Mercury has the fastest orbital period of just 88 days – in one Earth year Mercury completes more than four orbits around the Sun. It also has the greatest temperature variations of all the planets: -173 °C during the night and 427 °C during the daytime: a whopping 600 °C temperature difference between day and night!
Which planet has the largest temperature difference between day and night?
Venus. Mercury has the largest day-night temperature difference.
What planet is very hot in daytime and very cold at night?
It is very hot during the day (over 400°C) because Mercury is so close to the Sun. At night it is very cold because Mercury loses almost all its heat since there is almost no atmosphere to keep the warmth there.
Which planet is very hot even at night?
The carbon dioxide traps most of the heat from the Sun. The cloud layers also act as a blanket. The result is a “runaway greenhouse effect” that has caused the planet’s temperature to soar to 465°C, hot enough to melt lead. This means that Venus is even hotter than Mercury.
Which planet has the highest daytime surface temperature?
Planetary surface temperatures tend to get colder the farther a planet is from the Sun. Venus is the exception, as its proximity to the Sun and dense atmosphere make it our solar system’s hottest planet.
What planet is known as Earth’s twin?
Venus is Earth’s evil twin — and space agencies can no longer resist its pull. Once a water-rich Eden, the hellish planet could reveal how to find habitable worlds around distant stars.
What are the 15 planets?
Planets in Our Solar System
- Mercury. Mercury—the smallest planet in our solar system and closest to the Sun—is only slightly larger than Earth’s Moon. …
- Venus. Venus spins slowly in the opposite direction from most planets. …
- Earth. …
- Mars. …
- Jupiter. …
- Saturn. …
- Uranus. …
- Neptune.
Is Venus hot or cold?
The average temperature on Venus is 864 degrees Fahrenheit (462 degrees Celsius). Temperature changes slightly traveling through the atmosphere, growing cooler farther away from the surface. Lead would melt on the surface of the planet, where the temperature is around 872 F (467 C).
What is the slowest planet?
Venus, which is floating higher each evening in twilight, low in the west, is the slowest-spinning body in the known universe.
What planet is closest to the sun?
The smallest planet in our solar system and nearest to the Sun, Mercury is only slightly larger than Earth’s Moon.
How close is Venus to Earth today?
The distance of Venus from Earth is currently 257,825,833 kilometers, equivalent to 1.723459 Astronomical Units. Light takes 14 minutes and 20.0144 seconds to travel from Venus and arrive to us.
Why did Venus become so hot?
Venus is so hot because it is surrounded by a very thick atmosphere which is about 100 times more massive than our atmosphere here on Earth. As sunlight passes through the atmosphere, it heats up the surface of Venus. The heat becomes trapped and builds up to extremely high temperatures. …
What is the hottest thing in the universe?
The hottest object in the Universe, literally speaking, is the Big Bang. If we go back in time, the Universe gets denser and hotter without a limit. The Big Bang singularity marks the breakdown of Einstein’s theory of gravity, where the density and temperature of matter and radiation diverge to infinite values.
What is the temperature on every planet?
Surface temperatures of the inner rocky planets
| Mercury | – 275 °F (- 170°C) | + 840 °F (+ 449°C) |
| Venus | + 870 °F (+ 465°C) | + 870 °F (+ 465°C) |
| Earth | – 129 °F (- 89°C) | + 136 °F (+ 58°C) |
| Moon | – 280 °F (- 173°C) | + 260 °F (+ 127°C) |
| Mars | – 195 °F (- 125°C) | + 70 °F (+ 20°C) |
What is the hottest and coldest planet?
Shakeel Anwar
| Name of Planets (Hottest to Coldest) | Mean Temperature (Degree Celsius) |
|---|---|
| 1. Venus | 464 |
| 2. Mercury | 167 |
| 3. Earth | 15 |
| 4. Mars | -65 |
Why is Venus called Earth’s sister?
Venus is a terrestrial planet and is sometimes called Earth’s “sister planet” because of their similar size, mass, proximity to the Sun, and bulk composition. It is radically different from Earth in other respects.