The discussion centers on the concept that falling into a black hole (bh) allows for the perception of traveling through infinite space in finite time, with implications for time dilation. Participants seek clarification on the validity of this claim and request references or quotes from relevant literature. The idea suggests that a clock falling into a black hole experiences time differently, potentially appearing to travel at the speed of light (c). The conversation highlights the complexities of general relativity and the behavior of time under extreme gravitational conditions. Understanding these phenomena requires a deep dive into theoretical physics and astrophysics.
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Ignition
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I have read in a book that fall in a bh is the sameto go at c.
Is it true?
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
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...
This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed).
n.b. I start this...