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<SporkWitch>
XXCoder: false! many things are made to explode. Heck, this entire game is centred around exploding things, just controlling HOW they explode :P
<XXCoder>
lol
<SporkWitch>
see also: the internal combustion engine. LITERALLY controlled, timed explosions, harnessed to repurpose the energy!
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<UmbralRaptor>
No, not explosions!
<UmbralRaptor>
Explosions in your internal combustion engine damage it and reduce its performance!
<UmbralRaptor>
</pedant>
<SporkWitch>
that's a whole other level of pedantry, because they very much are controlled explosions. it's not a continuous burn, it's a timed, short-lived burn, more typically known as an explosion or detonation heh
<SporkWitch>
in the case of diesel, it's even more appropriate, as if i recall correctly, diesel actually uses the pressure itself to cauxse the combustion, once it gets going
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<Mat2ch>
SpaceX knows how to get their astronauts wings...
<SporkWitch>
redbull?
<Mat2ch>
No, giving them scientific tasks to perform in orbit!
<SporkWitch>
my way has to work too; a commercial advertisement would never lie! :P
<Althego>
hah spacewalk
<Althego>
but with iva suit?
<Althego>
high altitude with humans....
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<Althego>
starlink alser comm
<Althego>
now that is intersting
<Althego>
there are news of laser comm experiments
<Althego>
but never for actual usage
<Althego>
maybe spacex can speed this up too
<Mat2ch>
Althego: with an EVA suit
<Mat2ch>
which they seem to develop from the IVA suit.
<Althego>
but spacex doesnt have an eva suit. and the image shows the iva suit too
<Mat2ch>
Possibly 2-in-1-suit then
<Althego>
interesting
<Althego>
and you think they can develop a suit in less time that is the delay of nasa's new suits?
<Mat2ch>
they are showing a tether, probably with oxygen supply from it. So you need to make the IVA suit only vacuum proof. Heat management is already built in iirc
<Althego>
i think the iva cable connects not only oxygen, but comm and cooling too
<Mat2ch>
jup
<Mat2ch>
not an independent suit to walk around on other objects yet
<Althego>
so actually in this case peole wouldnt be tourists
<Althego>
this is a job
<Althego>
and not without danger
<Mat2ch>
tbh going into orbit is full of danger
<Althego>
that is true
<Mat2ch>
even though SpaceX has shown that they can handle it
<Althego>
but staying in high orbit, and also doing a depressurization of the spacecraft adds to that
<Althego>
a full suit would still need a portable life support
<Mat2ch>
The depressurization will be the most interesting part. Probably done in a way they can deorbit in a short time, if something goes wrong
<Althego>
probably not that interesting. the lem could do it many times
<Althego>
it is losing only a few cubic meters of air
<Althego>
if they let it out
<Althego>
but i can even imagine they just store it
<Mat2ch>
And about NASA vs SpaceX. The NASA engineers tried to make a suit that matches 100 % of their requirements. The SpaceX suit matches only 95 % (you can't easily grab stuff from the ground with it).
<Althego>
but as spacex does, they would improve it over time
<UmbralRaptor>
And there are only 768 teaspoons in a gallon
<UmbralRaptor>
contrast with 1000 ml in a liter
<Althego>
harsh
<UmbralRaptor>
3 tsp in a tbsp, ??? tbsp in an ounce, uh, 8 ounces in a cup, 2 cups in a pint, 2 pints in a quart, 4 quarts in a gallon
<UmbralRaptor>
hrm, I might be misremembering some of them
<Althego>
the last is at least logical
<UmbralRaptor>
ah, 2 tablespoons in a fluid ounce
<UmbralRaptor>
Also, the ounces are a trap, a pint of water (16 fl oz) weighs closer to 17 ounces
* UmbralRaptor
hochos these units
<UmbralRaptor>
All of the above is US, UK volumetric units are different in a few places
<UmbralRaptor>
. o O (catnip flavored cookies)
<Althego>
who would eat that?
<SporkWitch>
furries
<UmbralRaptor>
I mean, there is catnip tea
<SporkWitch>
some nutjob actually tried making the school install litter boxes for furries/otherkin; thankfully, in a rare fit of sanity, the school said no.
* UmbralRaptor
isn't clear that the event ever actually happened
<Althego>
i thought that was hoax
<SporkWitch>
UmbralRaptop: the only portion that was false was the claim (mostly from left wing outlets CLAIMING others are claiming) the school actually did it. That it was requested and the school said no is confirmed.
<Mat2ch>
Ah, there is the destacking of S20
<Althego>
pop eax
<SporkWitch>
UmbralRaptop: part of the problem is that it could well be a Babylon Bee headline, as it's totally absurd, yet the totally absurd keeps happening ("babylon bee prophecies" is its own meme, as the absurd satire they write keeps coming true mere days, weeks, or months later)
<Althego>
may be new to you but i have been living in that kind f reality for 12 years
<sandbox>
did Harvey get the cups? :p
<sandbox>
seeing if anyone got the reference
<sandbox>
10 year old video... I hope Harvey is still around
<umaxtu>
I'm assuming you aren't talking about Harvey the used car salesman that sold my parents a minivan. He isn't around
<sandbox>
it's a cat
<umaxtu>
oh
<Althego>
the internet is getting old. keyboard cat died long ago. even grumpy cat died years ago
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<trace>
Does our sun revolve around the black hole in the center of our milky way?
<darsie>
kinda
<Althego>
you mean orbits
<trace>
yes
<darsie>
It revolves around the center of mass of the galaxy, which I guess is within the SMBH.
<darsie>
orbits, yes.
<darsie>
It also orbits everything within its orbit, which makes it orbit faster.
