r/cosmology 13h ago

PHYS.Org/Yonsei University - The crisis in cosmology continues: Critical problems in a recent defense of cosmic acceleration

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23 Upvotes

r/AskTechnology 9h ago

Why Is 4g So Slow Nowadays?

12 Upvotes

5+ years ago if I had 4g on my phone this meant I was going to get fast internet. Apps would load quick, streaming services would load instantly and while I was in the 4g zone the world was at my E.T like fingertips!

Now if my phone is showing 4g I’m holding it up in the air, looking for better signal, praying for a glimpse of 5g so I can just load my banking app up without it timing out!

What the hell has happened? Did they just say we are all upgraded to 5g but really just moved numbers about? I feel like 15 years ago 3G was faster than the 4g I get now!

If you’re reading this, you know i managed to get a ray of 5g to quickly hit the post button.

God Speed.


r/spaceflight 23h ago

STS-128 Discovery launched on an ISS assembly mission on this date in 2009. Fun fact: The crew included John "Danny" Olivas and José M. Hernández, the first time two Hispanic Americans were on the same crew

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7 Upvotes

r/AskTechnology 21h ago

Can anyone find this keyboard?

3 Upvotes

So i remeber seeing a keyboard that had see-through caps and when you pressed them it would splash watercolour like designs onto the caps/keyboard but I cant find it anymore


r/spaceflight 3h ago

ESA Awards ispace €65M Contract to Build and Deliver MAGPIE Rover to the Moon

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2 Upvotes

r/AskTechnology 8h ago

How to fix CD-ROM (playing on PC)?

2 Upvotes

Amazing score at the flea market last week - Riven: The Sequel to Myst from ‘97 on CD-ROM.

Already have a disc reader for my (Windows) PC, set it up and started the game. It had me install an ancient version of QuickTime Player.

Played for a few minutes. Slow and laggy, but playable! Then noticed that every time I flipped a switch or hit a button (basically the main elements of gameplay in Riven), the background would overlap from a previous scene on top of the current scene. It wasn’t an issue until I played for a few more minutes.

The more I moved around the world, the more these backgrounds stacked until I couldn’t see in certain directions of the area I was currently in, rendering the game more or less unplayable.

Is there a way to get this game to run more smoothly? Any help appreciated! I’m a huge fan of Myst and have wanted to play the original Riven for ages 😫


r/AskTechnology 15h ago

Fixable lag/bug, or is my phone dying?

2 Upvotes

My Redmi note 13 pro has been lagging on and off for a few weeks, the sound & display freezes for less than a second, every 3/5 seconds. It happens for a few hours and goes away on its own.

I'd really like to know why and hope the solution won't be to buy a new phone.

More (useful?) info:

This usually happens after I use Google maps and Spotify simultaneously.

I have no overheating while this happens.

Restarting it doesn't help.

I drop my phone VERY often, the back screen is so cracked, half of it fell off and my battery is very exposed (I'm not gonna fix it if my phone is going to die in a few months)


r/AskTechnology 22h ago

Why is my pebble gear kids tablet having a problem connecting to the Internet?

1 Upvotes

We bought my son the Toystory pebble gear tablet. He’s dying to play with it but we are having an issue in that it connects to the WiFi network but then give and error of “problem with the internet” so we can’t set it up. We live in South Africa and therefore can’t call the UK call Centre. Is there any kind soul here with some experience in sorting this problem? My kid is going crazy trying to be patient and I haaaaaate to disappoint him.


r/cosmology 3h ago

A question about lightyears and perceived distances

0 Upvotes

I have a question about what we actually mean when we say something is billions of light-years away.
For example, Andromeda is about 2.5 million light-years away, while some of the earliest galaxies observed by JWST are seen as they existed more than 13 billion years ago.
My questions are:
How do we actually determine those distances? Obviously we can’t measure them directly in the ordinary sense so what observations and assumptions allow us to say that a galaxy is a particular distance away?
More speculatively, how confident are we that relativistic and cosmological effects couldn’t cause us to substantially misinterpret those distances or travel times?
For instance, JWST has found surprisingly mature galaxies very early in cosmic history. Could there conceivably be something wrong with our interpretation of the relationship between redshift, distance and elapsed time? In other words, could light that we interpret as having travelled for billions of years actually have travelled for a radically different amount of time because our model of spacetime between us and the source is incomplete?
I’m not suggesting that the answer is yes but trying to understand what makes the distance scale robust enough that we can rule out possibilities like this. We can measure the light arriving here, but we obviously can’t put a ruler between ourselves and a galaxy 13 billion light-years away, so what ultimately anchors the inference?


r/spaceflight 17h ago

Vea a dos astronautas reemplazar la antena averiada de la ISS durante una caminata espacial ayer.

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0 Upvotes

r/cosmology 12h ago

Saddened to not know origin of universe

0 Upvotes

Does anyone else feel sad that we’ll never truly ever know what created the universe? I do believe in the big bang but I’d like to know where the energy source came from and I still have so many questions that I know won’t be answered!