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Mercury has little or no atmosphere to protect it thermally from the cold of space, nor from the heat of the sun during the day. Although the temperature can reach more than 427 °C (800 °F), this heat is rapidly radiated back into space once the area is out of the sunlight. During the night (88 earth days long), the temperature of the surface falls to -184°C (-300°F).
Gases in Earth's air, including water vapor and carbon dioxide, make a "greenhouse" effect that stops most of the heat from escaping at night. Without some greenhouse effect, Earth would also suffer extremes of temperature. Venus (which orbits between Mercury and Earth) has an atmosphere 90 times as thick as Earth's so its greenhouse effect is substantially more noticeable. The surface of Venus stays around 400 degrees even at night.
Wiki User
∙ 8y ago
Wiki User
∙ 11y agobecause, if your talking about the planet Mercury and not the substance, then the answer is: mercury is hotter during the day because of the sun. the sun heats the planet more in the day than at night. mercury may not always have the time to revolve or the same rotation period that of earths but it definably for has to deal with the sun having a impact being as close as it is. :) hope i answered the question for you :D -Harry Styles lover (cookie)
Wiki User
∙ 7y agoMercury is the hottest planet, because it is the closest planet to the sun.
Wiki User
∙ 11y agoit doesn't have a thick atmosphere to act as an insulator
Wiki User
∙ 6y agoAll planets are relatively hot during the day and cold at night. This is because the Sun radiates heat during the day.
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Why is mercury not hotter then Venus?
Mercury is less hotter than Venus because it has a thin atmosphere and the heat that is attracted during day time goes away at night and the temperature becomes -170 degrees while Venus has a thick atmosphere and does not allow heat to pass.
What is the temperature like on the inner planets?
Mercury: in the day about 700K at night about 100K Venus : All the time about 735K A more interesting question you should be asking yourself right now is: Why is Venus hotter than Mercury when it is further from the sun?
Is it warmer than in inland or than coast?
Land heats fast and cools faster than sea. On hot sunny day, land is hotter. on cold windy night, coast is hotter.
What is the day and night temperature for mercury?
Bloody hot in the day and hot at night
What is Mercury's temperature range for the day and night?
Bloody hot in the day and hot at night
Why is mercury not hotter then Venus?
Mercury is less hotter than Venus because it has a thin atmosphere and the heat that is attracted during day time goes away at night and the temperature becomes -170 degrees while Venus has a thick atmosphere and does not allow heat to pass.
Is Mercury or earth hotter?
When it is night on Mercury, it's colder than earth at any given time,but during the day,obviously,there is no comparison,the earth is much colder. BY THE WAY:this is coming from a 13 year old ;) but one that knows her sh*t.
What is the temperature like on the inner planets?
Mercury: in the day about 700K at night about 100K Venus : All the time about 735K A more interesting question you should be asking yourself right now is: Why is Venus hotter than Mercury when it is further from the sun?
Which is hotter the Moon or Pluto?
Day time on the Moon is hotter than Pluto. Night time on the moon is about as cold as Pluto, sometimes colder.
Is it warmer than in inland or than coast?
Land heats fast and cools faster than sea. On hot sunny day, land is hotter. on cold windy night, coast is hotter.
Which planets are hotter than the Earth?
All eight planets have a surface temperature, though it varies as the planets distance from the sun varies. Closer planets to the sun generally have a higher surface temperature, while further planets have a colder surface temperature.
Where does an echidna stay at night?
They stay in their burrows at night and for the hotter part of the day.
What is the day and night temperature for mercury?
Bloody hot in the day and hot at night
What is Mercury's temperature range for the day and night?
Bloody hot in the day and hot at night
Why mercury's surface temperature varies so much from day to night?
The night side of Mercury is not receiving any direct sunlight. Because Mercury is so close to the sun, the day side of Mercury has a significant increase in heat.
Why does mercury's surface temperature varies so much from day to night?
because mercury is extremely hot during the day and extremely cold at night
Why would you freeze on Mercury?
Mercury has essentially no atmosphere, which means that, while the day is extremely hot, it cannot hold onto that heat at night. Both day and night on Mercury are very long, with a single day-night cycle lasting 176 Earth days.
