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Prikvačeni tweet
T'was the night before Christmas, when all through the house.. Oh, never mind.
#MerryChristmas everyone! Evidence of a dynamically evolving Galactic warp — https://arxiv.org/pdf/1912.10471.pdf … by Eloisa Poggio & Co.
#MilkyWay
#GaiaDR2pic.twitter.com/WER86KXF3I
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Hey, not only astronomers love the dark.
#TurnOffTheLightshttps://twitter.com/IDADarkSky/status/1225092863324835840 …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
I live about 10km from Turin, a city of over a million people and can see them. I keep seeing this "5th magnitude" estimate in print, but they are at least 4th magnitude, and you don't need "much darker skies" to see them.
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This is a good article, but 1) it's not new, but a reprint of an article issued on 20 Jan 2) it incorrectly reports that at operational altitude
#Starlink sats will, "dim to about fifth magnitude, visible to the naked eye only in much darker skies away from cities." ..(1/2)https://twitter.com/Astro_Jonny/status/1224740935113854977 …Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
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While not immediately obvious from the text, there's a lot of
#GaiaDR2 behind this impressive piece of work. Also, as pointed out by@spacetimekatie, 40 "dark" companions!#GoGettemGaia!https://twitter.com/adrianprw/status/1224714481240039424 …
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Local cosmology with
#GaiaDR2, raising the question: does the#MilkyWay have a peculiar history?https://twitter.com/astroriley/status/1224370145147179008 …
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Ronald Drimmel proslijedio/la je Tweet
More than 1,500 astronomers have now signed a petition calling for mega constellations like SpaceX's Starlink to be stopped, potentially via legal action, before their impact on astronomy can be assessed. Story from me
@NewScientisthttps://www.newscientist.com/article/2232324-legal-action-could-be-used-to-stop-starlink-ruining-telescope-images/ …Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
The
#MilkyWay,#Jupiter and a natural hottub@YellowstoneNPS (You need to click on the image to fully appreciate.)https://twitter.com/Cmdr_Hadfield/status/1224027448377036802 …
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#GaiaMission finding an "invisible" binary system. Are#BlackHoles next? The paper on this extraordinary microlensing event is here: https://www.aanda.org/component/article?access=doi&doi=10.1051/0004-6361/201935097 … (The figures are confused in the online version, but you can download the pdf.)https://twitter.com/coreyspowell/status/1224294316132241408 …
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Progress?
We'll see.
An interesting detail: Two soon-to-be-published papers presented on #Starlink's visibility problem and potential impact to observations. But, lest it be forgotten, this is NOT just about astronomy.https://twitter.com/heidi_teaman/status/1223399779683749888 …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
More on estimating the
#MilkyWay mass. (Mind your bias.)https://twitter.com/deniserkal/status/1223255943024140289 …
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Ronald Drimmel proslijedio/la je Tweet
Wait, this doesn't happen all the time? https://twitter.com/MathsEdIdeas/status/1222957651429969923 …pic.twitter.com/3khRgtmWmQ
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"Even in their final orbits at much higher altitudes, Starlinks remain at magnitude +5.." I've seen
#Starlink sats at their operating altitude of 550km, and they were definitely brighter than 4th magnitude.. This is not just about#astronomy.https://twitter.com/StartsWithABang/status/1222777799385079808 …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
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Ronald Drimmel proslijedio/la je Tweet
#GaiaDR2 keeps on delivering! Our new paper is now on the ArXiv: https://arxiv.org/abs/2001.10012 In the work led by@AntojaTeresa we have detected the Sagittarius stream all around the sky from proper motions alone. The result: a ~300.000 stars sample (dwarf+tails) [1/3]pic.twitter.com/jxqgcqGzHJPrikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
"The Gaia-Kepler Stellar Properties Catalog"
#GaiaDR2 +#Keplerhttps://twitter.com/DrReneHeller/status/1222061906502082561 …
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Ronald Drimmel proslijedio/la je Tweet
With today's launch,
#Starlink now has (by my count) around 250 satellites in orbit. By the end of the year, it could be pushing 1,000. But are the world's systems for controlling space traffic up for the volume of new satellites? Critics say no.https://www.npr.org/2020/01/29/800433686/space-traffic-is-surging-and-critics-worry-there-could-be-a-crash …Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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