What is the Earth's magnetic field and how does it protect us from space debris?

  • Thread starter cbsgorams
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    Shield
In summary, the Earth has a magnetic field that provides some protection from cosmic rays and solar flares. However, it does not protect against meteorites and asteroids. These objects can still penetrate our atmosphere and reach the ground, but most are burned and melted in the process. The atmosphere is our main defense against physical objects, but the magnetic field protects us from radiation and subatomic particles. The magnetic field also creates the beautiful Northern Lights, and can be compared to a nice umbrella in a nasty storm.
  • #1
cbsgorams
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ive heard about the Earth having a shield above it that fends off astriods and metorights can some please explain this to me and how long it will last and everything thank you its called the
magnetic field







cbsgorams
 
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Must I say more? Ha. Inside joke.
 
  • #3
Hi cbsgorams, and Mr. dude! The Earth's magnetic field offers some protection from cosmic rays and solar flares, but meteorites and asteroids are not affected. They come crashing through without a whimper. Fortunately, not many are asteroids.
 
  • #4
Our atmosphere is a pretty good shield for most of the stuff that comes our way. Ever see a meteor?
 
  • #5
Integral said:
Our atmosphere is a pretty good shield for most of the stuff that comes our way.

Where "most the stuff" means the daily impact of dust and sand-grain sized debris. The larger the object, the more likely that it will make it through the atmosphere and hit the ground.
 
  • #6
As the old guys said, the atmosphere is the only defense we have against physical masses larger than atoms. A bright meteor that you might see on a regular basis is about the size of a sand grain. Anything large enough to survive the fall and become a meteorite is visible as a pretty intense fireball. (I actually phoned the Detroit airport once when I was about 15 because I witnessed a boloid—exploding meteor—and thought that it was a plane going down.)
The seething mass of radiation and subatomic particles that the magnetic field deflects would scare the **** out of you if you could see it. We live in one really nasty storm and happen to have a nice umbrella.
 
  • #7
1- The magnetic field shields us from Nasty Solar flares. A good example of the magnetic field shielding us is the Aurora Borealis you see in the Northern Hemisphere.

2- The Earth's atmosphere is made up of several layers consisting of Stratosphere, troposphere, mesosphere, ionosphere etc etc. They all have varying temperatures and pressures. Some of them are more than 2000F. Most foreign objects entering the Earth's atmosphere are burnt and melted through these layers. One example is the NASA spacecraft that crashed 2 years ago.
However bigger objects do penetrate the Earth's atmosphere and land even though they would have suffered some level of burns.
 
  • #8
Danger said:
As the old guys said, the atmosphere is the only defense we have against physical masses larger than atoms. A bright meteor that you might see on a regular basis is about the size of a sand grain. Anything large enough to survive the fall and become a meteorite is visible as a pretty intense fireball. (I actually phoned the Detroit airport once when I was about 15 because I witnessed a boloid—exploding meteor—and thought that it was a plane going down.)
The seething mass of radiation and subatomic particles that the magnetic field deflects would scare the **** out of you if you could see it. We live in one really nasty storm and happen to have a nice umbrella.

Ha ha ha! The last part of this post is a very good way to describe it. :rofl:
 

What is the Earth's "life shield"?

The Earth's "life shield" refers to the layers of the atmosphere, magnetic field, and ozone layer that protect the planet from harmful radiation and space debris.

How does the Earth's "life shield" protect us?

The layers of the atmosphere act as a barrier, absorbing and scattering harmful solar radiation. The magnetic field deflects charged particles from the sun, while the ozone layer blocks harmful UV radiation.

What would happen if the Earth's "life shield" was compromised?

If the Earth's "life shield" was compromised, we would be exposed to higher levels of radiation and space debris. This could lead to various health issues and damage to the planet's ecosystems.

Can the Earth's "life shield" be repaired or strengthened?

The Earth's "life shield" is constantly changing and adapting, and it is not something that can be easily repaired or strengthened. However, we can take steps to reduce our impact on the environment and preserve the health of our planet's protective layers.

How does climate change affect the Earth's "life shield"?

Climate change can have a significant impact on the Earth's "life shield." As the Earth's temperature rises, the atmosphere and ozone layer can become thinner and more vulnerable to damage, making our planet less protected from harmful radiation and debris.

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