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Unmanned Spaceflight.com > All posts by a member| Posted on: May 28 2008, 08:05 PM | |
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Member  Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462 
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Interested as I am in big engineering stuff, I just watched Megastructures (Channel 5 UK) about the Amundsen-Scott South Pole Research Station. Apparently the IceCube neutrino detector situated there under the ice will...detect neutrinos frozen in the ice millions of years ago.  |
| Forum: Chit Chat · Post Preview: #115987 · Replies: 549 · Views: 459685 |
| Posted on: May 26 2008, 09:48 AM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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It was a great night and made all the better that we all enjoyed the tension and joy together. That landscape looks so desolate but a mere centimetres below that surface lie such possibilities. |
| Forum: Phoenix · Post Preview: #115312 · Replies: 115 · Views: 107895 |
| Posted on: May 26 2008, 08:18 AM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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Congratulations Phoenix and JPL! Great landing and a great experience last night. Never seen UMSF with so many users! |
| Forum: Phoenix · Post Preview: #115295 · Replies: 207 · Views: 605431 |
| Posted on: May 25 2008, 06:48 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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I'll try watching the 'Guided tour of Mars landing' video on: http://www.nasa.gov/mission_pages/phoenix/main/ Watching the simulation as the real Phoenix is doing the same should be pretty cool. Then its wait for the first images, depends on how tired I get! |
| Forum: Phoenix · Post Preview: #114711 · Replies: 174 · Views: 99231 |
| Posted on: Apr 7 2008, 05:55 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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Thanks for your help. I really hope someone is planning some more observations in August 2010. I'd love to write a piece on it! |
| Forum: Lunar Exploration · Post Preview: #111944 · Replies: 2 · Views: 6263 |
| Posted on: Mar 20 2008, 07:38 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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I've been inspired by Arthur's writing since my late teens and feel the world has truly lost one in 6.5 billion. It's a shame Arthur never got to experience space travel first hand or to walk on the Moon but I feel it was fitting that at the time of his death, day was breaking over Mare Imbrium; the backdrop to so many of his works. Farewell Arthur. |
| Forum: Chit Chat · Post Preview: #111058 · Replies: 52 · Views: 41235 |
| Posted on: Mar 4 2008, 09:39 AM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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A little off topic, but an inaccuracy nonetheless... In Sheffield (UK) there used to be a bus called the 'Bright Bus' which ferried (gifted?) school kids around the city. To enhance its 'Bright' (ie intelligent) image it was adorned with the names of many luminaries of physics such as Einstein and Newton. What detracted from this was that the name 'Hawkins' was also emblazoned across the vehicle's side....guess the signwriter wouldn't qualify to ride the bus!  |
| Forum: Chit Chat · Post Preview: #110404 · Replies: 549 · Views: 459685 |
| Posted on: Feb 29 2008, 07:06 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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Very interesting story on SPACE.com regarding currently unexplained anomalies in the velocities of spacecraft after their Earth flybys. http://www.space.com/scienceastronomy/0802...ft-anomaly.html Perhaps the twisting of spacetime induced by Earth's rotation could be gently altering the spacecraft's velocity. http://www.voanews.com/english/archive/200...FTOKEN=51791561 In any case its pretty cool to have an unexplained force meddling with our best laid plans. |
| Forum: Conferences and Broadcasts · Post Preview: #110209 · Replies: 12 · Views: 11526 |
| Posted on: Feb 27 2008, 08:00 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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Looking at the graphic on Emily's TPS blog, Apophis should pass relatively close to the Moon after its near miss of Earth. (Its orbit having been deflected by terrestrial gravity). Does anyone know how close it could get to the Moon and if there is any chance of an impact? |
| Forum: Cometary and Asteroid Missions · Post Preview: #110045 · Replies: 65 · Views: 73716 |
| Posted on: Feb 13 2008, 08:25 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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QUOTE (Phil Stooke @ Feb 13 2008, 07:26 PM)  That was you??? I'll be darned. Phil It's funny but I bet a lot of people on UMSF have had contact with other members and never realised it! I'll try and send you a copy of the relevant page Phil. |
