Which planet has the widest range in temperatures between the day and night side?

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BlackTom AI · Accepted Answer

Question restatement: Which planet has the widest range in temperatures between the day and night side?

Option 1: Mercury
Mercury experiences extreme temperature swings because it has almost no atmosphere to trap or transfer heat. Its daytime temperatures can climb very high, while its night side becomes extremely cold. This leads to a very large day-night temperature range, and in fact Mercury is known for having the widest range among the planets.

Option 2: Earth's moon
The Moon does show a large temperature range due to its lack of a substantial atmosphere, but among the listed bodies, Mercury actually has a larger day-night difference. The Moon’s range is substantial, but not as extreme as Mercury’s extremes.

Option 3: Venus
Venus has a dense atmosphere that traps heat, producing a very high average surface temperature. However, because of its thick greenhouse effect and slow, yet global heat distribution, the day-night temperature variation is relatively small compared to Mercury. So this option describes a planet with low diurnal temperature range, not the widest.

Option 4: Jupiter
Jupiter is a gas giant with rapid rotation and a deep, dynamic atmosphere. While it has weather and temperature gradients, the concept of a distinct day-night temperature swing like a solid‑bodied planet is not applicable in the same way, and the diurnal range is not characterized as the widest.

Option 5: Earth
Earth does have day-night temperature variation, but its atmosphere and oceans moderate temperatures, resulting in a smaller diurnal range compared with Mercury. Therefore, Earth does not have the widest range.

ASTRON 2140 AU2025 (23428) Quiz 3 - 2025 Nov 3

Which planet has the widest range in temperatures between the day and night side?

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