<trace>
what is different about solar systems outside of galaxies
<trace>
do they have different elements?
<trace>
because they would need elements from dead stars
<darsie>
I guess the metallicity is higher in galaxies.
<Althego>
stars dont really need other elements than hydrogen
<darsie>
Humans do
<darsie>
rocks do
<Althego>
yes, solid planets and life, etc, does
<darsie>
Life as we know it.
<Althego>
jim
<darsie>
:)
<trace>
why metallicity
<darsie>
Astronomers say ever element >He is a metal.
<Althego>
astronomers call everything not hydrogen an helium metals
<trace>
metallicity comes from stars got nova?
<UmbralRaptor>
hydrogen: chemical symbol X
<UmbralRaptor>
helium: chemical symbol Y
<UmbralRaptor>
metal: chemical symbol Z
<UmbralRaptor>
trace: useful approximation, but also a fair number of elements are from red giant stars
<trace>
which come from star giants
<UmbralRaptor>
typically carbon, nitrogen, and oxygen, but also when we get into trace element land a lot of S-process ones
<trace>
which elements get objects in galaxies and which planets of solar systems outside galaxies
<darsie>
All elements >Fe are from supernovae
<Althego>
but wasnt there something about gold from neutron star mergers?
<UmbralRaptor>
darsie: It's complicated(tm)
<darsie>
maybe
<Althego>
hehe
<UmbralRaptor>
Althego: yeah, some elements are so you get arguments about there being multiple r-processes IIRC
* UmbralRaptor
also ignores the rp-processes because I know even less about that
<Althego>
hehe
<Althego>
you sure know more about it than us
<trace>
but there are elements feasable from giant stars
<darsie>
I'm not sure what the top elements from red giants are.
<trace>
so our sun does not become a nova - what does it become
<darsie>
red giant
<darsie>
also nova <> supernova
<Althego>
i think there is some difference between nova and supernova
<Althego>
heh eyou are faster again
<trace>
what is the difference between nova and super nova
<darsie>
I think a nova is when a white dwarf accretes matter from a companion star till there's enough to start fusion on the surface.
<UmbralRaptor>
Our sun -> red giant -> planetary nebula + white dwarf
<Althego>
there are also several types of supernovas, one being the famous Ia that can be used as a standard canfle
<UmbralRaptor>
darsie: yeah, something something classical nova. IIRC it's a process that can repeat a bunch of times
<trace>
what is planetary nebula
<darsie>
Supernova is gravitational collapse which starts fusion in the core which sends a wave of fusion throughout the star, causing a huge explosion.
<Althego>
UmbralRaptor: you have to get you best ndg impressions for these :)
<UmbralRaptor>
A nebula that early telescope astronomers (eg: Pierre Mechain, Charles Messier) noted looked sort of like planets though clearly couldn't be
<UmbralRaptor>
They're the outer layers of sun-like stars that have since puffed off at the end of the red giant phase
<UmbralRaptor>
They're lit up mostly by being hot/excited gases in part from UV emission from the white dwarf, and will expand and dispere over the next ~1e5 years IIRC
<trace>
I still do not understand what is different about planets of stars outside a galaxy to the ones inside galaxies
<darsie>
Planets outside galaxies are probably mostly gas.
<darsie>
Due to less heavy elements.
<UmbralRaptor>
Typical examples would be eg: Ring Nebula, Cat's Eye Nebula, Helix Nebula, and Dumbell Nebula
<UmbralRaptor>
darsie: weirdly enough, we still find lots of seemingly rocky planets around metal-poor stars
<darsie>
ok
<UmbralRaptor>
Gas giants if anything are more common around metal-rich ones
<Althego>
there are some rogue planets, maybe they catch those?
<darsie>
How disruptive is ejection of stars from a galaxy for their planets?
<darsie>
Galaxy collisions/mergers probably eject a lot of stellar systems.
<UmbralRaptor>
Insufficient data to answer directly at this time, my understanding is not particularly if some star in the disk gets thrown out as part of a galaxy merger
<UmbralRaptor>
The processes that cause runaway stars would be disruptive, but those stars are unlikely to have planets anyway
<trace>
how does metal get outside galaxies
<UmbralRaptor>
I'm unclear on to what extent we have measurements of extragalactic gas clouds, outside of some highish redshift stuff
<SporkWitch>
v-ger will tell us in a few centuries :P
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<transhohmann>
in theory, a planet could get ejected from orbit
<transhohmann>
which makes me wonder
<darsie>
They are on fixed orbits in stock KSP.
<transhohmann>
yes, i know
<darsie>
IIRC they would get messed up relatively quickly in n-body physics.
<transhohmann>
I was just thinking, could a planet be either knocked a bit off by some massive event or just be in an orbit that will only last for a relatively short amount of time, swing out of the system and later be caught by either a different planet or star?
<transhohmann>
far-fetched, but an interesting thought...if you didn't know this event had happened you would assume some very strange things about the planet and the star it was around if you were just discovering it
<UmbralRaptor>
Yes, though in general ejection is far more likely than capture
<UmbralRaptor>
(Easiest capture I think involves some weirdness with stellar close encounters)
<darsie>
Most planets will eventually get ejected from their stars, and most stars will get ejected from their galaxy.
<darsie>
The end result is that most objects (90% to 99%) are ejected from the galaxy, leaving a small fraction (maybe 1% to 10%) which fall into the central supermassive black hole.[5][14]
* UmbralRaptor
is admittedly usually not considering times that long
<darsie>
I made plans for that time.
<darsie>
I thought of leaving Milkomeda with a stabilized system of black dwarfs and eat them with a black hole, living off the Hawking radiation.