Nadia Szijjarto
101019833
PHYS 1901
Tuesday November 17, 2015
Professor Maybury
Assignment 2
1. At first glance, the Moon and Mercury have similar surface features yet on closer inspection we find that significant differences exist. Compare and contrast the surfaces of the two bodies and outline their respective geological histories.
The geology of the moon and mercury are very similar due to certain key aspects, but there are also a few qualities that differentiate the two bodies. The Moon has a radius of 1738km in comparison with Mercury, the smallest of the major planets with a radii of 2440km. The average density of the Moon is 3.37 g/cm3 that is consistent with basaltic silicates. Like Earth the Moon has a layered system, consisting of a crust, mantle, and core. From the radius and the mass Mercury has a mean density of 5.4 g/cm3 which implies a dense iron (Fe) core. Just as the Moon consists of an iron core with a softer molten liquid iron outer core. The outer core is believed to extend out as far as 500km. The Moons core only holds 2% of its mass. Since Mercury is low in mass there is less heat stored from formation its core is probably sold rather than liquid. The lunar surface of the Moon is grey and tan, with a low albedo. Albedo is the reflective properties of planets, satellites, and asteroids. Mercury also has a low albedo, which signifies that the
The moon is by far the biggest and most easily recognizable object in earth’s atmosphere that can be perceived by the naked eye on a cloudless night. It is hypothesized that it came into existence nearly 4.5 billion years ago, from residual debris after a planetary body collided with earth. Although, considered the runner-up to the sun as the second brightest object in the sky, its illumination is deceitful, insomuch as the moon is not a source of light, but instead reflects the sun’s illumination from the half of the moon that is in direct alignment with the sun at that time. More readily identified as a satellite of the earth rather than as a planet itself or even a star, it has a diameter a quarter of the size of earth’s size and it
It is believed that only 55% of Mercury has been mapped, however, that 55% has yielded a number of interesting finds, there are three significant geological features on Mercury, these are: smooth plains, intercrater plains and rugged highlands. The smooth plains resemble Lunar Maria, that is, large dark basaltic plains formed by ancient volcanic eruption, found on the Earth’s moon. The Intercrater Plains are impact craters, pocked with a number of smaller craters, which cover 70% of the examined surface. These craters are particularly deep, due to the planets lack of an atmosphere to slow the bodies before impact. The rugged highlands resemble mountainous regions of the Earth; however, there is no evidence of tectonic motions to have caused them. Mercury is made up of predominately iron, its crust is only 500-600km thick and there is evidence of volcanic activity, although it is believed that the planet has been geologically dormant for billions of years.
Mercury, the closest planet to the Sun, is a rocky planet. The heavily cratered planet suggests that meteors or comets were frequent many, many years ago. Mercury's boulder littered surface and pale gray appearance slightly resembles Earth's moon. Like Mars, Mercury is covered in pulverized dust. What Mercury lacks in this, is weather. Muggle probes bring images to us that show no signs of wind, dust storms, or clouds. No rivers have been found on Mercury. Lack of clouds and rivers, (and oceans) suggests that there is no water on the closest planet to the Sun, Mercury. One of Mercury's most famous craters is Caloris basin, which is 1550 km in diameter. Another of Mercury's most famous craters is called Rachmaninoff. Rachmaninoff is 306 km in diameter. These two very large craters were created by astroids impacting the planet in Mercury's early history.
craters. The smaller moons of Saturn, are mostly rock and ice, and are heavily cratered.
When the moon was created scientist had discover that there was similar materials that was the same as the earth, but some of it was a little different. The first reason is the earth has a atmosphere, while the moon has no atmosphere on itself. The second reason is the earth has shorter days than the moon because earth is 24 hours, while the moon is equal to 27 earth days. The third reason is the minimum temperature, the earth temperature is -126 degrees Fahrenheit, which is warmer, the moon temperature is -387 degrees Fahrenheit. This is why the moon and the earth had some differences to each
Mercury is a rocky, gray planet that very closely resembles the Earth’s Moon on the surface. Mercury’s surface is full of craters, boulders, and pulverized dust. Its many craters can be tiny or massive. Mercury is geologically inactive, and has been for an extended amount of time. There is an absence of weather on Mercury, and it does not have an atmosphere. Because it has no atmosphere, it cannot control the variations in temperature from day to night, and the temperatures on the planet can range from 90 Kelvin to 700 Kelvin. There are no signs of clouds, rivers (or any other body of water), or dust storms on Mercury. What we know about Mercury and its surface is from information brought back by Mariner 10 and the Messenger mission in the last few decades.
