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Questions tagged [space-weather]

Questions regarding cosmic radiation sent out by objects in space such as the sun.

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Can the term “space weather” refer to the environment in deep space, or is it only in reference to Earth's (or another planet's) upper atmosphere?

@OscarLanzi's interesting answer and my comment there led me to read Wikipedia's article Space weather. The article exclusively seems to only talk about effects in Earth's upper atmosphere; the only ...
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What are the long term effects of Space Weathering on man-made materials?

I've read on Wikipedia about Space Weathering. It's described as the type of weathering that occurs to any object exposed to the harsh environment of outer space. Unlike on Earth, a man-made vessel ...
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Which LEO satellite lost over 30 km of altitude in the geomagnetic storm of 13-14 March 1989?

This answer includes the following information: During the great geomagnetic storm of 13-14 March 1989, tracking of thousands of space objects was lost and it took North American Defense Command (...
7
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1answer
308 views

Has NORAD ever experienced a catastrophic event and “lost track of” a bunch of objects?

NORAD tracks satellites for several very important reasons. From time to time an object might become temporarily mis-identified or otherwise confused with another object, these things usually get ...
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2answers
227 views

How can a solar storm be predicted?

Satellites like DSCOVR are used to predict solar storms. How does that work? If the satellite is orbiting L1 and "watches" the sun, how can the signal be back on earth before a storm arrives? How ...
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1answer
1k views

How to check, if there is currently an increased solar activity?

I've got an email, that because of the increased solar activity, more cosmic ray-s are hitting the earth. And for this reason, humans experience more stress and headache. I know, it's not true. But I ...
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2answers
6k views

How Do Astronauts Not Freeze In Space? [duplicate]

I know they have systems that flow water through there suits to keep them cool. But how do they block out the coldness that is space? What materials do they have for this?
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How does ISS protect astronauts from Coronal Mass Ejections?

The related question's answer tells about the mitigation procedures for the duration of a 'proton storm'. In particular, The ISS crew did receive a Solar weather warning several times and were ...
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1answer
950 views

How can solar wind be supersonic?

I was reading this Wikipedia article on Heliosphere and was confused a bit: this supersonic wind must slow down to meet the gases in the interstellar medium How can sonic speeds exist in space? ...
8
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1answer
988 views

How are solar panels protected from the Sun?

In 2003, JAXA sent a probe, Hayabusa, to an asteroid named Itokawa. On the way to the asteroid, there was a large solar flare which damaged the probe's solar cells. I've been searching through the ...
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0answers
188 views

How do solar flares and coronal mass ejections create proton storms?

Wikipedia has this to say about solar particle events: A solar particle event (SPE), or "proton storm," occurs when particles (mostly protons) emitted by the Sun become accelerated to very high ...
5
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1answer
336 views

Speed of solar coronal mass ejection

From this video, it appears that material is being flung outward from the limb of the Sun at pretty high speed. Considering that the Sun is some 1.4 million km in diameter, and at least one band seems ...
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1answer
489 views

How risky is launching a rocket during a geomagnetic and solar radiation storm?

Today's launch of Arianespace Vega rocket deploying Sentinel 2A Earth observation satellite for ESA & European Commission went ahead as planned, lifting off on June 23, 2015 at exactly 01:51:58 ...
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1answer
148 views

Can the direction of a solar storm be predicted near Earth? Will it come from one direction?

So you are in a high orbit, or Lunar orbit, or at an EML point, and a solar proton event is on its way. Does the Earth's magnetic field make it difficult to predict the direction of impact on your ...
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How was this image of the sun taken and what does it show?

In the last few years amazing images of the sun have been around. They are from the Solar Dynamics Observatory's AIA instrument. The one below shows super-hot iron atoms. So, am I looking at field ...
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1answer
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Would working at night on the surface of Mars/Luna protect from radiation?

Radiation is often mentioned as a serious hazard to the health of astronauts and colonists on worlds without magnetospheres, I presume that the majority of this harmful radiation is the ultraviolet ...
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1answer
173 views

Can change in sun's polarity affect satellites?

I recently read that the sun's polarity is going to change. Will this effect cause damage to satellites and/or affect its communication with ground stations?
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1answer
17k views

How are the astronauts in the ISS protected from solar flares?

The Sun emits electromagnetic radiation which may consist of UV, IR, X-rays and also the charge particles that are emitted from the sun which are harmful to humans. But during intense solar flares it ...
14
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1answer
225 views

If I am a spacecraft operator, at what space weather activity levels do I start getting nervous?

Say I operate a satellite in LEO, and I think I have instruments on board that will be sensitive to space weather events. If I keep an eye on space weather activity levels, when do I start turning off ...
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301 views

What, if any, plans have been made for handling events like a geomagnetic reversal?

Although a substantial changes in the Earth's magnetic field (e.g., as associated with a geomagnetic reversal where the magnetic field strength may be reduced to 5% of the current strength) are rare ...