The Hottest Planet is NOT Mercury

The Myth: Mercury is closest to the Sun, so it must be the hottest, right?
The Fact: NO.
Venus is the hottest planet in the solar system. Why? Because while Mercury has no atmosphere to hold heat, Venus has a thick atmosphere of CO₂ that creates a runaway Greenhouse Effect.

[Image of Solar System planets]

1. The Inner Planets (Terrestrial)

🌑 MERCURY The Swift Planet

• Smallest planet.
• No Atmosphere (that's why it's not the hottest).
• Fastest revolution around Sun (88 days).

🌕 VENUS Morning & Evening Star

• Hottest Planet (462°C).
• Earth's Twin (similar size/mass).
• Rotates East to West (Opposite to Earth).

🔴 MARS The Red Planet

• Red due to Iron Oxide (Rust).
• Home to Olympus Mons (Tallest volcano in solar system).
• Two Moons: Phobos & Deimos.

🚀 The Asteroid Belt

A massive ring of rocks located between the orbits of MARS and JUPITER. This divides the Inner planets from the Outer planets.

2. The Outer Planets (Gas Giants)

🪐 JUPITER The King

• Largest Planet.
• Has the Great Red Spot (A giant storm).
• Largest Moon: Ganymede.

💍 SATURN The Ringed Planet

• Second largest.
• Can float on water (Density less than water).
• Largest Moon: Titan (Only moon with an atmosphere).

❄️ URANUS The Rolling Planet

• Rotates on its side (98° tilt).
• Appears Greenish-Blue due to Methane.

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Revision Flashcards

Hottest Planet

Which one?

Venus

Due to the Greenhouse Effect of CO2.

Asteroid Belt

Located between?

Mars & Jupiter

It separates terrestrial planets from gas giants.

Olympus Mons

Located where?

Mars

It is the largest volcano in the solar system (3x height of Everest).

Ganymede

Moon of?

Jupiter

It is the largest moon in the entire solar system.

Exam-Style MCQs

Q1. Which planet is known as "Earth's Twin"?

A) Mars

B) Venus

Correct! It has a similar size, mass, and density to Earth.

C) Neptune

Q2. Which planet rotates from East to West (Retrograde)?

A) Earth

B) Jupiter

C) Venus

Correct! Venus and Uranus rotate opposite to most other planets.

Q3. The planet that could theoretically float on water is:

A) Saturn

Correct! Its density is lower than water.

B) Mercury

C) Mars

Part of the CGL Geography Series.