INCOMING!, Detection and observation of Earth-approaching asteroids. |
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INCOMING!, Detection and observation of Earth-approaching asteroids. |
Oct 14 2011, 10:13 PM
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#271
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 1967 Joined: 28-December 04 Member No.: 132 |
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Oct 15 2011, 12:10 AM
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#272
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Member ![]() ![]() ![]() Group: Members Posts: 508 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
I see your logic centsworth the 2nd!
-------------------- CLA CLL
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Oct 15 2011, 10:17 AM
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#273
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 1146 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
the paper is making some buzz on the internet: Was the “First Photographed UFO” a Comet?
-------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
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Feb 5 2012, 09:44 PM
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#274
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![]() Member ![]() ![]() ![]() Group: Members Posts: 752 Joined: 23-October 04 From: Greensboro, NC USA Member No.: 103 |
Fireball reported over the Washington DC area Friday night per this news report. Also an interesting video linked on that page - a bolide over Texas/Oklahoma as seen by a police cruiser camera during a traffic stop.
-------------------- Jonathan Ward
Manning the LCC at http://www.apollolaunchcontrol.com |
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Feb 9 2012, 06:42 AM
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#275
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 2164 Joined: 1-December 04 From: Marble Falls, Texas, USA Member No.: 116 |
Both my wife and I saw that Texas-Oklahoma bolide from our place near Marble Falls, Texas. It was amazingly bright and appeared to move surprisingly slowly across the sky. I caught it out of the corner of my eye as I walked between two buildings. At first I thought, "That's the moon," but then I realized that the moon couldn't be north of me. I turned around and walked back to the view between my house and the garage for a second look to see the fireball die out on the horizon.
My wife jumped up from her seat in our living room when she saw it through the window. She ran out onto the back deck, initially thinking it was an airplane in flames. She watched it disappear as it descended toward the horizon. Her recollection was that its color was distinctly green. We both thought that it fell within a few miles of our house, but apparently it fell near Dallas, about 200 miles north of here. I hope someone is able to collect some fragments from this one. -------------------- ...Tom (thinks he should use more emoticons)
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Feb 11 2012, 06:51 PM
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#276
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Member ![]() ![]() ![]() Group: Members Posts: 683 Joined: 20-April 05 From: Sweden Member No.: 273 |
Sci-Fi enthusiasts will note that if those observations in Zacatecas were really a fragmented comet it means that the scenario in S. M. Stirling's "The Peshawar Lancers" very, very nearly came true.
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Mar 4 2012, 09:43 PM
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#277
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Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 2930 Joined: 4-November 05 From: North Wales Member No.: 542 |
A British meteor: http://www.meteorwatch.org/2012/03/04/fire...3rd-march-2012/
Did anybody here see it? (No such luck in my case, though I have enjoyed best-ever views of Mercury these last two evenings.) |
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Mar 5 2012, 01:58 AM
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#278
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Member ![]() ![]() ![]() Group: Members Posts: 501 Joined: 2-July 05 From: Calgary, Alberta Member No.: 426 |
Apparently a good sized bolide (~100 kg) came down over Saskatchewan several days back as well. Oddly enough it landed in the same part of the province that experienced a good sized fall about three or four years ago.
This latest one was visible from Calgary. I'd have liked to have seen it, but unfortunately I wasn't outside at the time. Pity. |
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Mar 5 2012, 07:52 PM
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#279
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![]() Member ![]() ![]() ![]() Group: Members Posts: 486 Joined: 22-January 06 Member No.: 655 |
I've never seen a decent long-lived meteor despite living in an area with little light-pollution. I've seen meteors many times whilst on holiday in Wales in the 70's with my parents but they were always a few seconds duration, and by the time I zeroed in on them they'd gone. Disappointing.
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Mar 6 2012, 11:13 PM
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#280
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Senior Member ![]() ![]() ![]() ![]() Group: Moderator Posts: 6476 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
In addition to the 10 Aug 72 daylight fireball over the western US, I saw a terrific Perseid in the 70s. Around mag -6, and it exploded right in the bowl of the Big Dipper...orange glow remained for at least 2 min. Unforgettable.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Mar 6 2012, 11:32 PM
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#281
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Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 2930 Joined: 4-November 05 From: North Wales Member No.: 542 |
I've seen one. It was sometime in the 1980s and I was on a city street whilst on holiday in Ireland. I reported the observation with a sketch of the trajectory relative to the buildings.
It's a shame that we spend so little time in sight of the sky the way we live now. On the other hand the lucky few are increasingly likely to carry recording devices, so it's not all bad. |
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Nov 8 2012, 03:17 AM
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#282
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![]() Interplanetary Dumpster Diver ![]() ![]() ![]() ![]() Group: Moderator Posts: 4043 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Looks like we got a nifty visitor! http://www.mnn.com/earth-matters/space/sto...d-in-deep-space
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Nov 8 2012, 04:29 AM
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#283
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Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 4514 Joined: 5-April 05 From: Canada Member No.: 227 |
This is a composite of the three images giving a rough idea of the overall shape - the caption says it's a roughly pole-on view.
Phil -------------------- ... because the Solar System ain't gonna map itself.
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Feb 11 2013, 06:12 PM
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#284
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 1146 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
info on "two independent but mutually supporting" asteroid deflection missions, one by the APL, the other by ESA
http://www.esa.int/Our_Activities/Technolo...xperiment_Ideas -------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
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Feb 15 2013, 01:03 AM
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#285
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Admin Posts: 2419 Joined: 21-December 05 From: Canberra, Australia Member No.: 615 |
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Lo-Fi Version | Time is now: 22nd May 2013 - 12:57 AM |
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