Photo of the Iris nebula / Caldwell 4 / NGC 7023, I'm very pleased with this one since I finally managed to capture the surrounding dust (barely visible in the 2 previous attempts). This is a reflection nebula, this means that it's a dust cloud reflecting the light from a nearby star. Being one of the brightest reflection nebula visible in the northern hemisphere it's visible in relatively small telescopes (4-6 inch / 100-150mm diameter), unfortunately the outer dust clouds can only be seen on photos. Reflection nebula generally tend to be blue due to a more efficient scattering of blue light compared to red by the dust particles (M45 in my previous post is another good example).
There might not be sound in space, but there is quite a lot to listen to in the radio frequencies (especially when it comes to the planets of the solar system).
(the full article : https://www.jpl.nasa.gov/news/nasas-juno-spacecraft-enters-jupiters-magnetic-field ) Some ''similar'' sounds are also present on earth with for example the reverberation if radio waves emitted by lightning.
I'm trying to find a clean, concise, factual video of pulsar pulses but the top results on youtube are all fake clickbait bullshit. Where are the videos from professor so-and-so with 10 subscribers of simple black and white graphs.
(this page has what I'm looking for but afaik none of these videos are on youtube)
Photo of NGC 7000 / the North American nebula (southern part), the bright star on the top left corner is ξ Cygni. Might rework it later since this one still has a bit too much gradient/haze due to the full moon when I took the photos. In most cases, emission nebula are the result of gas clouds being ionised by the high energy UV radiation coming from very Hot (and often massive) stars/star cluster. In the case of NGC 7000 the star(s) responsible for most of the ionisation was an unknown for quite a long time, it is only in 2004 that the star responsible for the ionisation was located. This star (actually a binary system according to later publication) known as J205551.3+435225 is located behind the dark region of the nebula (bottom right corner of the photo) which explains why it was only recently identified.
(My best guess of the position of J205551.3+435225 in my picture according to what I can find in the original publication and in the SIMBAD database)
One last thing, that star was later nicknamed Bajamar Star, which comes from the original Spanish name for the Bahamas island.
I've worked in a chemistry lab, they had a room with all the analysis and purification equipment. There was a constant noise due to the various pumps (vacuum, solvent, ...) and valves. After just a few days working there I could telle exactly with machin was doing what task and at what point it was in that process just based upon the noise they made.
Photo of Pickering's triangle (also known as Fleming's triangle) and NGC 6979 / NGC 6974 (the more diffused clouds at the top center/left). This is the third part of the Cygnus loop / veil nebula, this part of the supernova remnant is fainter than the previous two parts of the loop I photographed. This explains in part why it was only discovered by in 1904 by Williamina Fleming (whereas the two writer part were discovered in 1784 by William Herschel). Williamina Fleming was a pioneer in stellar classification, she worked with other women at the Harvard college observatory. Their work in star classification resulted in the Henry Draper Catalogue, an extensive (225 300 stars in the first edition) classification of stars with their position and their spectra. Williamina is also credited with the discovery of 59 nebula (including the famous hors head nebula) more than 300 variable stars as well as (with Henry Norris Russell and Edward Charles Pickering) the discovery of white dwarfs (the remnants of dead sun-like stars).
At least viruses are a distinct physical thing, prion on the other hand are just fucked up geometry.
It's just angry geometry that angers the other protein around it. It doesn't even have DNA or RNA!!!
i hate viruses so fucking much. literally getting attacked by a fucking shape. a concept. consumes no energy. responds to no stimuli. its only existence is to fuck with you. like fuck offf
I was able to see and take pictures of the comet C2023/A3 (Tsuchinshan-ATLAS) ! This comet will be visible in the night sky probably for the next week or two, it's currently visible both with a pair of binoculars and with the naked eye. Since it's visible very early after sunset, it's a bit difficult to spot for now, but in the coming days it's will gradually be visible later in the night and thus easier to observe.
This comet is one of the brightest in the last few years so it should be quite easy to observe.
I hope you all get a chance to see it, it's magnificent
This reminded me of the isonitrile freezer at my previous internship.
For those who don't know, isonitriles (aka isocyanides) are a class of compounds that contain this motif:
They are known to smell very bad and many synthesis pathways to those compounds were discovered because of their stench. (I personally think they smell like a mixture of rotten cabbage and burned rubber but more ''artificial'')
So in that lab, we had a freezer dedicated to them, and even with sealed bottles in à -20°C freezers in a separated and ventilated cabinet, you would still be able to detect their odour if you stood next to it (not strongly, but still detectable).
We had to move that freezer to a new lab, it stayed unplugged for 15 to 20 minutes, and in the 5 minutes we need to power it back in the new lab, the entire room had filled with that isonitrile stench (mind you that freezer had not been open during the entire operation). Thankfully we did that on a Friday afternoon and by Monday the smell had disappeared.
Just for reference this is from the MSDS of benzyl isonitrile :
found on a fridge in my lab, haha
As Google has worked to overtake the internet, its search algorithm has not just gotten worse. It has been designed to prioritize advertisers and popular pages often times excluding pages and content that better matches your search terms
As a writer in need of information for my stories, I find this unacceptable. As a proponent of availability of information so the populace can actually educate itself, it is unforgivable.
Below is a concise list of useful research sites compiled by Edward Clark over on Facebook. I was familiar with some, but not all of these.
⁂
Google is so powerful that it “hides” other search systems from us. We just don’t know the existence of most of them. Meanwhile, there are still a huge number of excellent searchers in the world who specialize in books, science, other smart information. Keep a list of sites you never heard of.
www.refseek.com - Academic Resource Search. More than a billion sources: encyclopedia, monographies, magazines.
www.worldcat.org - a search for the contents of 20 thousand worldwide libraries. Find out where lies the nearest rare book you need.
https://link.springer.com - access to more than 10 million scientific documents: books, articles, research protocols.
www.bioline.org.br is a library of scientific bioscience journals published in developing countries.
http://repec.org - volunteers from 102 countries have collected almost 4 million publications on economics and related science.
www.science.gov is an American state search engine on 2200+ scientific sites. More than 200 million articles are indexed.
www.pdfdrive.com is the largest website for free download of books in PDF format. Claiming over 225 million names.
www.base-search.net is one of the most powerful researches on academic studies texts. More than 100 million scientific documents, 70% of them are free
A photo of the comet 12P ponce-brook, taken from my bedroom window. In the middle ages, comets were regarded as omens of great change, generally bad ones. It's only after the discovery of their periodic return (during the 15's to 16's hundred) and later discovery of their nature (big balls of mostly ice and some rocks orbiting the sun) that comets stoped to be feared. Despite that, I still find them to be awe-inspiring.
For those interested, this comet is currently visible with a good pair of binoculars or a telescope if you look in the Andromeda constellation (more information on positions and visibility: https://theskylive.com/12p-info) I would have taken more pictures or a better one if the clouds had not been consistently thwarting any attempts at observation in the last week and a half.
Astrophotographer & chemist, mid 20'sCurrently on the roof yelling at the clouds to get out of the wayMostly astrophotos I've taken, possibly other science related stuff
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