I’ve got a few years of waiting on you, but never made an eclipse a priority to see. This one was close enough where I had no excuses. And I had the day off with the kids. We drove many hours to get to Plattsburgh, NY in the hopes that the event wouldn’t be obscured by clouds, we had a choice between that and Ohio. Looks like Ohio did pretty well, we had a high cirrus cloud layer but it wasn’t enough to disrupt the view. I wouldn’t call myself an astronomy buff, but Space has always held huge interest in my life, so dragging the family out for this event was kinda a big ask because they weren’t necessarily into it. I hoped the trip would be worth it, both weather-wise and stellar phenomena-wise.
Worth it. There’s no words to describe the ethereal, silvery ring that magically appears during totality. Bailey’s beads and more. Sure, there are photos and videos, but that doesn’t do justice to the play of light in the environment surrounding the viewer, the night-yet-still-day incongruity.
Everyone is taking home some joy from the experience.
We tried to capture a photo of total, but due to a comedy of errors, it didn’t happen, so the memories will just have to stay in our heads.
I hope anyone near an eclipse’s path of totality won’t write it off if they have a choice. Go see it. Truly a sight.
This is the kind of thing where even if kids don’t seem to really be interested in it, even if they don’t seem impressed, it’s such an incredibly rare and unique event (close enough to home) that they will always remember it. Maybe not to the point of thinking about it every week, but in the sense that every mention of solar eclipses, at the very least, will remind them of this one moment in totality with you. You can plant some seeds for interests without knowing what will take root while still knowing the seed stays there.
They did said “80 years or so” and “around 80 years”, maybe they did their calculation and predicted that this year is likely the time that it happen. They did give a huge margin of when it will happen though.
In March or April 2023, it dimmed to magnitude 12.3. A similar dimming occurred in the year before the 1946 outburst, indicating that it will likely erupt between April and September 2024.
I assume we can’t actually resolve spatial detail on the planet, so the effect must have been temporal. Would it have been something like a spike moving through the visible spectrum as the planet transits its star?
Yeah not in a way detectable to radio telescopes though. If an atmosphere is stoichemetrically ‘far’ from equilibrium, this implies a biogeochemcical process that is pushing it out of equilibrium.
Oxygen very quickly gets reduced out of the atmosphere. Thats the whole point of it as a bioindicator molecule. There aren’t many other species of molecule that are such a clear indicator of the presence of redox reactions. Preter oxidative respiration, If nitrogen was the electron receptor, but its species like ammonia might be visible via radio telescope. Google great oxygen holocaust. We know photosynthesis was happening before then, but oxygen wasn’t the terminal electron receptor.
Oxygen would be a smoking gun, because you don’t keep oxygen in an atmosphere if something isn’t replenishing it.
I also got about 1/2 way through typing almost the same response below about gases that naturally degrade quickly, not being able to accumulate to high enough concentrations to be detectable at these distances but @TropicalDingDing did so more eloquently than their name would indicate possible, so I’ll let you read theirs here: lemmy.world/comment/8258449
It’s a good biosignature but a real smoking gun would be if a planet has intelligent life that’s not always so intelligent. Then, we might detect chlorofluorocarbons or some other synthetic pollutant.
“Well, we detected an alien civilization but their atmosphere is in way worse shape than 1950’s London and they’re 100 light years away. I guess we’ll keep checking and see if they get their act together or not.”
The time thing is interesting, but I feel like no one talks much about the appearance of passing objects. That is, I wonder how the image of a passing celestial object might distort due to length contraction and any other effects. I’m still trying to understand that. This article seems pretty digestible, so far.
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