Mercury's surface is very rocky and covered in boulders and pulverized dust. The surface is also filled with craters. The planet is a grey color. It is the smallest planet but very dense. The surface of Mercury is very similar to the surface of the moon, but Mercury has more smooth plains. On Mercury you will not find any clouds, dust storms, rivers or any other sign of weather. The planets magnetic field keeps any winds away from it. Mercury has a mainly iron rich core. The planet will always be facing the sun on one side, lighting up half of its surface. The side facing the sun is very hot, while the side not facing the sun gets very cold. There is absolutely no sign of anything living on Mercury, and there has not been any for a long time.
Mercury's surface geology is much like the Moon's. Although, Mercury is a much denser planet and has a much larger liquid iron core. Mercury's surface is also covered in lava plains and impact craters. Some of Mercury's craters are also filled with lava from Mercury's interior. Although only 55% percent of Mercury's surface has been mapped by scientists. Craters can be bowl shaped or huge impact craters. The largest crater on Mercury's surface is called the Caloris Basin. There have been about 15 identified impact craters on Mercury's surface. Similar to the Moon's surface, the largest craters have bright rays of material. The reason these are bright is because they have not been as weathered by other impacts. Mercury's poles have a large deposit of ice water on them. That is why Mercury's surface geology is unique.
Mercury is the smallest planet and is closest to the sun. It's a small, rocky planet that resembles the moon superficially. While the pockmarked surface and rugged terrain suggests a turbulent history, Mercury is no longer geologically active and has not been active for a long time. Mercury has a heavy iron-based core that is proportionally larger than that of any other planet, including Earth. Mercury has a much longer "day" than Earth. For every two Mercury-years, there are only three days. If earth rotated as slowly, each day would last about eight months. This really puts into perspective how slowly the small planet rotates. Despite its slow rotation, its magnetic field has become stronger and more dynamic since its first discovery. There has been a significant change in the geological instant of 35 years.
The planet Mercury, named after the Roman God of Thievery, has an incredible grey surface, littered with craters. Whilst it may lack an environment, pulverised dust roams across its massive stretches of grey fields, and rocky cavities form the land of mercury, resulting in a lack of any possibility of life, unfortunately. Images taken from powerful telescopes give the resemblance of this planet to Earth's own moon, through the grey colours and rocky formations. From Muggle Space Probes, we know that there have not been any signs of clouds, dust storms, or any form of a source of water, further connecting it to the moon. The Caloris Basin, the largest crater on the planet, stretches for 1,550 kilometres across Mercury's fields of grey;
Mercury's most prominent feature is its surface geology. It's almost like the moon, with extensive mare-like plains and heavy cratering, showing that the planet has been geologically inactive for billions of years. Craters range in diameter from bowl-shaped cavities to multi-ringed impact basins hundreds of kilometers across. One of the largest crater is the Caloris Basin, with the diameter of 1,550 km. The impact was so powerful that it caused lava eruptions and a concentrated ring over 2 km tall surrounding the basin to form. There are two distinct regions of plains on Mercury. These plains occur between the crater impacts and they bear a strong resemblence to the lunar maria. From the MESSENGER spacecraft, we were able to see that there
The origin of the Moon is, with quite certainty, one of the most bewildering matters that scientist still attempt to uncover. Although there is a certain theory that is currently favoured, Wizard and Muggle Astronomers from throughout the world are aware that this mystery is still not yet fully uncovered.
It is curious discoveries and predictions we make about the contents in our solar system. Mercury’s, the smallest planet, core has been studied and theorized about. When it comes to density and size, “geologists estimate that Mercury's core occupies about 42% of its volume, compared to Earth's 17%.” (https://phys.org/news/2015-08-planet-mercury.html (Links to an external site.)Links to an external site.). The theory most widely assumed is that “was once a larger planet … struck by a planetesimal measuring several thousand km in diameter. This impact could have then stripped away much of the original crust and mantle, leaving behind the core as a major component.” Planetesimals are dust, rock and other space matter: regarding its most impactful
Mercury surface is very similar to the Moon's. The two main differences between the Moon and Mercury's surface are the size
Complex alterations of the lunar surface occur, despite the fact that lunar processes are much less varied and dynamic than those of the Earth. The most important source of lunar surface alteration, at least over the last three billion years, is evidenced by the Moon’s heavily pocked and cratered surface.