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Last night I accompanied our dog when he went out into our back yard to "take care of business" and patrol to make sure everything was in order and, as always, I took the opportunity to star gaze. I neglected to take note of the exact time, but I think it was some time between 11:30 p.m. and midnight (Pacific Daylight Time in the U.S.). In the sky directly south of the Los Angeles area I saw a round red light moving relatively slowly from west to east, which I initially thought was nothing more than the port-side navigation light on an aircraft; not at all uncommon in this area. But as I watched, what appeared to be a vapor cone, created by the object, became more and more visible, and the red light faded to orange, then yellow, then white, then back to red before disappearing entirely, though the vapor cone was still visible for several seconds. From the time I noticed it to the time it disappeared the event lasted approximately one minute, so it was nothing like the "shooting stars" I've seen from time to time. Here's a "quick and dirty" rendition of what I saw from my perspective:
I suppose it could have been an aircraft--it maintained a straight "course" (from my perspective) and speed similar to the airliners seen here. And the change in color could have been an effect of our atmosphere in the same way that it sometimes affects the perceived color of a star and makes the stars "twinkle". But the fact that the light disappeared while leaving a visible vapor cone suggests to me that the object was either natural or man-made, being incinerated as it passed through the atmosphere. Also, I can't imagine any pilot would turn off his/her aircraft's navigation lights while flying at night over such a heavily populated area, and I don't think it's possible for any known aircraft to create a vapor cone at such a "slow" speed.
I'm wondering if anyone else has ever seen such a thing? Perhaps our resident astronomer @alanfgag will read this and offer suggestions, or might have some actual information about the "event". I haven't seen mention of it on any of the local news sources, but I can't imagine I was the only person in all of southern California who saw it. So, thoughts?
Edit: Well, never mind, mystery solved. I should have checked the news reports again before I started this thread. Vandenberg Air Force Base, which is approximately 175 miles northwest of us, launched an Atlas V rocket last night shortly before 11:00 p.m. to place a U.S. "spy satellite" into orbit. Since I wasn't sure of the exact time the timing fits, and this photo taken from San Diego is a close enough match to my rather inaccurate rendering above:
I've seen a number of launches from Vandenberg AFB over the years because I've lived in this part of California my entire life, but none of them ever looked like what I saw last night so I hadn't even considered that as a possibility.
I suppose it could have been an aircraft--it maintained a straight "course" (from my perspective) and speed similar to the airliners seen here. And the change in color could have been an effect of our atmosphere in the same way that it sometimes affects the perceived color of a star and makes the stars "twinkle". But the fact that the light disappeared while leaving a visible vapor cone suggests to me that the object was either natural or man-made, being incinerated as it passed through the atmosphere. Also, I can't imagine any pilot would turn off his/her aircraft's navigation lights while flying at night over such a heavily populated area, and I don't think it's possible for any known aircraft to create a vapor cone at such a "slow" speed.
I'm wondering if anyone else has ever seen such a thing? Perhaps our resident astronomer @alanfgag will read this and offer suggestions, or might have some actual information about the "event". I haven't seen mention of it on any of the local news sources, but I can't imagine I was the only person in all of southern California who saw it. So, thoughts?
Edit: Well, never mind, mystery solved. I should have checked the news reports again before I started this thread. Vandenberg Air Force Base, which is approximately 175 miles northwest of us, launched an Atlas V rocket last night shortly before 11:00 p.m. to place a U.S. "spy satellite" into orbit. Since I wasn't sure of the exact time the timing fits, and this photo taken from San Diego is a close enough match to my rather inaccurate rendering above:
I've seen a number of launches from Vandenberg AFB over the years because I've lived in this part of California my entire life, but none of them ever looked like what I saw last night so I hadn't even considered that as a possibility.
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