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Everything posted by lajoswinkler
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Valentina decided, on her own, not to land on the crater rim because if the anomaly creates another disturbance, Kerpernicus might fall of the edge. Manual precision landing resulted was 100 m away from the WalEye landing spot. 74 m/s of delta v was left in the descent stage. Engines are shut down. Because Kerpernicus had to save on weight and because Kerbals forget important stuff, it only had 100 units of charge available. However, Bill attached an RTG unit he always carries around. Some local measurements will be made soon, and visiting the anomaly and crushed WalEye will be the last thing to do as immediate evacuation might be needed.
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You're insane, but godspeed!
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Kerpernicus lander detaches from Kron 4 and prepares for deorbiting. The ship is visible through the main window. Valentina prepares the engine. First in a series of four burns.
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The team was discussing the manned landing on the crater rim. Bob is quite enthusiastic, but Bill is reluctant. Valentina offered to be the pilot of the lander as Jebediah seems to be too adventurous, and adventures so far from Kerbin are not needed. Kerty was not available for a comment, being too busy keeping Jebediah off the Kerpernicus lander control panel.
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Bob managed to pull out two more photos before WalEye died. Apparently the rover has been smashed into the object and now lies at its bottom. The surface texture is not smooth. There are some concerns regarding the landing there now.
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Rosetta, Philae and Comet 67P/Churyumov-Gerasimenko.
lajoswinkler replied to Vicomt's topic in Science & Spaceflight
It does not vaporize, it sublimates and it happens because the pressure is incredibly low. Total vacuum for our intents and purposes. The surface shouldn't get relatively hot (to our human experience) because, among other reasons, the volatiles sublimating are carrying away the heat. Also I'm quite sure the ESA designers thought about those basic requirements. No reason to think Philae might get rekt like that. I've already explained that - if there were such extremely localized jets, the surface would look foggy from far away. It's quite possible you'd barely be able to see the jet if you were standing in it. It simply isn't active as Hollywood taught you. If it were, the comet would not have existed for billions of years. It would be consumed in decades. -
WinkAllKerb' , how are those images related to this thread?
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Exactly. I played a demo of the first one and got bored of it very quickly. I had no idea there was a second edition until I saw one of those annoying let's play videos, and then recently I found out there's a fourth edition. Geez. Talking about beating a dead horse.
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Rosetta, Philae and Comet 67P/Churyumov-Gerasimenko.
lajoswinkler replied to Vicomt's topic in Science & Spaceflight
What heat? The surface of the comet is incredibly cold. -
Rosetta, Philae and Comet 67P/Churyumov-Gerasimenko.
lajoswinkler replied to Vicomt's topic in Science & Spaceflight
Do you have any idea how large even the smallest of these jets is compared to a washing machine sized box? -
This is an old concept that somehow surfaces every now and then, and then the media made up out of part time scribblers feeds it to the general public which has memory ability of a goldfish. Energy density of such power sources is laughably low, which is pretty much the most important thing to consider. It makes these things inefficient and therefore such system applied to a town would require more energy and more often charging. (Also, there is no such thing as ecological energy. Ecology is a science that does not deal with power production and environment protection. Proper term is environmentally friendlier power source, because none is friendly).
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WalEye reported a magnetic field disturbance and loss of brakes less than 200 m away. Last photo transmitted. Bob and the team are working frantically on establishing contact with the rover.
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Anomaly spotted. Scientist Bob estimates the diameter of the object to be around 100 m and highly reflective around 580 nm, meaning it's really yellow as it was observed from orbit. Bob is confused and issues a command to WalEye to get closer.
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WalEye sent its first image. Quality is bad because Linus Kerman used a cheap camera for the rover. - - - Updated - - - New image.
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WalEye deployed and deorbiting. - - - Updated - - - WalEye rover reports touchdown. Telemetry says it's less than 650 m away from the initial target spot. Kron 4 is now behind the horizon, so it can't receive the images.
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Rosetta, Philae and Comet 67P/Churyumov-Gerasimenko.
lajoswinkler replied to Vicomt's topic in Science & Spaceflight
To make the body move, there needs to be a net positive force acting on it. If all of the surface is exuding gas, the particles go in pretty much all directions. Why would the lander be thrown somewhere by an uniform field of escaping gas? Also, the shadow of Philae does not exude gas, or does it at a much lower rate. The shade does move, but that means the Sun moves, too. When the shadow is sideways, Sun's rays are delivering way less power per unit of area. Rotational period of the comet is a bit above 12 h so it means around 6 hours of light. I'm not convinced. -
Kron 4 passed made a first pass over the area where the probe detected a bright object. By comparing the sight with old imagery, it was apparent the object has either moved or rolled down the crater wall. Its increase in brightness can be explained both by increasing albedo or actual size. On the next pass, the ship will deploy WalEye, the lander.
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Kepler-452b Kepler Announcement 23 July
lajoswinkler replied to eddiew's topic in Science & Spaceflight
This is obviously an attempt at making this NASA's department more popular, to get more budget. It really isn't a discovery worth of such public popularity. What New Horizons is doing is way more important.