why is the Earth unique in the solar system?
94003
The earth is at an optimal distance from the sun, wherein it has the right temperature to foster life. Unlike other planets, it is neither too hot nor too cold. This way, it is the only planet in the solar system that has life. Therefore, the earth is unique. Hope that answers your question. Happy asking!
562236
Its earth and venus...the reason behind it is due to their some what similar size, mass of planet, rotation and revolution time and gases in some cases. hope so u satisfied with my answer.
53346
The solar system always works.
40872
The planet? The most well known feature on the planet is the Caloris Basin. A massive asteriod crashed into Mercury 4 billion years ago (more or less) creating a massive region similar to the Mare (the dark parts) on the Moon.\n\nThe Caloris impact was so powerful that the shock waves traveled through the planet and came together at the point opposite the Basin. This place is all jumbled up with what is called "weird terrain."\n\nOh, and while it used to be thought that Mercury was tidally locked to the sun (the same side always faces the Sun) it turns out that it isn't. Mercury rotates exactly one and a half times during each revolution around the sun. That is, one Mercury year is made up of 1.5 Mercury days. Sometime in the future, several hundred millions years or so, Mercury will be tidally locked.
1182373
a solar system includes the sun, planets & their moons,meteors ,debris, comets  etc. the sun(star) due to gravitational force attracts the planets & other things & it might lead to development of centripital force b/w the sun & the planets.\nthis forms the solar system
779820
The answer is (e).  The Earth is differentiated because the surface materials average a density of about 2.38, while the Earth's overall density is 5.52.  The only way this could be is for the Earth to have denser materials inside than on the surface, meaning it is differentiated.
998637
My favourtie planet is Jupiter because it's the largest and yet made up of a lot of gas. I actually like it because of its moons. The 4 main moons are really cool. It's one moon, Io, is the most active object in our solar system. Also, because it's soo close to Jupiter, as it rotates around it fluctuates thus making it's shape change. The other cool moon, Europa is covered in a thin layer of ice and it is believed to have H2O water underneath that ice which would make it the only other place than earth in our Solar System to have H2O. Ganymede and Callisto are two really cool moons to look at.
34634
Something much more powerful than humans. You could call it God, a higher Source, the higher light, etc. The reasons WHY earth was made vary. I think it was made as sort of a school for souls to come here and learn valuable lessons, learn, then when they die go back home.
728086
earth is obviously created "naturally", in my opinion, there is no such thing as god, rather, earth was created coincidentally.\n\nwhen the solar system is formed, little bits of the sun is trapped by its own gravity, because they were fluid, they formed spheres, this explains why planets are round and not triangular. earth was one of them, it was once small and in habitable, it is only by chance an asteroid nearly the size of earth than collided and fused with earth, readjusting its orbit, size and atmosphere, this also provided the optimal conditions for simple organisms to form out of chemical reactions between chemicals found in the sea together with other natural phenomena like lightnings.\n\ngod had no hand in this, rather, god was created by man
1134630
yep...our earth does have a diverse environment!
814071
Scientists are interested in mars because it is the most earth-like planet in the solar system.It has mountains and valleys,polar ice caps,and dry river beds.Scientists are particularly keen to discern whether water,a key ingredient for life,exists or existed in the past on Mars.
844326
The Solar System or solar system[1] comprises the Sun and the retinue of celestial objects gravitationally bound to it: the eight planets, their 162 known moons,[2] three currently identified dwarf planets and their four known moons, and thousands of small bodies. This last category includes asteroids, meteoroids, comets, and interplanetary dust.\n\nThe principal component of the Solar System is the Sun or Sol (astronomical symbol ); a main sequence G2 star that contains 99.86% of the system's known mass and dominates it gravitationally.[3] The Sun's large mass gives it an interior density high enough to sustain nuclear fusion, releasing enormous amounts of energy, most of which is radiated into space in the form of electromagnetic radiation including visible light. Jupiter and Saturn are the Sun's two largest orbiting bodiesand account for more than 90% of the system's remaining mass. (The currently hypothetical Oort cloud would also hold a substantial percentage were its existence confirmed).[4]\n\nIn broad terms, the charted regions of the Solar System consist of the Sun, four rocky bodies close to it called the terrestrial planets, an inner belt of rocky asteroids, four gas giant planets and an outer belt of small icy bodies known as the Kuiper belt. In order of their distances from the Sun, the planets are Mercury (), Venus (), Earth (), Mars (), Jupiter (), Saturn (), Uranus (), and Neptune (). All planets but two are in turn orbited by natural satellites (usually termed "moons" after Earth's Moon) and every planet past the asteroid belt is encircled by planetary rings of dust and other particles. The planets other than Earth are named after gods and goddesses from Greco-Roman mythology.\n\nFrom 1930 to 2006, Pluto (), the largest known Kuiper belt object, was considered the Solar System's ninth planet. However, in 2006 the International Astronomical Union (IAU) created an official definition of the term "planet".[5] Under this definition, Pluto is reclassified as a dwarf planet, and there are eight planets in the Solar System. In addition to Pluto, the IAU currently recognizes two other dwarf planets: Ceres (), the largest object in the asteroid belt, and Eris, which lies beyond the Kuiper belt in a region called the scattered disc. Of the known dwarf planets, only Ceres has no moons.\n\nFor many years, the Solar System was the only known example of planets in orbit around a star. The discovery in recent years of many extrasolar planets has led to the term "solar system" being applied generically to all the newly discovered systems. Technically, however, it should strictly refer to Earth's system only, as the word "solar" is derived from the Sun's Latin name, Sol. Other such systems are usually referred to by the names of their parent star: "the Alpha Centauri system" or "the 51 Pegasi system".\n\nhttp://en.wikipedia.org/wiki/Solar_system
953692
The Planets  \nCompare and contrast the planets in terms of. Size relative to the Earth ... structure may be similar to Earth because of similar density, mass, and diameter. ...www.gpc.edu/~pgore/Earth&Space/GPS/planets.html \nPlanet - Wikipedia  \nBody of considerable mass that orbits a star and that doesn't produce energy through nuclear fusion. Offers an introduction to the planets of our solar system, ...en.wikipedia.org/wiki/Planets \nplanet: Definition and Much More from Answers.com  \n... and other planets occupy a variety of relative ... See also astronomical objects and the solar system's list of objects, sorted by radius or mass. ...www.answers.com/topic/planet
1094922
The Earth is continually rotating on its axis.\n\nIn short, the Earth rotates because it has to in order to help conserve angular momentum in the universe.\n\nThere is a physical Law which states that angular momentum must always be conserved.\n\nThe big ball of gas and debris which out solar system was formed from had some value for its angular momentum (even if that value was zero).  When the sun and the planets formed from that material, in order to conserve the angular momentum, the planets and sun started rotating.  If you add up all the angular momentum there is now between all the planets/the sun, moons/.... it should come out to be the same value as the angular momentum of the material which formed out solar system.
66192
It is due to the slight orbital eccentricity of Earth rotation around the Sun. Since the orbit is not perfectly circular the distance between the two bodies varies.
921384
Water is a necessity for life and that is based on temperature more so than which planet you are from the sun, it could be the tenth planet from the sun as long as the temperature is similar to ours here. \nBut with so many galaxies and suns in the universe I'm sure somewhere there is another world much like our own.\n\nHeres something you might like it shows everything that we are able to see in the universe and zooms down to our solar system.\n\nhttp://www.atlasoftheuniverse.com/universe.html
634670
It has to do with the formation of the planets from the solar nebula based on the "nebular hypothesis."  That is why they are all on different orbits.