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Pierre Kervella proslijedio/la je Tweet
Henrietta Swan Leavitt, one of many women "computers" at Harvard University a century ago, unlocked the key to our three-dimensional universe using Cepheid variable stars.https://pst.cr/kmE4D
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Thank you
@lailalinke2 and@astrobites for this nice summary of a very interesting paper on the Hubble constant controversyhttps://twitter.com/astrobites/status/1222507476345638913 …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Pierre Kervella proslijedio/la je Tweet
ok fine, the mean values are even lower, it dimmed a little more...
#Betelgeuse#BetelgeuseSagapic.twitter.com/k8WytmYHHV
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Pierre Kervella proslijedio/la je Tweet
This Is What We'll See When Betelgeuse Really Does Go Supernova https://www.forbes.com/sites/startswithabang/2020/01/23/this-is-what-well-see-when-betelgeuse-really-does-go-supernova/ … There are a lot of visual signals that will arrive, but the neutrinos come first, then there's a brilliant but brief spike in brightness, then a slow rise to maximum, a fall-off, and more.
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Pierre Kervella proslijedio/la je TweetHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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Pierre Kervella proslijedio/la je Tweet
Orion et la Licorne, mosaïque de deux séries de poses de 5 minutes, Nikon D810 A, filtre STC et 50 mm à 5.6. Montage vite fait, mais ça donne envie de la refaire sérieusement...pic.twitter.com/0v5RzlPv3d
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Pierre Kervella proslijedio/la je Tweet
Elon Musk, SpaceX Unveil Latest Starlink Plans, Creating An Astronomical Emergency by
@StartsWithABang in@startswithabanghttps://link.medium.com/Td9TSpNEo3Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Pierre Kervella proslijedio/la je Tweet
Bételgeuse hier soir, dans le ciel brumeux de la banlieue parisienne… Jusqu'ici tout va bien : elle est toujours là. Elle est même sacrément impressionnante, malgré sa chute de luminosité, les gens qui habitent dans les parages doivent pas faire les malins, en ce moment…


pic.twitter.com/yTHQ4Bi44m
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Pierre Kervella proslijedio/la je TweetHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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Pierre Kervella proslijedio/la je Tweet
Open call to American lawyers stargazers to look at the possible breach of law. Please spread the words. Let’s save our sky!https://twitter.com/sciam/status/1217830309435183107 …
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The core of the star (in red) rotates 50% faster than the envelope (in green). The rotation period of
#Altair is less than 8 hours, compared to one month for the Sun! This explains its extreme flattening. The@AandA_journal paper is freely available here: https://www.aanda.org/component/article?access=doi&doi=10.1051/0004-6361/201936830 …Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
A new work led by Kevin Bouchaud presents a realistic model of the internal rotation of the star
#Altair! It relies on interferometric@ESO#GRAVITY data and is just published in@AandA_journal. Image: Altair compared to the Sun (PR in French) http://www.insu.cnrs.fr/fr/cnrsinfo/enfin-un-modele-realiste-pour-altair-une-etoile-la-rotation-extreme …pic.twitter.com/YeLxaI4IlE
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Pierre Kervella proslijedio/la je Tweet
And here comes
#Starlink version 2.0 - higher orbits, so visible all night long. Sky pollution isn't just for dawn and dusk anymore!https://twitter.com/OneWebSatellit1/status/1217207478963916800 …
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Pierre Kervella proslijedio/la je Tweet
Joint spectroastrometry and reverberation mapping provide a novel measurement of the distance to the active galaxy nucleus 3C273 and hence the Hubble Constant. Wang et al.: https://www.nature.com/articles/s41550-019-0979-5 …pic.twitter.com/X9rd4b7dZj
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The latest
@AAVSO observations show that#Betelgeuse continues to decrease in luminosity in the visible. But in the#infrared (JH bands) its is constant. It could mean that a lot of dust (transparent in the#infrared) is forming and blocks a big part of the visible star light.Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
I was pleased to be interviewed by
@cdurandparenti on#Betelgeuse for@LePoint magazine (in French).https://www.lepoint.fr/astronomie/etoile-betelgeuse-une-baisse-de-luminosite-n-annonce-pas-une-supernova-09-01-2020-2356998_1925.php …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
It was already 100 years ago...https://www.nytimes.com/1921/11/15/archives/betelgeuse-not-the-biggest-star-michelson-says-antares-outclasses.html …
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#Betelgeuse is in the New York Times !@nytimeshttps://www.nytimes.com/2020/01/09/science/astronomy-supernova-betelgeuse.html …Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Pierre Kervella proslijedio/la je Tweet
Orion from last night, Jan 2, with orange
#Betelgeuse still dimmer than usual. This was shot in the light of the quarter Moon and with high haze adding the natural star glows.@universetoday@rasc@skyatnightmagpic.twitter.com/aMQ02erAiu
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