Recent content by Astronuc

https://www.cbc.ca/player/play/video/9.7107713 The 'Explorer Plate' is east of an active ocean ridge, which is pushing out 'new' ocean crust of the north coast of Vancouver Island, BC, Canada. Earth’s Crust Is Tearing Apart off the Pacific Northwest—and That’s Not Necessarily Bad News...

University of Chicago scientists continue to investigate. https://news.uchicago.edu/explainer/origin-life-earth-explained (last reviewed 2025) Georgia Tech has a program too. https://astrobiology.nasa.gov/news/new-study-identifies-possible-ancestors-of-rna/ (2018) Carbon, hydrogen, oxygen...

A couple of points: 1. 224Ra->220Rn is found in the decay chain of 232Th rather than in the decay chains of 235U or 238U, although 232Th is a decay product of 236U, which does form when 235U undergoes radiative (n,γ) capture rather than fissioning...

In Ohio, Indiana, Kentucky, West Virginia? Perhaps somewhere in the Ohio River Valley? So, Iron or Iron-nickel?

I saw some dashcam video this morning. Pretty cool! Apparently NASA reported a 7 ton meteor. From the AP cited by Andy Resnick in the OP: I like the comment: "A 7-ton meteor that sped across the Cleveland sky at 45,000 miles (72,420 kilometers) per hour . . . ."

Adding to what others mentioned, Cl is an anion, so one has a cation (Au) surrounded by 3 or 4 Cl atoms. H⋅Au(III)Cl4, has 4 Cl anions surrounding an Au cation. Any one of the 4 Cl atoms can lose an electron such that the complex becomes negative. Something I just learned: "Au(III)Cl4 is used...

Oops! From FORTUNE: ‘Proceed with caution’: Elon Musk offers warning after Amazon reportedly had mandatory meeting to address ‘high blast radius’ and AI-related incidents https://tech.yahoo.com/ai/articles/proceed-caution-elon-musk-offers-194901281.html I think ‘high blast radius’ refers to...

I read about the behavior of 3He, probably around 1975, just one of the many interesting topics that inspired me to study physics and science, in general. I recall that liquid 3He would flow out of a test tube, IIRC, if it was held above a pool of liquid 3He, and it would flow in if the bottom...

Did it ever stop? I think there has been ongoing eruptions since. https://www.usgs.gov/volcanoes/kilauea/summit-webcams

My wife just happened to be listening to a video on Science Channel. It caught my attention, partly due to the mention of killer stars, or death stars, and mostly because if mentioned ASASSN-15lh (which sounded like assassin). I then searched for references, and also search PF for any...

My wife was listening to a video about superluminal supernova (Type Ic), ASASSN-15lh, or SN 2015L. It was discovered through the All Sky Automated Survey for SuperNovae (ASAS-SN). The event occurred in a galaxy ~3.82 billion ly from earth. Peak Apparent Magnitude was 16.9. The mass of...

Apparently, the iceberg A23 has been disintegrating. Once the biggest in the world, it now apparently has weeks left somewhere in the south Atlantic NNW of South Georgia Island. https://www.bbc.com/news/resources/idt-20f878f1-f4af-4022-9f62-b0515b9f4b20

I am aware this thread is about 2.5 years old (OP Aug 9, 2023 with last response Sep 28, 2023), but it is a somewhat important topic. Context of the statements by NRC and HPS is important to understand. In the normal course of every day life, one would not expect aluminum foil in contact with...

I wonder if I changed thought in mid-sentence. As far as I know my abdominal cavity is normal. My b I have dextrocardia, in which my heart is oriented to the right, and actually is more vertical. That has caused confusion for some radiologists and doctors. It affected my lungs as well, when...

Good questions. The second quote in my post mentions less success with "impending respiratory failure" without elaborating on the symptoms, but a high success rate for "stroke" cases with "unmistakable" symptoms. So, perhaps it is a matter of training, or 'understanding' (diagnosing) ambiguous...