| Forum: Conferences and Broadcasts · Post Preview: #109266 · Replies: 83 · Views: 75397 |
| Posted on: Feb 13 2008, 06:56 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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Look out for the March 2008 issue of UK magazine Astronomy Now (Out any day now). I've reviewed The International Atlas of Lunar Exploration and also interviewed the humble superstar himself!  |
| Forum: Conferences and Broadcasts · Post Preview: #109261 · Replies: 83 · Views: 75397 |
| Posted on: Feb 8 2008, 11:02 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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One interesting feature MESSENGER will get a good look at during the second flyby is the area of Mercury's surface dubbed 'Weird Terrain.' This jumbled region of the planet's surface is antipodal to Caloris and marks the focal point of seismic waves generated by the impact. Mariner 10 only saw half of this disturbed region, so I'm looking forward to seeing just how much havoc Caloris wreaked on the other side of Mercury. I wonder if a good look at the Weird Terrain will yeild any new info about Mercury's interior? (at least at the time of the Caloris impact). |
| Forum: Messenger · Post Preview: #109117 · Replies: 164 · Views: 361376 |
| Posted on: Feb 5 2008, 06:01 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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QUOTE (elakdawalla @ Feb 4 2008, 08:38 PM) This happens to me all the time, whenever I visit a UMSF post via a Google search. It's easy to fix. What's happened is that your "Display Mode" has been switched to Outline (which must be the display mode that Google uses). To fix it, go to the "Options" dropdown menu at the upper right side of your screen (in the same bar as it says "Browsing UMSF Forum," the title of this topic) and select "Switch to: Standard" from the list. --Emily Thanks helvick & Emily! I never noticed that Options dropdown before! |
| Forum: Chit Chat · Post Preview: #108956 · Replies: 28 · Views: 27078 |
| Posted on: Feb 4 2008, 08:30 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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For a while now when I'm logged into UMSF, forum posts have been displayed as the first line of text only and in order to read the whole post you've got to click on the text. This never used to be the case for me and when I sign out, posts go back to being displayed in their entirity. Does anyone know how I can get back to seeing full posts as I scroll down a forum rather than just the tantilising first few words? |
| Forum: Chit Chat · Post Preview: #108903 · Replies: 28 · Views: 27078 |
| Posted on: Jan 30 2008, 08:54 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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QUOTE (ngunn @ Jan 30 2008, 08:23 PM) Agreed, it was excellent. A real scientist who could really communicate, and no overbearing portentious music. Incidentally there is a programme on BBC Radio 4 at 9pm tonight (soon!) about growing plants in space. I had a feeling it would be a good programme when I saw Dr Brian Cox was was presenting it. He has to be one of the most infectiously enthusiastic scientists around; which is something that is really needed these days. He really should have his own series on Quantum Physics, I'm sure if anyone could do this subject justice and describe it in a clear and eloquent way, it would be him. Well done Horizon. |
| Forum: Conferences and Broadcasts · Post Preview: #108656 · Replies: 34 · Views: 33136 |
| Posted on: Jan 26 2008, 09:20 AM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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Does anyone know if asteroid 1999CG9 was ever confirmed as a rogue piece of the Moon knocked off by a large impact? http://www.klet.org/html/1999cg9.html It would be fascinating to try and match 1999CG9's composition with the lunar surface to try and identify its parent crater or basin. A study of the asteroid's orbital stability would also yield important clues as to how long it has been in solar orbit, and therefore its likely lunar originating site. I've contacted the people involved in the original identification of 1999CG9 as likely of lunar origins but have had no reply. |
| Forum: Lunar Exploration · Post Preview: #108452 · Replies: 2 · Views: 6263 |
| Posted on: Jan 21 2008, 08:27 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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Interesting interview with Scott Murchie on MESSENGER's first Mercury flyby: http://www.physorg.com/news120143527.html |
| Forum: Messenger · Post Preview: #108157 · Replies: 591 · Views: 607978 |
| Posted on: Jan 15 2008, 05:39 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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QUOTE (IM4 @ Jan 15 2008, 06:47 AM) By the way a strange faint dot can be seen in the last aproach image. Artifact, star or even MOON? Looking at JPL's Solar System Simulator - That dot is very close to where Earth should be as seen from MESSENGER. |
