Inflation theory suggests a rapid expansion of the universe shortly after the Big Bang, distinct from the ongoing expansion observed today as galaxies move away from each other. This theory allows for the possibility of other bubble universes, which could have been formed during this initial inflationary period. The uneven nature of this expansion might result in some regions of the universe being permanently separated from our observable bubble. While the concept remains speculative, it aligns with various astronomical observations. Overall, inflation theory opens up intriguing possibilities regarding the existence of multiple universes.
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clm321
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does the inflation theory say that there could be infanet other bubble iniverses or that our bubble universe is expanding as the galexys move outwards?
I think you might have confused 'inflation' with 'expanding'.
The universe is expanding and other galaxies are indeed moving away from us but 'inflation' refers specifically to a very short period near the start of the universe when this expansion was very quick. It is still speculation but fits other observations very well.
If this quick expansion was uneven then one piece of the universe might have been shifted away from our bit of universe never to come back into contact...
Is a homemade radio telescope realistic?
There seems to be a confluence of multiple technologies that makes the situation better than when I was a wee lad: software-defined radio (SDR), the easy availability of satellite dishes, surveillance drives, and fast CPUs.
Let's take a step back - it is trivial to see the sun in radio. An old analog TV, a set of "rabbit ears" antenna, and you're good to go. Point the antenna at the sun (i.e. the ears are perpendicular to it) and there is...
Partial solar eclipse from Twizel, South Isl., New Zealand ...
almost missed it due to cloud, didnt see max at 0710 NZST as it went back into cloud.
20250922, 0701NZST
Canon 6D II 70-200mm @200mm,
F4, 100th sec, 1600ISO
Makeshift solar filter made out of solar eclipse sunglasses
are in a beautiful arrangement tonight as I have just observed on the walk back from the pub.
Does anyone have access to an image without city light pollution and better exposure control than my phone?
Edit: snapshot attached