Helio's latest activity
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Helio replied to the thread Question Not when or where or how but why did the Big Bang happen..“Why?” is the main question asked in philosophy and religion. Science asks “how” questions. In earlier centuries science sought... -
Helio reacted to Meteoric Marmot's post in the thread Pollution from rocket launches and burning satellites could cause the next environmental emergency with
Like.
Alumina is Al2O3 and its optical properties depend on which crystal structure it forms. One crystal structure is clear and forms... -
Helio replied to the thread Pollution from rocket launches and burning satellites could cause the next environmental emergency.Agreed. Isn’t aluminum oxide white, thus offering some greater reflection?
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Helio replied to the thread Hopes dim for another bright October comet after Tsuchinshan-ATLAS.Tonight's image with iPhone. I give my visual of it only a 60% chance that I saw it.
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Helio reacted to billslugg's post in the thread Hopes dim for another bright October comet after Tsuchinshan-ATLAS with Like.
Yes, skyglow is narrow, could easily be filtered out. Arequipa had 500,000 people but all streetlights were sodium vapor. Mercury...
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Helio reacted to billslugg's post in the thread Hopes dim for another bright October comet after Tsuchinshan-ATLAS with Like.
Very nice image. You have some real clear skies. In 1986, I was excited to be at 10,000 feet in the Andes because I figured the skies...
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Helio replied to the thread Hopes dim for another bright October comet after Tsuchinshan-ATLAS.Thanks. I just notice that Venus is barely on the left edge (about 1/2 way up). Perhaps this will help others for tonight's viewing...
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Helio replied to the thread Hopes dim for another bright October comet after Tsuchinshan-ATLAS.Here's one with my iPhone. I first found the comet using the iPhone, which sees such things better than the eye, of course.
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Helio replied to the thread Hopes dim for another bright October comet after Tsuchinshan-ATLAS.Ug. Cosmic particles producing sky glow?
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Helio replied to the thread Hopes dim for another bright October comet after Tsuchinshan-ATLAS.Massive binocs! For Halley’s, we travelled 2 hours to a ranch. I was using Saturn to set the focus on the 8” SCT when it quickly began...
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Helio replied to the thread Hopes dim for another bright October comet after Tsuchinshan-ATLAS.We could just barely see it at sunset. The camera, of course, did better.
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Helio reacted to Unclear Engineer's post in the thread We have the satellite data to show climate change is real. Now what? with Like.
The actual system of chemicals transported around the planet, into and out of the ground by subduction, volcanism, etc, is quite...
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Helio replied to the thread We have the satellite data to show climate change is real. Now what?.Yes. Thanks. That graph illustrates the possible difference between association and causation. Although higher temperatures are...
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Helio reacted to Unclear Engineer's post in the thread We have the satellite data to show climate change is real. Now what? with Like.
Helio, What I am saying about CO2 having a causal effect on warming is based on looking at the CO2 concentrations for hundreds of...
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Helio reacted to Unclear Engineer's post in the thread We have the satellite data to show climate change is real. Now what? with Like.
Yes, atmospheric concentration of CO2 seems to lag a bit, compared to temperature. Many things have been shown to release more CO2...
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