| Forum: Messenger · Post Preview: #107586 · Replies: 591 · Views: 607978 |
| Posted on: Dec 16 2007, 12:47 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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The idea that these animals were present and in the immediate vicinity when a meteorite hit the Earth is interesting. However, I find it quite unlikely. To me, a much more plausible explanation is that our ancestors were hunting with meteorite material. All they had to do was find an iron meteorite, smash it into sharp shards and attach the shards to wooden poles to form an effective hunting spear. The meteorite material embedded in the tusks and bones would therefore simply mark the impact point of such a weopan. |
| Forum: Cometary and Asteroid Missions · Post Preview: #105747 · Replies: 46 · Views: 48794 |
| Posted on: Dec 5 2007, 10:04 AM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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Personally, I'm looking forward to seeing MESSENEGER's MDIS images. On Jan 14 MDIS will first see Mercury as a crescent showing previously mapped territory. After the flyby MDIS will take images of the planet in a gibbous phase showing 25% 'new' territory and the huge Caloris impact basin will be visible near the centre of the disc. Plus, after the encounter and travelling at 140,000 mph, MESSENGER will be the fastest spacecraft of all time! It should be a real day to remember! |
| Forum: Messenger · Post Preview: #105090 · Replies: 591 · Views: 607978 |
| Posted on: Nov 28 2007, 05:30 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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QUOTE (charborob @ Nov 26 2007, 05:30 PM) Here's a question for the image wizards on this forum. Using the stereo images taken by Kaguya's Terrain camera, do you think it may be possible to generate views of the Moon from a surface perspective? I mean, vertical and oblique views taken from orbit are interesting, but if we could look at lunar scenery as if we were standing on the surface, wouldn't that be mind-boggling? It would be possible to virtually visit places that will never be seen (either by rover or by humans) in our lifetime. Imagine standing on Tycho's rim and looking inside! Or whatever your favorite place is. Maybe in a few years Google will have all the lunar 3D data available for viewing this way on Google Moon. In the meantime, what can we do with the images (if the Japanese make them available, of course)? Here's an example of some simulated surface views of the Apollo 17 landing site in the Taurus-Littrow Valley. These were done pior to the mission and match up pretty well with the views actually seen by Cernan and schmitt. http://www.hq.nasa.gov/alsj/a17/a17.horizons.jpg |
| Forum: Lunar Exploration · Post Preview: #104726 · Replies: 502 · Views: 634783 |
| Posted on: Nov 27 2007, 08:26 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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QUOTE (Phil Stooke @ Nov 27 2007, 06:25 PM) Thanks. I'm surprised that copies are appearing as quickly as this. But that's good, of course. I have set up a page on my website to accomodate corrections, if people have any to point out. I will eventually get around to adding them to a later edition. Phil I think I may have beaten the rush as my copy came direct from the publishers for the purpose of reviewing  It's a safe bet it'll be a good review  |
| Forum: Conferences and Broadcasts · Post Preview: #104687 · Replies: 83 · Views: 75397 |
| Posted on: Nov 27 2007, 06:08 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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Got my copy today and was amazed at just how much information and how many images are packed into it! It's absolutely fascinating and full of images I've never seen before. Just flicking through and looking at the pics will devour my entire evening! Congratulations Phil, you've done yourself proud |
| Forum: Conferences and Broadcasts · Post Preview: #104676 · Replies: 83 · Views: 75397 |
| Posted on: Nov 26 2007, 07:45 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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The impact site of the Apollo 17 LM Ascent Stage should be pretty conspicuous. http://www.hq.nasa.gov/alsj/a17/a17.labeled.TL.jpg Does anyone know if a study of Clementine images has shown the impact site? I've had a look at the 2005 Hubble image of Taurus-Littrow but the resolution isn't high enough. You'd think that slamming the Ascent Stage into the massif at a low angle would create a big bright streak at the point indicated in the linked image. |
| Forum: Lunar Exploration · Post Preview: #104623 · Replies: 8 · Views: 16947 |
| Posted on: Nov 3 2007, 10:35 PM | |
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462
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| Forum: Manned Spaceflight · Post Preview: #103298 · Replies: 42 · Views: 47868 |
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