Mercury
Mercury’s gravitational force is 0.37.Mercury is the first and closest planet away from the sun. It is also the smallest planet in all our solar system. It’s a bit smaller than earth and is almost the same size as our moon. Mercury once was a big planet but then time after time it shrunk, and now it has wrinkles. It’s really hot that the strongest metal in the world, which is lead, can melt. Its temperatures are 425-450 degrees Celsius. Mercury has no moons.
But, surprisingly , it is not the hottest planet in our solar system. Through all these years only two spacecraft have landed on Mercury and they are called mariner and messenger. Mariner flew by three times during 1944 and 1945, scientists were worried about the sun hurting it so it was watched by HST. Mercury is deeply cratered and very old. It is much denser than the moon. Mercury’s dense iron core is somewhat larger than earth’s iron core.
Until 1962 people before that believed that Mercury’s day was about the same as our year. It takes 88 days to orbit the sun, which is about two thousand and a hundred hours. It was proven to be wrong in the year 1965 by Doppler radar observations. The length of a day is about 60 earth days. And mercury does not experience seasons unlike most other planets do. Mercury rotates in a unique way in our solar system. It rotates three times in every two revolutions. And rotates one every mercurian year. Mercury can appear in Earth’s sky in the morning or the evening sky.
Astronomical Unit
The astronomical unit is the length between the Earth and Sun. This is about 149,597,870.7 km long. The astronomical unit provides a convenient way to carry out any astronomical calculations. It also stated that ...
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...t earth was in 2004 and it’s called Apophis. It destroyed twenty-five percent of life.
Comets are made up of ice and dust. They are known as dirty snowballs because they contain left overs from the forming of stars. About 3,572 comets are known by scientists.
The comets orbit at 50 thousand AU. The reason why comets are farther away from the sun is because the ice that it contains would melt. When comets are close to the sun, some of the ice melts and forms a tail.
A satellite is a machine that orbits a star or a planet. One satellite we know is called earth, because it orbits around the sun. Some satellites orbit other planets, while taking pictures. Some pictures contain black holes, and far away galaxies. And satellites also confirms all our theories and hypothesis. The first satellite that went to space was in October 4, 1957, and was called Sputnik 1.
Asteroids are tiny, airless rocky worlds orbiting around the sun and most of them are too small to be called planets, yet, some asteroids are too big too not to be acknowledged and are known as planetoids or minor planets. The mass asteroids are puny but despite their size, asteroids can be deadly. The earth has been hit by many asteroids in the past and can potentially be hit by some again. That's one reason why scientists study asteroids and find ways to avoid them from hitting us or at least predict if they are coming.
Pluto's rotation period is 6.387 days, the same as its satellite Charon. Although it is common for a satellite to travel in a synchronous orbit with its planet, Pluto is the only planet to rotate synchronously with the orbit of its satellite. Thus being tidally locked, Pluto and Charon continuously face each other as they travel through space.
Mercury has countless uses and is a very important element, “named after the planet Mercury. Mercury's chemical symbol comes from the Greek word hydrargyrum, which means "liquid silver."”(Gagnon). On the periodic table its atomic
Parallax is defined as “any alteration in the relative apparent positions of objects produced by a shift in the position of the observer” (Columbia Electronic Encyclopedia 1). Parallax is commonly used to measure distances between celestial bodies, such as planets and stars. Parallax is measured using angles that are much smaller than a degree. Arcminutes are one sixtieth of a degree and arcseconds are one sixtieth of an arminute. One example of the infinitesimal size of an arcsecond could be the width of a dime from a point of view two kilometers away (“Cool Cosmos”). These units of measurement are used in the parallax formula, or the formula used to calculate distance when given an object’s parallax measurement. The distance given from the parallax formula is in parsecs, which are 3.26 light years or 3.18x10^13 kilometers (“PARALLAX”). The parallax formula can be written as “distance = 1/parallax” (“PARALLAX”).
No other metal better illustrates the diversity of effects caused by different chemical species than does mercury. On the basis of chemical speciation, there are three forms of mercury: elemental, inorganic, and organic compounds.
Pluto is very cold, this is based on the fact that it is the farthest “Planet” away from the sun making it very cold and very dark. It is 375-400 degrees fahrenheit below zero. Being that it is so far away from the earth and sun it is hard to really study Pluto’s physical characteristics but many have agreed that Pluto is covered with Ice because of the low temperature. Some of the observations that scientists have recorded are that it has a tilted orbit and it orbits in an oval instead of a circle.
Mercury the planet was named after hermes the god son of Zeus. When hermes was born he stole cattle from Apollo. Then in the morning Apollo accused Hermes and
Most big asteroids are ball shaped. Smaller asteroids, which are usually broken off of a larger asteroid, come in a lot of different shapes. All asteroids have craters that form when they bump or crash into other asteroids. The older the asteroid, the more times it has been hit and the more craters it has.
Physical properties of the Sun, and other space objects such as planets and galaxies, are determined using scientific and physical laws to study electromagnetic radiation. An object’s mass is determined by investigating its gravitational impact on other objects in space using Newton’s laws of motion and gravity. Diameter is determined by measuring angular size and using geometry to find t...
Comets are made up of four distinct features. The first is the nucleus. The nucleus is made up of frozen gases, mostly water vapor with lesser amounts of carbon dioxide and carbon monoxide, and imbedded in the frozen gases are interplanetary dust and tiny fragments of stony and metallic meteoric material. Some comets, the larger ones, have a nucleus of 10 kilometers (Schweighauser 22).
There are more than 20,000 pieces of debris larger than a softball orbiting the Earth. This debris can travel at speeds up to 17,500 mph. Even a relatively small piece of space debris can damage a satellite or a spacecraft at these speeds. Additionally, there are more than 500,000 pieces...
Astronomical cycles are mainly associated with orbits of a primary body (in this case the Sun) by a satellite (the earth). Astronomical cycles can also refer to the systems specific to a satellite (the spin and tilt of the earth). Astronomical cycle’s specific to earth serve as a reference for our measurement of time and play an important role in the earth’s climate and ecology. Things such as seasons, temperature increase and decrease, and weather cycles are all caused by the astronomical cycles relevant to earth; to be specific, the spin of the earth and the tilt of the earth.
Mercury is the first planet closest to the Sun. It is the smallest planet in the solar system. Mercury rotates three times in two of its years. One of Mercury's days is equal to 176 Earth days because its rotation is very slow. What is weird is that its day is longer than its year. Mercury’s year is about 88 earth days the shortest in the solar system. It has the shortest year because it is closest to the Sun.
There are eight planets in our solar system. The first planet closest to the sun is Mercury. Therefore, Mercury is the hottest planet. Mercury’s surface is cold. However, in the daytime Mercury can get as hot as 840 degrees fahrenheit, which is 450 degrees celsius. During night time the temperature can decrease to 275 degrees fahrenheit, or -170 degrees celsius. Mercury is the smallest planet. Mercury is the quickest planet to move around the sun. Its speed is approximately 112,000 mph along its elliptical orbit. Mercury can move around the sun in 88 days. There are craters in mercury, and scientist believe ice is in the craters.
A satellite is defined as an object that orbits or revolves around another object. In basic terms, this relationship is due to the gravitational pull of the larger object while the smaller one has enough velocity and momentum to circle the larger one (Fitzgerald &Dennis). This is a good definition if one is only speaking of the broad principles of why and how objects attract one another and where in nature this occurs. The billions of stars and planets together make up a vast network of orbiting objects that each can rightfully be called satellites. By studying the way the Universe and Solar System works, scientists have been able to send man made devices into earth's orbit to serve the needs of a technologically developing world.