milky_Way

grb090423, to random
@grb090423@mastodon.social avatar
vicgrinberg, to Astro
@vicgrinberg@mastodon.social avatar

The main job of 's space telescope is to map our own galaxy in exquisite detail - but while doing so, is can also map the whole universe!

Using Gaia, we can map the distribution quasars - brightly shining centers of galaxies hosting supermassive black holes - across the universe, all the way back to just 1.5 billion years after the big bang or 12.3 billion years ago ...

More info & link to original paper:

▶️ https://www.esa.int/ESA_Multimedia/Images/2024/03/Gaia_maps_largest_ever_collection_of_quasars_in_space_and_time

A pretty complex infographic showing an accreting quasar, the distribution of matter since the big bang and the Gaia map.

mattotcha, to Astronomy
@mattotcha@mastodon.social avatar
mountainwitch, to politics
@mountainwitch@kolektiva.social avatar

I wake up every morning with anxiety and exhaustion. The combination is nearly debilitating some mornings. I think about the natural world struggling to survive air pollution, plastic pollution, soil depletion, pollutant runoff into our waterways and oceans, the whirl of climate collapse as we see it happening around the world. I see the monetization of every action, every thought, every need, the politicization of every organizational structure, every dream, every cause. I see the exploitation of those that struggle to survive, pushing labour onto others, the force of power structures to rule our lives as burn-out overtakes us. I see and acknowledge others with a much heavier load of racism, bigotry and marginalization than I have dealing with all of this in addition. And I see many that are giving up, on the brink of ending their existence, or mentally and emotionally checking out. The exhaustion is across the board, putting one foot in front of the other is too high a mountain to climb.

If I... we... all of us give up and give in to this upside down world, who will be there for the littles? My 3 year old grandson that looks up at the world with hope, trust and innocence expects me to be there for him. And I am, and I will be. My animals trust that I will love and feed them and I will. This small plot of land I live on Turns the Wheel with me or without me. It will face whatever the future throws at it and it will adapt, grow when it can, rest when it must, and always strive for abundance. It's the least I can do to match the effort of the land while being a part of it, the planet and the universe.

Some day all the systems of greed will destroy themselves, and many of us with it. But we don't have to go resignedly or without a fight. We can Turn our own Wheel, be the Gods and Goddesses that we were born to be. We can use every resource, every source of knowledge, every act of will, and every force of love to continue on through the exhaustion and despair. This life, this land, this Earth is magic and we are a part of it, now and forever. Sometimes I forget, and then I remember.

TriciaScott, to climate
@TriciaScott@toad.social avatar
thesweetcheat, to random
@thesweetcheat@toot.community avatar

Fantastic but a little sobering to see the wonderful Gaia in Tewkesbury Abbey this afternoon. A salutary reminder that there's no Planet B.

Stef_Astro, to Skydiving French
@Stef_Astro@astrodon.social avatar

A team of researchers from Strasbourg ´s Observatory has selected 41 bright astrometric binaries from the 3rd Gaia data release (-DR3) that could also be eclipsing and double-line spectroscopic binaries (SB2).
Photometric observations from amateur astronomers to cover effectively are needed.
Join the project !
Details on
https://proam-gemini.fr/suivi-detoiles-binaires-a-eclipse/#EN

glynmoody, to random
@glynmoody@mastodon.social avatar

Weather tracker: Saudi Arabia hit by floods as temperature records broken in Canada - https://www.theguardian.com/environment/2024/jan/01/weather-tracker-saudi-arabia-hit-by-floods-as-temperature-records-broken-in-canada "Heavy rain and hailstorms affect large parts of Gulf state while temperatures in some parts of Canada could be 20C above normal" and so it begins in 2024

greenaspen,
@greenaspen@mastodon.scot avatar

@glynmoody
sending targeted messages to ?
Makes sense. Where’s next?

spaceflight, to Astronomy
@spaceflight@techhub.social avatar

• Our understanding of was established by in 📆 1687.

• In 📆 1915, published "The General Theory of ."

was first theorized in the 📆 1930s to explain movements of 🎇 and 🌌 that couldn't be explained by Newton's laws of gravity.

• Modified Newtonian dynamics () was first proposed by Mordehai Milgrom in 📆 1983. https://www.youtube.com/watch?v=Qkl2ASn9yyA

• Recently, a new study has found direct evidence for a modified theory of gravity based on telescope 🔭 observations.

https://interestingengineering.com/science/new-study-challenges-einstein-and-newtons-theories-of-gravity

lostgen,
@lostgen@det.social avatar

@spaceflight
There is an even more recent paper that in detail shows that wide binary stars are actually evidence against modified gravity.

