#sdss

[dilfdoney]

Part 1

Mission success?? Maybe??

[elffromforests]

I have a mini dream. I really want Benjamin Walker and Mark Ferguson to meet on stage one day somewhere at the Magic Con / SDSS and shake hands, and all this to the accompaniment of thunderous applause from the audience

You just imagine 2 GG 🤩

[overthinkingtaleblr]

Trying to make some designs and backstories for Darth Calculus specifically, but also the two characters I have that I consider closely associated (and to an extent, victims) of Chakalata.

Decided to make Goober Katrina and Johnny Roast’s older brother. It’s gonna make more sense when I finally write down my idea of Goober’s backstory. Ennis on the other hand is my idea for SDSS’s “permanent host”, so far the idea is that the two co-exist— like venom and Eddie. They might be a demigod… And Darth Calculus is just a man afraid of his own mortality to the point of removing everything that makes him human.

[astrophysicsandpython]

How To Estimate Stellar Parameters From MaStar Data

In this post we determine the mass, radius, and luminosity of the star given its effective tempreature and log surface gravity from the MaStar catalog file. For the given effective temprature, its black body curve is also fitted on the given spectra.

In the previous post we discussed some relationships between the stellar parameters, namely Mass-Luminosity relationship,Luminosity-Radius-Temperature relationship (Stefan Botzmann law), andGravity-Mass-Radius relationship (Newton’s gravitational law). The relationships for determining the mass, luminosity, and the radius of the stars given their effective temperature and surface gravity are as…

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[startswithabang]

Record-Breaking 3D Map Of The Universe Reveals Some Big Surprises

“The Universe is not curved on the largest scales, but is spatially flat to 499 parts in 500: the tightest constraint ever. The Universe not only needs dark energy, but it makes up 70% of the Universe and is perfectly consistent with a cosmological constant. Of the other 30%, 25% is dark matter and just 5% is normal matter, with the Universe expanding at 68.2 km/s/Mpc. This is based on over 2 million galaxies observed from nearby to in excess of 19 billion light-years away, corresponding to more than 11 billion years of cosmic history.

In the coming years, the Dark Energy Spectroscopic Instrument (DESI) will take us to tens of millions of galaxies, with even greater advances coming with the launch of ESA's Euclid, NASA's WFIRST, and the NSF's ground-based Vera Rubin Observatory. There are now three major players in the quest to measure the expansion of the Universe: the Cosmic Microwave Background, the cosmic distance ladder, and the imprint of acoustic oscillations in the Universe’s large-scale structure. The first and third methods agree with each other, but not with the second. Until we figure out why, along with the puzzles of dark matter and dark energy, this will remain one of the most compelling mysteries about the very nature of our cosmos.”

More than 2 million galaxies have been exquisitely measured, corresponding to distances of more than 19 billion light-years and lookback times that take us 80% of the way back to the Big Bang itself. In many ways, it’s the most comprehensive map of the structure in the Universe ever constructed.

So what does it teach us? Dark energy is real and constant. So is dark matter. The Universe is really 13.8 billion years old. And the expansion rate? It’s still the biggest controversy of all. Here’s why.

[cldrb]

NGC 1234 é uma galáxia espiral barrada peculiar com um anel de gás na constelação do Eridano. . NGC 1234 is a peculiar barred spiral galaxy with a gas ring in the constelation of Eridanus. . Credit: SDSS . #galaxy #galaxia #ngc #1234 #sdss #astronomia #astronomy #astrogram #astro #picoftheday #instagood #instadaily https://www.instagram.com/p/B7hdUuHJJbr/?igshid=1u26kuzz553n1

[cookiesandcrumbs]

"I'm a century old vampire, try me bitch"

[fishstickmonkey]

Astronomers used the Sloan Digital Sky Survey (SDSS), carried out by a 2.5-metre wide-angle optical telescope at Apache Point Observatory in New Mexico, USA, to look for supernovae. The explosion named iPTF16geu can be seen left of the centre of the image as a tiny red dot. Credit: ESA/Hubble, Sloan Digital Sky Survey

(via The SDSS view on iPTF16geu | ESA/Hubble)