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swampwiz
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I If GRB-221009A had been in Milky Way, would we have been fried?
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- #2
DaveC426913
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No. It occurred 1.9 billion years ago! 
We would all be in the ocean depths for another 1.5 billion years. Also, "we" are all just cyanocbacteria.
BTW, "A mass extinction occurred around 2 billion years ago, wiping out up to 99.5% of life on Earth..."
We would all be in the ocean depths for another 1.5 billion years. Also, "we" are all just cyanocbacteria.BTW, "A mass extinction occurred around 2 billion years ago, wiping out up to 99.5% of life on Earth..."
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
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