revesdespace, to random French

🎂🚀🛰️ Ce 19 décembre, il y a déjà 10 ans, le télescope spatial de l’ESA décollait du Centre Spatial Guyanais à bord d'une .
Une mission qui révolutionne l'astronomie ✨
Pour l'occasion, le consortium a sorti un nouveau logo

bevanthomas, to random
@bevanthomas@mstdn.ca avatar

Whenever Gaia, the Earth of Greek myth, saw one of her sons become a tyrant and mistreat her other children, she would inspire a rebellion. Unfortunately, whoever became the new supreme ruler would mistreat some of Gaia's other children, forcing another rebellion.

bevanthomas,
@bevanthomas@mstdn.ca avatar

Image: The Gigantomachy (Giant War) Frieze with Gaia (bottom-right) rising out of the ground. Pergamon Altar, Pergamon museum, Berlin.

vicgrinberg, to random
@vicgrinberg@mastodon.social avatar

And another cool job with Directorate of Science - again freely choosing between ESAC, Villanueva de la Cañada, Spain or ESTEC, Noordwijk, The Netherlands as your main location: project scientist!

▶️ https://jobs.esa.int/job/Noordwijk-Project-Scientist/994659001/

There are at least two more exciting data releases forthcoming https://www.cosmos.esa.int/web/gaia/release - that's your chance to take a leadership role in them!

heiseonline, to random German

Weltraumteleskop Gaia: Masse der Milchstraße drastisch kleiner als angenommen

Gaia vermisst die Milchstraße mit bislang unerreichter Präzision. Nun legen die Daten nahe, dass sich die Sterne hier anders verhalten als in anderen Galaxien.

https://www.heise.de/news/Weltraumteleskop-Gaia-Masse-der-Milchstrasse-drastisch-kleiner-als-angenommen-9332575.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege

vicgrinberg, to random
@vicgrinberg@mastodon.social avatar

A new data release from 's - disentangling the cores of globular clusters, accidentally doing cosmology, tracking asteroids, diffuse interstellar matter and a catalogue of pulsating stars.

LOTS of cool science including using observation modes that were not planned for science originally 🤯 (see blurb from @minzastro in the article!)

➡️ https://www.esa.int/Science_Exploration/Space_Science/Gaia/New_Gaia_release_reveals_rare_lenses_cluster_cores_and_unforeseen_science

jgpausas, (edited ) to Worldbuidling
@jgpausas@fediscience.org avatar

This reminds me of the (the model developed by to demonstrate the hypothesis), where black daisies (, etc) reduce & warm the planet. But we lack white daisies for the negative ! We are in the positive phase! (eg Box 1 in https://sciencedirect.com/science/article/pii/S0169534722000611)

FROM @nickcowern: Earth has darkened significantly over the last 20y; satellite data show a roughly 2% reduction in reflected sunlight

@climate @ecology

raymccarthy,
@raymccarthy@historians.social avatar

@jgpausas @nickcowern @climate @ecology
But surely and the hypothesis was just a new take on old religion and ultimately pseudo science.

technoshaman001, to astrophotography

I took this photo in front of my house in rural there is little in this area
I hope you enjoy, feel free to zoom in and explore!

We live in such a beautiful reality, I am mesmerized by how many beings of light shine and glow throughout the darkness between us, it's as if the stars are reaching out and touching us.

vicgrinberg, to fediverse
@vicgrinberg@mastodon.social avatar

1/16 This July, I gave an invited talk in the "Communicating Science Through Art" session at the European Astronomical Society annual meeting, organized by the amazing @theastrophoenix . And I thought it may be something that would also interest you folks.

The aim of the talk was partly to give people insight into my why & how of my art. But mainly to encourage others to just try. In a very subjective manner.

A thread: 🧵

vicgrinberg,
@vicgrinberg@mastodon.social avatar

12/16 Then there is of course "science fun" - whether it's celebrating the mission or visualizing the No Hair Theorem. It just that: fun. A way to geek out with colleagues. Or just for myself.

(But it's better with colleagues, I am the kind of artist who thrives of feedback - and yes, this makes me wonder whether I'm not really an artist since I can't just do stuff for myself mostly. As promised, this talk was about vulnerability and self-doubt.)

fraser, to random
@fraser@m.universetoday.com avatar

Gaia is Now Finding Planets. Could it Find Another Earth?

The European Space Agency's Gaia mission characterizes the position and movements of more than a billion stars in the Milky Way. It uses a technique called astrometry, measuring a slight change in the position of stars from year to year, and it's so sensitive it has even detected the gravitational wobble planets induce on their stars. How far could this technique go? According to a new paper, an extremely precise astrometry mission could detect the Solar System's giant planets within about 100 light-years and even find Earth within 30 light-years.

https://arxiv.org/abs/2309.11729

technoshaman001, to Dogs

Dogs are more than best friends, they are teachers. They don't need dominance, they need understanding - in return they will give you unwaivering loyalty and respect and love 💕

has blessed me with throughout my life and I am very grateful to have met many beautiful souls through my journey.

Do you have any special dogs in your life??

image/jpeg
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