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Small Asteroid Impacts Moon
- elihu 4y agoI wonder how big it was. Seems like it would have to be pretty big to be that bright, but maybe it's one of those things that defy our regular intuition.
- actually_a_dog 4y agoI don't know, but compared to the scale of the gigantic crater that's visible in the image, whatever it was was pretty much nothing in the grand scheme.
- AnimalMuppet 4y agoThe impact that made that huge crater must have been an amazing light show...
- elihu 4y agoI've never thought of this before, but I imagine the ground could have glowed for minutes or hours, and been visible from Earth. That would have been quite something to see from a safe distance.
- actually_a_dog 4y agoI bet it did. The dinosaurs were probably impressed.
- _joel 4y agoDoesn't have to be that big really.
- Timwi 4y agoThe brightness is a function of momentum, meaning, it could be large or it could just be unfathomably fast.
- csomar 4y agoRather than size, I wonder how much energy the impact released. Waiting for the videos that will do a simulation of what would have happened if this have hit earth.
- perihelions 4y agoAI translation: - "I was able to catch the biggest lunar impact flash in my observation history! This is a picture of the lunar impact flash that appeared at 20:14:30.8 on February 23, 2023, taken from my home in Hiratsuka (replayed at actual speed). It was a huge flash that continued to shine for more than 1 second. Since the moon has no atmosphere, meteors and fireballs cannot be seen, and the moment a crater is formed, it glows." - "This is a picture of the lunar impact flash at 20:14:30.8 on February 23, 2023, captured by another telescope (playback at actual speed). At that time, the altitude of the moon was only 7 degrees, and I was glad that I could stick to the limit. At the time of observation, there was no satellite passing over the lunar surface, and from the way it shines, it is highly likely that it is a lunar impact flash." - "This is a still image of the lunar impact flash at 20:14:30.8 on February 23, 2023. It seems to have fallen near Ideler L crater, slightly northwest of Pitiscus crater. Because it is so bright, the generated crater is large, and the striations are clearly visible. It seems that the telephoto camera of NASA's lunar probe LRO can detect the fall trace."
- pfortuny 4y agoBottom right corner (took me a while to notice it so near the text).
- codeduck 4y agothank you!
- marcinreal 4y agoI was able to click on the video to view it full screen, then there is no text. (Also took me a while to figure this out.)
- meindnoch 4y agoNow Samsung has to patch their Moon template.
- tsujamin 4y agoshit came here to make this joke
- jonas-w 4y agoWhat do you mean with moon template?
- qup 4y agoThey were caught faking zoomed in photos of the moon on their phones with AI filling in details.
- asddubs 4y agohttps://old.reddit.com/r/Android/comments/11nzrb0/samsung_space_zoom_moon_shots_are_fake_and_here/ https://old.reddit.com/r/Android/comments/11nzrb0/samsung_sp...
- yonz 4y agoDid you see the HN comment? He basically said he was over redditors and loved the Convo on HN. https://news.ycombinator.com/item?id=35107601 https://news.ycombinator.com/item?id=35107601 <Insert it is known GIF>
- yonz 4y agoLol me too
- Maxburn 4y agoMe x4!
- dm319 4y agowhat does the light come from?
- tanbog5 4y agoThe Sun I think.
- op00to 4y agoThe flash is the energy (heat, light) generated by the forces of impact. The asteroid has incredible amounts of energy since it was likely moving very fast compared to the Moon, and it's got to go somewhere.
- Eduard 4y agoLayman here. Considering there is no atmosphere on the moon, and stone's conduction properties, does that mean the short flash of light (radiation) was most of the heat energy the impact produced?
- varjag 4y agoYou see the part of the spectrum the camera sensor was able to capture. Most of the energy went into displacing/melting the regolith and the shockwave.
- wheelerof4te 4y agoThere's no shockwave since there's no air on the Moon.
- Simon_O_Rourke 4y agoThe late Patrick Moore did a lot of work on what he termed transient lunar phenomena, essentially lights, or "clouds" on the moon, due to some unknown geological process. https://en.wikipedia.org/wiki/Transient_lunar_phenomenon https://en.wikipedia.org/wiki/Transient_lunar_phenomenon
- deleted 4y ago[deleted]
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- can16358p 4y agoHow rare are these impacts? Are they like once in a lifetime observations, about once a year, or what?
- NGC404 4y agoNasa has a Program called "Lunar Impact Monitoring". See: https://link.springer.com/article/10.1007/s11038-007-9184-0 https://link.springer.com/article/10.1007/s11038-007-9184-0 https://ntrs.nasa.gov/api/citations/20150021386/downloads/20150021386.pdf https://ntrs.nasa.gov/api/citations/20150021386/downloads/20... http://lunarnetworks.blogspot.com/2013/05/brightest-impact-recorded-by-nasa-lunar.html http://lunarnetworks.blogspot.com/2013/05/brightest-impact-r... The data collected by the "Lunar Reconnaissance Orbiter" can be used to estimate the frequency of impacts. https://www.lroc.asu.edu/posts/943 https://www.lroc.asu.edu/posts/943
- foobarbecue 4y agoThis paper found 222 impacts when comparing repeat LRO images (2009-present): https://www.nature.com/articles/nature19829 https://www.nature.com/articles/nature19829 I'm leading new a citizen science project called MoonDiff, comparing against older images to look further back in time -- contact me if interested. https://moondiff.org https://moondiff.org https://trek.nasa.gov/moondiff/static/moondiff_intro.webm https://trek.nasa.gov/moondiff/static/moondiff_intro.webm https://github.com/nasa-jpl/moondiff https://github.com/nasa-jpl/moondiff
- quercusa 4y agoHow Are Places on the Moon Named? https://www.smithsonianmag.com/air-space-magazine/how-are-places-on-the-moon-named-48457/ https://www.smithsonianmag.com/air-space-magazine/how-are-pl... Planetary Names: How Names Are Approved https://planetarynames.wr.usgs.gov/Page/Approved https://planetarynames.wr.usgs.gov/Page/Approved
- omoikane 4y agoRelated: https://twitter.com/oldspica/status/1630425706290360321 https://twitter.com/oldspica/status/1630425706290360321 """ I magnified the location of lunar surface impact flash observed by Fujii Daichi-san on February 23 with 25cm reflection (telescope). It's near Ideler L crater according to Fujii-san. Unfortunately I was not able to discern anything like a new crater. I thought I would be able to tell if the diameter was larger than 2km?! ... I compared with with America's Lunar Reconnaissance Orbiter, but can't really tell. Even with such a flash, was that impact crater too small to be easily seen by telescope? """