A flow of ionized particles emanating from the sun at supersonic speeds.

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124 views

Earth magnetic field [closed]

I gather that, in these days, the most common explanation for the Earth magnetic field existence and strength is the theory of convetive currents of molten iron and nickel atoms in the outer core of ...
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2answers
91 views

Why do electrons and protons in Van-Allen-Belt behave like this?

In a book I have read that in the Van-Allen-Belt there are the protons and electrons from the solar winds. What I do not get, is why they should behave that way illustrated in this image. Why should ...
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1answer
65 views

Passively moving air [closed]

I'm interested in channeling air into an underground condenser to generate water. Which of these approaches would be most appropriate, and is there a better approach I haven't considered? A: A ...
2
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1answer
22 views

total energy in a typical solar Hard X ray flare

The RHESSI (Reuven Ramaty High Energy Solar Spectroscopic Imager) website lists solar Hard X ray flares with energy of each flare given in a range, say, 50 - 75 keV. We presume that is the energy ...
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4answers
3k views

Is it possible to sail “close hauled” with a solar sailship?

I have not been able to find a clear or decisive answer about this. On Earth, a ship sails close hauled when the ship is, to some degree or another, facing into the wind. This is made possible with ...
2
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0answers
62 views

Aurora borealis forecasting, some technical details

I have an idea to make a software tool (with some really user friendly interface) for predicting auroras on any place on Earth. I do know some physics behind the phenomenon, but only basics, like it ...
14
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4answers
463 views

What mechanism is responsible for the creation of these dunes on Comet 67P/Churyumov-Gerasimenko?

What mechanism is responsible for the creation of these dunes on Comet 67P/Churyumov-Gerasimenko? The following high resolution picture from ESA's Rosetta mission shows the dunes: At a distance ...
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0answers
32 views

If i had a aero-nautical object [closed]

If i had a aero-nautical object with a span of 10 feet and a weight of 40 pounds with a strong gale blowing do you think i could make it off a cliff with out plummeting to total utter death?
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2answers
58 views

Radiation pressure question

If radiation pressure is a pressure exerted upon any surface exposed to electromagnetic radiation then why do planets such as the ones in our solar system maintain consistent orbits? I'm guessing the ...
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3answers
81 views

Is “atmospheric geostationary satellite” feasible with current technology?

Meaning by "atmospheric geostationary satellite" a vehicle capable of hovering 30 km above Earth surface, hence insde atmosphere, for unlimited time, making use of air propellers, solar panels and ...
3
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2answers
260 views

How could a solar sail be powered 'Upwind' by craft's own (laser) light source?

I've just watched a Discovery Science program - Alien Encounters featuring SETI luminaries such as Jill Tarter, Frank Drake and Nick Sagan. A serious discussion on how to interpret ET messages coupled ...
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2answers
41 views

Aurora Effect from Galactic Wind?

The Solar Wind creates auroras due to interactions with Earth's Magnetic Field. Do we witness any similar effects from the Galactic Wind interaction with the Sun's Magnetic Field?
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1answer
273 views

How the mass loss rate by stellar wind is calculated for massive stars?

I have been searching for some examples about the different rates at which massive stars lose their mass by stellar wind, but I haven't been able to get anything other for the sun. To be more ...
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0answers
90 views

Is that true that neutron activity on Earth in 2013 is unusual?

I have just read curious statement on this website: http://www.trinitas.ru/rus/doc/0016/001d/00162241.htm (unfortunately this is in Russian, but I will try to translate) "В заключение можно отметить, ...
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2answers
88 views

Coronal Mass Ejection and its effect on Earth's Orbit

Do CMEs (Coronal Mass Ejections) have an effect on Earth's Orbit around the sun? Given the the Earth and Sun are essentially two large magnets, one in orbit around the other. If so, how much of an ...
0
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2answers
101 views

Yearly onshore wind turbine energy production [closed]

I am trying to work out the yearly energy production of an onshore Siemens SWT-3.0-101, hub height 94m, total height 144,5. Here is the power curve at each wind speed level worked out through a ...
0
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2answers
132 views

Is any percentage of the regular solar wind that penetrates into Earth's atmosphere able to reach Earth's surface?

Is any percentage of the regular solar wind charged ions able to penetrate the earth atmosphere? if so, can it be detected or measured on the surface of earth at sea level?
2
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2answers
176 views

Does gravity affect radiation incident on the planet?

Just curious ... Known facts: When outside the atmosphere levels of radiation are higher Typically such radiation is CBR, Solar Radiation Question: If the matter of the atmosphere and ...
8
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2answers
431 views

What exactly is the composition of radiation in interplanetary space?

The articles I found on radiation in the solar system mostly dealt with solar wind, I wonder about other types. Is there a breakdown that tells me, withhin an order of magnitude, at least what ...
0
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1answer
69 views

Could a coronal mass ejection be responsible for this? [closed]

Around 9pm (GMT) on June 9th, we noticed that the two security cameras had gone dark. Around the same time, a photo voltaic sensor responsible for keeping the yard lights on at night also failed. In ...
0
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1answer
196 views

Understanding particle's space travel

Before the discovery of dark matter, the prevailing popular understanding of Space content is that of celestial bodies (planets, stars..etc) floating in 'void' and emitting particles and waves ...
7
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2answers
31 views

Predicting solar storms?

Quote from BBC "A strong solar storm is expected to hit Earth shortly, and experts warn it could disrupt power grids, satellite navigation and plane routes." How is it that we are aware of a massive ...
1
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1answer
583 views

What is a Hot Flow Anomaly, and can we see the terrestrial ones?

I just saw the Weather Channel discussing "solar flares on Venus"... Not getting into the horrid scientific illiteracy of today's media, I finally managed to dig up a little info as to what it was ...
3
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1answer
257 views

What is the Correlation Between Solar Wind Velocity/Density and Sunspot Count?

We have the Advanced Composition Exporer (ACE), which orbits in the L1 libration point as a source for solar wind velocity and density (particles/cm^3) data. Typically, at a velocity in the range of ...