Because Mercury has little atmosphere, it lacks weather like as storms, clouds, winds, and rain. Its surface temperature may reach 801 degrees Fahrenheit during the day (because to its proximity to the sun) and -279 degrees Fahrenheit at night (because there is no atmosphere to trap the daytime heat).
However, due to gravitational effects from Jupiter and Venus, small atmospheric waves called trojans have been detected on Mercury. These waves move across the face of the planet at about 50 miles per hour.
Also, there are two large volcanoes on Mercury that eject lava into the solar system for hundreds of miles around. One of these volcanoes is 3,000 feet high and was once active before becoming dormant millions of years ago. The other volcano is double the size of the first one and also remains active today!
These are just some of the things that happen on Mercury; this planet is very dynamic. It is smaller than Earth but many times more massive, so it should come as no surprise that it moves faster too - 47 miles per hour in orbit around the Sun. This is twice as fast as Earth's rotation.
It is estimated that there is water under the surface of Mercury. This is based on observations of seismic activity and the presence of oxygen in the atmosphere. However, because mercury does not have a magnetic field like Earth's it blocks out radio signals which makes conducting scientific experiments on the planet difficult.
The temperature is 800 degrees Fahrenheit. Mercury's temperatures are quite high. During the day, surface temperatures can approach 800 degrees Fahrenheit (430 degrees Celsius). Because there is no atmosphere to keep the heat in, nighttime temperatures on the planet's surface can reach minus 290 degrees Fahrenheit (minus 180 degrees Celsius).
All things considered, it is a very warm planet!
However, even though it is the closest planet to the Sun, its year is still only 87 days. This means that there is enough daylight all the time for Mercury to experience seasonal changes. The north and south poles are also constantly frozen over because they are surrounded by ice caps. The rest of the planet is burned by solar radiation most of the time, but with clouds blocking out much of the sun's energy.
Most planets are too far from their stars to have any kind of climate at all, but because of its location right next door to the Sun, we know that Mercury has been affected by sunlight throughout history. It has seasons, and scientists think that it was probably not as cold as today when the first humans arrived here about 4.5 billion years ago.
Mercury's temperature ranges from 750 degrees Fahrenheit during the day to -300 degrees Fahrenheit at night due to the lack of an atmosphere. When it gets to be sunlight, the ice cover melts. Originally Answered: Why is there no cloud cover on Mercury? Because mercury does not contain water. Clouds are composed up of (typically) gaseous water. Without water, there can be no clouds.
However, if you look closer, you will see lots of small craters all over the planet. These are evidence that there was once a lot of water on Mercury, but now everything is cold and frozen again.
The Sun heats up Mercury to very high temperatures. Some parts of the planet may get as hot as 750 degrees F (400 degrees C), while others may drop down to -300 degrees F (-180 degrees C). This is because it takes place over a wide area instead of in one big spot like on Earth. There is also very little air so nothing can escape the heat. The only thing keeping Mercury from melting completely is its distance from the Sun.
At some times, the sun's rays are just right to melt some part of Mercury's surface. Then, water vapor and other gases would be released into space through these fissures. The effects would then spread out across the planet like ripples in a pond when the wind blows against it! This is why you sometimes see bands of light and dark areas on Mercury's surface.
Mercury's dark side is that it is extremely cold since it has practically no atmosphere to hold in heat and keep the surface warm. Temperatures can fall below -300 degrees Fahrenheit. The bases of several craters near Mercury's poles are never illuminated by sunlight. These areas must be far colder than the more heavily cratered regions that are always visible from Earth.
The Sun lights up every square inch of Mercury, but there are many dark spots where temperatures may drop to below -400 degrees F. It is these cold regions that most people imagine when they think about Mercury because they have heard about its extreme temperature differences. However, the majority of Mercury is much warmer than this.
It's difficult for us to understand how cold and dead the core of Mercury might be since it is such a vital part of any planet's structure. Even though Venus and Mars also have very thin atmospheres, they aren't as cold as Mercury because they have larger surface areas that allow more heat to be lost into space.
Perhaps the most interesting thing about Mercury is not what we know about its physical properties but what we don't know. There are many mysteries surrounding this planet that continue to drive scientists to study it further. For example, almost all the water on Earth was probably delivered by meteorites, but we will never know if Mercury was similarly watered during its formation or if it developed its own reservoir of water underground.