Mercury completes one orbit around the Sun (one year in Mercury time) in just 88 Earth days. Mercury is a rocky planet that is sometimes referred to as a terrestrial planet. Mercury, like the Earth's moon, has a solid, cratered surface. The Earth's closest companion, however different they may seem, Mercury is actually quite a distant neighbor with only 24 million km between it and our planet.
Like the Moon, Mercury orbits the Sun every 888 days or so. But because Mercury is so much closer to the Sun than the Moon, it gets hot enough for liquid water to exist on its surface. And unlike the Moon, which ISLATER than the Earth, Mercury ISEARLIER than the Earth by about 7 hours.
Consequently, if you were standing on the surface of Mercury and looked up at the night sky, you would see that the Sun rises on the east coast of the United States while it sets on the west coast of Australia. This is because, like the Earth, Mercury rotates on its axis once per day (although more slowly - it takes 62 days to rotate completely). The part of Mercury facing towards the Sun at any given moment is called the "venus hemisphere". The part opposite it is called the "mars hemisphere". These terms come from the fact that Venus was originally thought to be the living embodiment of love until scientists realized that it is actually more like Mars in nature.
Both Mercury and Earth are inner planets. They both orbit the sun, but their orbital periods are different. Mercury and Earth are both rocky planets made up of land and rock. The Earth's orbital period is 365 days, and it takes twenty-four hours to complete a full day and night cycle. The mercury's orbital period is 58.5 days, and it takes twenty-four hours and forty-eight minutes to complete one rotation as it orbits the sun.
Earth and Mercury have almost the same mass. The only difference between their masses is that Earth weighs about ninety-nine thousand five hundred million tons, while Mercury weighs about three hundred and fifty-three thousand four hundred and seventy-two tons. This means that Earth contains about seven million five hundred thousand tons of matter per cubic mile, while Mercury contains about two hundred and fifty thousand tons per cubic mile.
The density of Earth's surface is about 3,300 kilograms per square meter (10³4 pounds per square foot). The density of water is 1,000 kilograms per cubic meter (34 pounds per cubic foot). So, you can see that Earth is mostly made up of empty space with molecules floating around in it. Most of the time, these molecules are bouncing off each other. But sometimes they collide with another molecule or a particle and change direction. This is why there are so many events happening at once on Earth, but it's still possible to drive across country for hours without seeing anyone or anything interesting.
Because of its close closeness to the Sun, it circles the planet at a high rate. To put it another way, Mercury takes around 88 Earth days to complete a single orbit around the Sun. A single year on Mercury is actually shorter than a single day due to its quick orbital period and sluggish rotational period!
This short year makes Mercury's orbit too elliptical for plants to grow and make more food, so they mostly die. During some parts of their orbit, the people living on Mercury will see many stars because there are no clouds in the sky, but during other parts of their orbit, they will only see a small part of the night sky because of all the solar wind and other particles blowing away from the Sun.
The amount of radiation that reaches the surface is enough to destroy any organic material such as plants or animals. For this reason, most planets outside our own galaxy are expected to be completely barren of life. However, it is possible that under certain conditions, life might be able to develop even on Mars, which is thought to have once been home to microbial organisms trapped in a dried-up lake bed.
Earth's moon has been known to influence tides, and it has been suggested that it may also influence the orbit of Mercury. The effect of the moon on Mercury's orbit is very small though, so it can be ignored for now.
Long Years, Short Days One day on Mercury (the time it takes Mercury to rotate or spin once in relation to the stars) is equivalent to 59 Earth days. Mercury's day-night cycle lasts 175.97 Earth days. It takes Mercury longer than Earth to circle the Sun because it orbits closer to the Sun.
Mercury has very little air to breathe, so there is no place on its surface where humans could live. But we know that it used to be covered by ice and ocean, and scientists think that some of these features may still exist under the planet's crust.
In order to determine how long it takes Mercury to go from winter to summer, you have to know where it comes from season to season. In January, when Mercury is closest to the Sun, it is also most visible in the night sky. By early April, when it has completed two full orbits around the Sun, it has traveled farther from the Sun than it was in January and becomes invisible beyond the Sun's glare. It reappears in the evening sky in September or October, when it is again close to the Sun.
Before NASA launched several spacecraft to study Mercury from deep space, astronomers had only been able to see the planet as it passed in front of stars as a point of light. The first image of Mercury taken by a spacecraft was made on March 2, 1990 by the U.
Mercury's orbital parameters Mercury's oval-shaped orbit is very elliptical, putting it as near to the sun as 29 million miles (47 million km) and as distant as 43 million miles (70 million km). A unusual transit of Mercury occurred in 2016, when the planet crossed the face of the sun. This caused its atmosphere to evaporate, revealing information about its interior.
How does mercury look through a telescope? Very bright indeed! The naked eye star Mercurius is one of the brightest stars in the night sky, but with a large telescope you can see many other objects beside it. Including planets such as Venus and Mars, which share its orbit but who never cross paths at mid-range distances from the Sun. Jupiter is also easy to spot with a telescope, lying over half-way across the sky. It's colour is mainly red, with some white clouds along with several brownish spots.
What is so special about mercury? Well, the first thing you should know is that there are two kinds of bodies in the solar system: planets and satellites. Of these, only planets have atmospheres. Mercury has no surface water or air, but this doesn't make it any less important or interesting than Earth or Mars. It's just different.
The reason why Mercury is so interesting is because it's the closest planet to the Sun.