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originally posted by: Cauliflower
NASA has all the esoteric keys and I doubt they are puzzled about the reflections.
Water vapor signature was pretty weak.
Even Dry lake beds on Earth reflect shiny due to the fine nature of the salt deposition.
Fine dust would settle last in a thin water vapor atmosphere.
originally posted by: abeverage
originally posted by: olaru12
I still think it's illumination and not reflection. Vulcanism would explain the difference in temperatures.
Sorry, I just don't trust NASA !
Really? Why? As Ceres rotated the object became brighter until it neared its terminus and then grew dark or dimmer which is pretty indicative of a reflection of our sun...
originally posted by: neveroddoreven99
a reply to: jaffo
Why doesn't the light seems to brighten or fade as the moon rotates? It's rotating into darkness, so we know it's not just the orbiter's movement. Shouldn't the light fluctuate as it moves towards and away from the light source if it's being reflected? My money says that some alien parked their mother ship and left the lights on.
originally posted by: AnarchoCapitalist
It's obvious that the lights are plasma discharges excavating the crater. The primary discharge is smack in the middle of a large crater gouging out a smaller "bullseye" crater in the center. That's how bullseye craters are formed. This idea that separate impact events create bullseye craters is absurd.
The same is true for the "volcanoes" on Io. Those are not volcanoes. They are plasma discharges doing the same thing we see on Ceres. And the same goes for comets. Electrical discharges create the intense x-rays, filamented tails and massive comas we see coming from comets. All of these processes are electrical.
INSTRUMENT DESCRIPTION
RPC consists of five sensors:
Ion Composition Analyser (ICA)
Ion and Electron Sensor (IES)
Langmuir Probe (LAP)
Fluxgate Magnetometer (MAG)
Mutual Impedance Probe (MIP),
as well as a joint
Plasma Interface Unit (PIU)
acting as instrument control, spacecraft interface, and power management unit.
ION COMPOSITION ANALYSER
The Ion Composition Analyser (ICA) measures the three-dimensional velocity distribution and mass distribution of positive ions. The mass resolution is sufficient to differentiate between the major particle species such as protons, helium, oxygen, molecular ions, and heavy ion clusters (dusty plasma). The ICA comprises an electrostatic arrival angle filter, a hemispherical electrostatic analyser employed as an energy filter, and a magnetic deflection momentum filter. Particles are detected using a large micro channel plate and a two-dimensional anode array.
ION AND ELECTRON SENSOR
The Ion and Electron Sensor (IES) will simultaneously measure the flux of electrons and ions in the plasma surrounding the comet over an energy range from around one electron volt, which approaches the limits of detectability, up to 22 keV. IES consists of two electrostatic analysers, one for electrons and one for ions, which share a common entrance aperture. The charged particle optics for IES employs a toroidal top-hat geometry along with electrostatic angle deflectors to achieve an electrostatically scanned field of view of 90 × 360 degrees.
LANGMUIR PROBE
The Langmuir Probe (LAP) instrument will measure the density, temperature and flow velocity of the cometary plasma. It comprises two spherical sensors mounted at the tip of deployable booms, with the sensors capable of being swept in potential to measure the current-voltage characteristic of the intervening plasma, which provides information on the electron number density and temperature. The probes can be held at a fixed bias potential to measure plasma density fluctuations and by a time-of-flight analysis of the signals from the two probes the plasma flow velocity can be determined.
FLUXGATE MAGNETOMETER
The Magnetometer experiment (MAG) will measure the magnetic field in the region where the solar wind plasma interacts with the comet. It consists of two triaxial fluxgate magnetometer sensors mounted on a 1.5 metre deployable boom that points away from the comet nucleus. One sensor is mounted near the outboard tip of the boom and one is mounted part way along the boom. The use of two sensors allows the effects of the spacecraft's own magnetic field to be minimised.
MAG will also study any magnetic field possessed by the comet nucleus, in cooperation with the ROMAP magnetometer experiment on the Rosetta lander.
MUTUAL IMPEDANCE PROBE
The Mutual Impedance Probe (MIP) will derive the electron gas density, temperature, and drift velocity in the inner coma of the comet by measuring the frequency response of the coupling impedance between two dipoles.
