We are already on a planet with a magnetic field and yes magnetic fields are what protect the planet from various dangers. Not to mention nearly every planet we have seen has a magnetic field (save venus). It is believed that the magnetic fields of planets save them from solar winds which would otherwise slowly strip the atmospheres of planets by taking out chunks of atoms every time they hit. Mars has an extremely weak (or none according to many scientists) magnetic field and as such the solar winds bash into it and scoop out ions from the planet.
Overall conclusion: Yes, you want to visit a planet with a strong magnetic field, it's basically more protection (in theory at least).
Visit to a Small Planet was created on 1960-02-04.
There are many reasons you may want to visit Mercury. For one, the gravity is about 1/3 of that on Earth, so you can have the same low gravity effect as on the moon. Some phenomena that occurs on Mercury that may be of interest includes magnetic plasma tornadoes cause by conflict between the sun's radiation and mercury's magnetic field. Mercury is also the fastest moving planet in the solar system, so you can become the person who traveled the fastest in history. Mercury holds the solar system's 17th largest mountain, Caloris Montes, and a huge crater called Caloris Basin. Mercury also has a tail that is not visible to the eye, but consists of tiny subatomic particles blown out by the sun. Those are only some reasons, but mercury can be a fairly nice place to visit.++++I don't think anyone would want to visit Mercury in person, even if physically possible. Travel time apart, it is the nearest planet to the Sun, so extremely hot. It is studied by satellites controlled from Earth, instead.No-one is likely to want to visit Mercury because it is far too hot, but astronomers do want to study the planet for scientific knowledge, so would use sensors on remotely-controlled satellites put into orbit around it.
Mars because it would be the next easiest to inhabit, terraformed or not. The rest in the this solar system are to harsh to make it worth while. And beyond this solar system it too far for humans to travel at present.
The iron deposits in which the needle is attracted to is located mainly in the far North American Land Mass, and because a needle is attracted to iron, that is where it will point. If iron deposits were all located in the South, then the compass would point that way. Iron deposits are in the North, so that is why it only points north. A compass uses a magnetic field, and iron is the best metal for magnets and iron is easily attracted to other magnets, the compass faces the deposits. If the magnetic field of the Earth suddenly changed, and this DOES happen naturally every 250,000 years or so, the consequences would be fascinating. For life, we can see from the fossil record that the past field changes had no significant effect on living organisms. This is most curious because the field reversal ( North magnetic pole shifting to antarctica and the South magnetic pole shifting to the arctic region in the Northern Hemisphere) one might expect the field to go to zero strength for a century or so. This would let cosmic rays freely penetrate to the Earth's surface and cause mutations. This seems not to have had much effect in the past, so we probably don't really know what is going on during these field reversals. There have been a dozen of them over the last few million years, documented in the rock which has emerged and solidified along the mid-Atlantic Ridge where continental plates are slowly separating. These epochs form parallel bands all long the ridge where the rock has stored a fossilized image of the local orientation of the Earth's magnetic field for the last few million years. Magnetic field wandering would let the aurora borealis occur at any latitude, but other than that there would be no noticeable effects other than changes in the amount of cosmic rays that penetrate to the ground. Even this effect is minimal because we can visit the Arctic and Antarctic and only receive a slight increase in cosmic rays. So long as the strength of the field remains high during this field wandering event, the effects should be pretty benign. The Earth's magnetic field is believed to be generated by the rotation of the Earth's molten iron-nickel core. The period of field reversal is determined by the rotation rate of the core and its electrical conductivity. If you were to change either one of these, the field orientation, strength and '250,000 year cycle' would be increased or decreased. We also know from studies of the Sun's magnetic dynamo, that this phenomenon can change abruptly as it did during the 'Little Ice Age' on the Earth a few hundred years ago. There were no sunspots observed on the Sun for 50 years or so, then rather abruptly, the familiar 11-year cycle started-up over the course of a few decades. A similar 'chaotic' phenomenon may occur with the Earth 'suddenly' loosing its magnetic field for a few million years. Already, geophysicists have begun to notice a decline in the strength of the Earth's magnetic field, suggesting that the next field reversal epoch may be about to start. It may, however, take a long time to get here, and we don't really know if the decline is just a natural, ripple, or the portend of something far more sinister.
The planet you are referring to is likely Neptune, as it is the coldest planet in our solar system with an average temperature of about -353°F (-214°C). Any visit to Neptune would require a very warm coat to withstand the extreme cold temperatures.
Your question needs clarification -- what planet
A magnetic field is a area in which magnetic objects are pushed or pulled. It is caused by the alignment of parts of atoms.A field of force associated with changing electric fields , as when electric charges are in motion. Magnetic fields exert deflective forces on moving electric charges. Most magnets have magnetic fields as a result of the spinning motion of the electrons orbiting the atoms of which they are composed; electromagnets create such fields from electric current moving through coils. Large objects, such as the earth, other planets, and stars, also produce magnetic fields. See Note at magnetism.
The duration of Visit to a Small Planet is 1.42 hours.
Visit to a Small Planet was created on 1960-02-04.
to see if theirs life
There are many reasons you may want to visit Mercury. For one, the gravity is about 1/3 of that on Earth, so you can have the same low gravity effect as on the moon. Some phenomena that occurs on Mercury that may be of interest includes magnetic plasma tornadoes cause by conflict between the sun's radiation and mercury's magnetic field. Mercury is also the fastest moving planet in the solar system, so you can become the person who traveled the fastest in history. Mercury holds the solar system's 17th largest mountain, Caloris Montes, and a huge crater called Caloris Basin. Mercury also has a tail that is not visible to the eye, but consists of tiny subatomic particles blown out by the sun. Those are only some reasons, but mercury can be a fairly nice place to visit.++++I don't think anyone would want to visit Mercury in person, even if physically possible. Travel time apart, it is the nearest planet to the Sun, so extremely hot. It is studied by satellites controlled from Earth, instead.No-one is likely to want to visit Mercury because it is far too hot, but astronomers do want to study the planet for scientific knowledge, so would use sensors on remotely-controlled satellites put into orbit around it.
Mars because it would be the next easiest to inhabit, terraformed or not. The rest in the this solar system are to harsh to make it worth while. And beyond this solar system it too far for humans to travel at present.
To see how many stars and moons are in the planet
Mars.
Probably because it is the closest planet to Earth
We are adapted to breathing and living in Earth's atmosphere. A planet would need to have an atmosphere similar to that of Earth for people to find it livable.
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