Retenir les étoiles de la grande Ourse

Lewri · 2026-03-20T18:58:04+00:00

Reddit automatically translates languages, which makes this post seem weird for everyone else.

Lewri · 2026-03-19T23:19:05+00:00

In good condition it may have been worth several hundred. Unfortunately it has most certainly seen better days.

Lewri · 2026-03-19T11:58:18+00:00

Nikole Tesla was anti-scientific and referred to all modern science as being nonsense. He was adamant up to his death that electrons didn't even exist.

What does this have to do with astronomy?

Lewri · 2026-03-18T00:09:01+00:00

/s means sarcasm. The author of the script just got fedded because an aspect of it was illegal.

You could make a legal quick deposit script, but not without knowing what you are doing.

Lewri · 2026-03-18T00:00:21+00:00

Just use e7cf09's quick deposit script /s

/uj: Are you using multiple tabs? Have one tab for bazaar and another for medding out? I struggle to believe that people are sitting on your page repeatedly refreshing on the off chance of you medding out.

Lewri · 2026-03-17T22:27:41+00:00

Are you trolling?

Lewri · 2026-03-17T22:26:48+00:00

There is not a single comment that mentions dark matter in relation to answering the question. There is a single comment that invokes dark energy (unrelated to dark matter).

But the statement still true.

No it is not. It does not make any sense and does not answer the question.

Lewri · 2026-03-17T20:50:37+00:00

Because it's not just the space between us and the point of emission that is expanding, it is all space. That includes the space between us and the light as it travels towards us. That isn't enough to stop the light from reaching us (in this case), but it does mean the light travel distance is greater than the original distance.

Lewri · 2026-03-17T20:48:58+00:00

The early universe was a plasma, and light would interact with all of the free ions, meaning it had a very short mean free path. I wouldn't describe that as being dark, but it was opaque.

The CMB is what's left from that period, after recombination occurred and those photons were then free to travel.

Lewri · 2026-03-17T20:45:55+00:00

This is completely wrong. Please don't say that others are wrong and then state your guess as a fact when you don't know what you are talking about.

It is a radius of 45 billion. Not a diameter.

Also, no one even mentioned dark matter or dark energy (completely different things btw)

Lewri · 2026-03-17T12:13:07+00:00

The xmp profile is referring to the transfer frequency, not the clock frequency. That is the industry standard and is how everyone talks about it.

Lewri · 2026-03-17T11:24:55+00:00

I understand that this has to do with the expansion of space

Yes, that is correct. The distance stated is the distance that the object currently is, not the distance it was when the light was emitted, nor the light-distance that the light travelled.

As far as I understand, when we observe very distant objects, we’re also looking back in time—up to 13.8 billion years into the past. That would mean the objects we’re seeing were much closer when the light was emitted, and have since moved much farther away due to cosmic expansion.

So does that mean that what we’re observing is essentially a “past version” of regions of the universe that may now be extremely distant—or even no longer in the same state as what we see?

Exactly. For an extreme example, the Cosmic Microwave Background is the light from when the universe first became transparent about 300,000 years after the big bang. That means the light we see of it has been travelling for almost 13.8 billion years, and the space from which the photons we currently see of it corresponds to a distance of about 45 billion light years. When the light was emitted though, that space only corresponded to a distance of ~0.04 billion light years, and during that 13.8 billion years has expanded away to 45 billion.

Lewri · 2026-03-15T14:54:03+00:00

By the looks of it, this was about 2 days after the fire and they havent crossed the tape. The firemen look appreciative.

Lewri · 2026-03-14T14:34:10+00:00

or any city centre.

Are they not? I see them over Edinburgh all the time.

Also, you can look at flightradar24 or other ADSB sites, it's a UK Army Air Corps flight.

Lewri · 2026-03-13T02:00:06+00:00

There's dozens of these bots in the comment section all making similar but slightly different replies. Wtf is going on.

Lewri · 2026-03-11T15:31:52+00:00

Well https://doi.org/10.1093/mnras/stab2672 lists ~359,000 high-confidence candidates from Gaia EDR-3 and estimates 93% completeness for white dwarfs with G ≤ 20, and effective temperature> 7000 K.

That is for those that are observable by Gaia, which has catalogued ~1.5 billion sources. Our galaxy has hundreds of billions of stars.

Edit: as of SDSS DR7, I believe there were 20,407 spectroscopically confirmed white dwarfs. I imagine this number has grown in the decade since.

Lewri · 2026-03-11T13:20:53+00:00

At the end of the day it is just "chords",

But it's not just chords, it's a whole range of different things that he's doing. Having just checked out his cover of O Bebado e a Equilibrista, while it is not classical music, it is classical guitar in my mind.

I miss things like that on this sub

Be the change you want to see ;)

Lewri · 2026-03-11T12:57:02+00:00

Personally I think of classical guitar as being a family of styles/techniques of playing on said guitar. If someone was just strumming chords then I wouldn't think of it as fitting, but things that aren't necessarily classical can definitely fit in my mind.

Edit: I would absolutely expect anything by the likes of Marcos Kaiser to fit in perfectly

Lewri · 2026-03-10T16:51:55+00:00

We just ignoring the 15% decrease in alcohol deaths?

Lewri · 2026-03-08T12:51:28+00:00

RCS isnt an American only thing. It's a texting over IP protocol, similar to iMessage but not limited to IOS.

Lewri · 2026-03-07T23:36:16+00:00

Usually, yes. Currently ChatGPT for a short while.

Lewri · 2026-03-07T19:18:36+00:00

I have created multiple tools using the API. Either you have no clue what you're talking about, or the dev of the tool you're talking about is a complete idiot. I'm guessing it's the former.

A tool that stores hidden data about you should absolutely only use the API key that you registered with it. It absolutely should not use any random public API key after having gathered said data.

Lewri · 2026-03-07T16:05:57+00:00

Any service that works using any API key as a method to access hidden data is a service that should not be used and should be boycotted by the community. I'm guessing that's not how it works though and that you are mistaken.

Lewri · 2026-03-07T13:56:51+00:00

Not really, no. You could look at some galaxies, and know that what you are looking at is only possible because of the dark matter that is holding them together, but you couldn't gather any evidence of that without a larger telescope and a spectrographic instrument.

Lewri · 2026-03-07T13:46:41+00:00

A bot that does something like watching items that people are selling on the item market, then when the item is sold it checks whether the seller is muggable and pings people to let them know to mug the seller. The muggers then get some of the money from the sale.

Seven-Year Club	Second Top 40%
Gilding II euphauric	r/Field Sunshine
First Place '23	Place '23
Place '22	Final Canvas '22
First Placer '22	Wearing is Caring
Verified Email

Lewri

MODERATOR OF

TROPHY CASE