MIP will also investigate the spectral distribution of natural waves in the 7 kHz to 3.5 MHz frequency range and monitor the dust and gas activity of the nucleus.
PLASMA INTERFACE UNIT
The Plasma Interface Unit (PIU) acts as an interface between the five instruments that make up RPC and the Rosetta spacecraft by providing a single path for the transmission of scientific and housekeeping data to the ground and for the receipt and processing of commands sent from the ground. The PIU also takes power from the spacecraft and converts, conditions and manages it for the RPC instruments.
PIU also performs on-board data processing for the MAG sensor unit, which has no data processing capability of its own.
sci.esa.int...
How a comet grows a magnetosphere
The comet approaches the Sun
Water molecules sublimate from the comet as it thaws
The water molecules are ionised by ultraviolet light from the Sun
Newborn ions are accelerated by the solar wind electric field and are detected by the RPC-ICA instrument
The solar wind accelerates the water ions in one direction, but is itself deflected in the opposite direction
rosetta.jpl.nasa.gov...
originally posted by: AnarchoCapitalist
It's obvious that the lights are plasma discharges excavating the crater. The primary discharge is smack in the middle of a large crater gouging out a smaller "bullseye" crater in the center. That's how bullseye craters are formed. This idea that separate impact events create bullseye craters is absurd.
The same is true for the "volcanoes" on Io. Those are not volcanoes. They are plasma discharges doing the same thing we see on Ceres. And the same goes for comets. Electrical discharges create the intense x-rays, filamented tails and massive comas we see coming from comets. All of these processes are electrical.
originally posted by: AnarchoCapitalist
It's obvious that the lights are plasma discharges excavating the crater. The primary discharge is smack in the middle of a large crater gouging out a smaller "bullseye" crater in the center...
...The same is true for the "volcanoes" on Io. Those are not volcanoes. They are plasma discharges doing the same thing we see on Ceres....
originally posted by: Charizard
Anyone notice that one of the "bright spots" seems to stand up above the surface of Ceres and even cast a shadow? My eyes may be playing tricks on me but if you watch the lower left hand corner you'll see it appear. Here's a screepcap of what I'm talking about:
I can't tell if that's actually a shadow from the bright object or a shadow of a small crater behind it. Either way it definitely stands out.
originally posted by: Soylent Green Is People
a reply to: Answer
Is that the building that "melted" a car?
originally posted by: AgentSmith
FIRST RESULTS AT 67P/CHURYUMOV-GERASIMENKO WITH THE ROSETTA PLASMA
CONSORTIUM - PDF File
Charged grains: The RPC-IES electron sensor has observed high energy particles extending between a few hundred eV/q and 20 keV/q that are interpreted to be negatively charged nanograins [8] because they have energies much higher than can be attributed to either solar wind or cometary electrons.
The “singing” comet: The RPC-MAG observed the generation of low frequency waves (~ 50 mHz) within 100 km of CG at a level that was two orders of magnitude greater than the quiet solar wind spectrum measured in May 2014 (Figure 3). Observllations showed broad band excitation in the 10-200 mHz band as well as time varying discrete monofrequent excitations in the 50 mHz region which have been described as the “singing comet”.
originally posted by: torok67
They do look quite a bit like the light from large cities at night. That would be great if that is what it was. Unless we find out that the inhabitants are meat eaters that love human flesh.
no it's not. i suggest kava for you.
originally posted by: Answer
originally posted by: torok67
They do look quite a bit like the light from large cities at night. That would be great if that is what it was. Unless we find out that the inhabitants are meat eaters that love human flesh.
At least we spotted them and know where to target the nukes.
"We found a new intelligent species on another planet but they probably won't get along with us so bomb em! It's the 'Murican way!"
originally posted by: Answer
originally posted by: torok67
They do look quite a bit like the light from large cities at night. That would be great if that is what it was. Unless we find out that the inhabitants are meat eaters that love human flesh.
At least we spotted them and know where to target the nukes.
"We found a new intelligent species on another planet but they probably won't get along with us so bomb em! It's the 'Murican way!"