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Helio
replied to the thread
Books of interest
.
Intersting novel. SPOILER Alert... In Sphereland (1957), per Wiki, a surveyor measures a triangle whose angles exceed a total of 180...
Sep 3, 2024
Helio
reacted to
Catastrophe's post
in the thread
Books of interest
with
Like
.
There is "a continuing speculation on an expanding universe" (as a follow up to Flatland) entitled Sphereland by Dionys Burger. Although...
Sep 3, 2024
Helio
replied to the thread
More on the Big Bang - what was before t = 0?
.
Y'all might enjoy this from Dan Hooper's (CERN) book ... "...I am talking about a machine [collider] that collides 700 million protons...
Sep 3, 2024
Helio
replied to the thread
More on the Big Bang - what was before t = 0?
.
FWIW, I'm fine with or without quotes. It is both clear and simple what is meant either way. It is often used to help delineate...
Sep 3, 2024
Helio
replied to the thread
Roads on Mars?
.
Yes and it has a name... pareidolia. The "face of Mars" is a great example.
Aug 31, 2024
Helio
replied to the thread
Where is the center of the universe?
.
That's actually my question. I haven't seen where the tension is explained with acceleration, but I only ask at times when I see an...
Aug 31, 2024
Helio
replied to the thread
Where is the center of the universe?
.
There could be a paper using accurate expansion rates as a function of spherical angle, but there is a chance there are none, as well...
Aug 30, 2024
Helio
replied to the thread
Where is the center of the universe?
.
Google the CMB dipole and you'll have hundreds of articles on this. The motions of the Earth/Sun/galaxy/local cluster became somewhat...
Aug 30, 2024
Helio
reacted to
Admin's post
in the thread
The Local Bubble: How our solar system got caught up in a cosmic crime scene
with
Like
.
The Local Bubble is a region of surprisingly low-density gas that surrounds our solar system and other nearby regions of our galaxy —...
Aug 27, 2024
Helio
reacted to
billslugg's post
in the thread
Saturn threw a comet out of the solar system at 6,700 mph. Here's how
with
Like
.
I suppose sky brightness would affect certain type of observations. I see it must be entered into the calculator when determining...
Aug 25, 2024
Helio
replied to the thread
Saturn threw a comet out of the solar system at 6,700 mph. Here's how
.
That's interesting. Is this ever an issue for the monster scopes in Chilie?
Aug 24, 2024
Helio
replied to the thread
Saturn threw a comet out of the solar system at 6,700 mph. Here's how
.
I too was surprised when learning they close mountain observatory domes when particle counts are too high. High counts also brighten...
Aug 24, 2024
Helio
reacted to
billslugg's post
in the thread
Saturn threw a comet out of the solar system at 6,700 mph. Here's how
with
Like
.
It would take a very large telescope for a human to see something as dim as magnitude 17.8. The mirror diameter would have to be...
Aug 24, 2024
Helio
replied to the thread
Saturn threw a comet out of the solar system at 6,700 mph. Here's how
.
Yes. I calculate a minimum of 1.5 meters if the pupil size is 6 mm. But the night sky brightness will be an issue as well. See...
Aug 24, 2024
Helio
reacted to
promytius's post
in the thread
A possible insight into the Big Bang
with
Like
.
With all due respect, your word choices are beyond me, and I'm not going to be interested any more by responses such as yours. I can see...
Aug 22, 2024
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