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#herschel

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Verfassungklage@troet.cafe

#Rätsel der #Astronomie gelöst?

Vor mehr als zehn Jahren hat das #Weltraumteleskop #Herschel die Arbeit eingestellt. Dank einer neuen Analyse haben dessen Daten nun womöglich ein Rätsel gelöst.

Eine #britische #Forschungsgruppe hat in der tiefsten #Fern-Infrarotaufnahme des #Universums so unerwartet viele, bislang unsichtbare #Galaxien entdeckt, dass die Bestätigung des Funds "gegenwärtige Modelle zur Zahl und Entwicklung von #Galaxien sprengen würde".

heise.de/news/Raetsel-der-Astr

heise online · Rätsel der Astronomie gelöst? – Zu viele Galaxien in alten Aufnahmen entdeckt
More from Martin Holland
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Daniel Fischer

The Herschel-SPIRE Dark Field I: the deepest #Herschel image of the submillimetre Universe & II. A P(D) fluctuation analysis of the deepest Herschel image of the submillimetre universe: academic.oup.com/mnras/article & academic.oup.com/mnras/article -> 'Hidden galaxies' could be smoking gun in universe riddle: ras.ac.uk/news-and-press/resea

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Dr. Victoria Grinberg

Caroline #Herschel was an absolutely fascinating woman: stunted by a childhood encounter with typhus, she was actively stopped from learning more by her mother. Yet, she prevailed, becoming the first woman to get a salary as a scientist and the first woman to be employed by the government in England:

en.m.wikipedia.org/wiki/Caroli

The Royal Astronomical Society and the German Astronomical Society are jointly awarding the Caroline Herschel medal

ras.ac.uk/awards-and-grands/ca

Caroline Herschel portrait: (1750-1848) astronomer and sister of William Herschel
#astrodon#WomenInSTEM
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Phil Stooke

I answered my first map question in a separate post. Back to Herschel: his map has no coordinates but coordinates can be approximated. I projected the Herschel map into a cylindrical projection and then into two equator-centred azimuthal projections making the best match I could to modern coordinates. My intention was to take a variety of historical and recent maps in different projections and display them all in a common format for comparison. #maps #Mars #Herschel

William Herschel's map of Mars reprojected into an equator-centred pair of azimuthal projections, roughly matched to modern coordinates.
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Phil Stooke

Here is Herschel's actual map (left). I compare it with a mid-20th Century map in the same projection (azimuthal, extending from the south pole at centre to the mid-latitudes in the northern hemisphere). There's no coordinate grid but it vaguely resembles the more modern map. It's the first map of Mars, but not the first map of another planet. Anyone care to speculate who made the first map of another planet, and which one? #maps #Mars #Herschel

William Herschel's 1784 map of Mars (left) and a mid-20th Century map in the same (approximate) geometry (right). I will identify the more modern map when we get to it in the sequence.
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Phil Stooke

William Herschel made this first Mars map by rotating his drawings so he could join them at the south pole and arrange the drawings like petals of a flower. This drawing shows the concept. He had more than 4 pictures, some of which filled in a gap in coverage in my set, but you get the idea. A bit of fudging to join features properly, and you could start to make a pole-centred map. He did it better - that's why he was a Sir and I'm not. #maps #Mars #Herschel

The same 4 drawings of Mars arranged like petals of a flower, aligned roughly on the south polar ice cap. There should really be at least 5 of these drawings to make it more accurate, but this shows the idea Herschel had.
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Phil Stooke

Let's join some of Herschel's images together. Here are 4 from the bottom row of the previous image, rotated to put the small south polar cap at the bottom and aligned along the equator. This is not really the correct geometry, just a thought experiment or 'a concept of a map'. I added the 19th Century names. Thoth-Nepenthes is less prominent now than it was then. With some fudging to merge them you could make a rough map. Herschel didn't do this, however. #maps #mars #Herschel

Four of William Herschel's drawings of Mars rotated to put the south polar cap at the bottom and aligned to be the start of a rough map of Mars. This would be one way to do it but it's not what Herschel did.
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Spektrum (inoffiziell)

Unterhaltsam erläutert das Autorenteam um Harald Lesch die Entdeckungsgeschichte unserer Galaxie. Lediglich im hinteren Teil fehlt es dem Buch ein wenig an Struktur. Eine Rezension

Das Autorenteam um Harald Lesch ermöglicht mit diesem Buch eine spannende Reise durch die Entdeckungsgeschichte unserer Galaxie. Eine Rezension (Rezension zu Die Entdeckung der Milchstraße von Harald Lesch, Cecilia Scorza-Lesch, Arndt Latußeck)#Milchstraße #All #Universum #Astronomie #Kosmologie #Sternsysteme #Sterne #Galaxis #Andromeda #Herschel #Leavitt #Hubble #Lesch #Spiralgalaxie #Physik
»Die Entdeckung der Milchstraße«: Die Entschlüsselung unserer kosmischen Heimat

www.spektrum.de»Die Entdeckung der Milchstraße«: Die Entschlüsselung unserer kosmischen HeimatDas Autorenteam um Harald Lesch ermöglicht mit diesem Buch eine spannende Reise durch die Entdeckungsgeschichte unserer Galaxie. Eine Rezension (Rezension zu Die Entdeckung der Milchstraße von Harald Lesch, Cecilia Scorza-Lesch, Arndt Latußeck)
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