Explanation

• Mars is known as the Red Planet due to its reddish appearance.
• Its surface contains iron oxide (rust) which gives it a red color.
• It is the 4th planet from the Sun in the solar system.
• Mars has two small moons: Phobos and Deimos.
• Mars is often called the “planet of future exploration”.

Last updated by NA on 05-11-2026

Explanation

• The average distance from the Earth to the Sun is approximately 150 million kilometers.
• It is also called 1 astronomical unit (or AU).

Last updated by NA on 04-11-2026

Explanation

• A planet must orbit the Sun, have enough gravity to become nearly round, and clear most other objects from its orbital neighbourhood.
• In 2006, the International Astronomical Union (IAU) reclassified Pluto as a dwarf planet.

Additional information:

• The eight recognized planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Last verified on 21-10-2026

Explanation

• Earth is called the Blue Planet.
• About 71% of Earth's surface is covered by water.
• Water makes Earth appear blue from space.
• Earth is the third planet from the Sun.
• Earth’s natural satellite is the Moon

Last updated: NA on 26-09-2026

Explanation

• Venus is the brightest planet in the night sky.
• Due to its thick cloud cover that reflects sunlight strongly.
• It is often called the “Evening Star” or “Morning Star.”

Additional information:

• Distance from Sun: ~108 million km
• Diameter: 12,104 km
• Orbital Period: 225 Earth days
• Atmosphere: Thick CO₂ clouds, very reflective

Last verified on 15-01-2026

Explanation

• Jupiter has the shortest rotation period of all eight planets in the Solar System.
• It completes one rotation in approximately 9 hours and 56 minutes.

Additional information:

• Fastest rotation: Jupiter
• Earth's rotation: Approximately 24 hours
• Mars's rotation: Approximately 24 hours 37 minutes

Last verified on 12-10-2026

Explanation

• Saturn is the second-largest planet in the solar system.
• Ganymede (Moon of Jupiter) is the largest satellite in the solar system.

Planets and Natural Satellites:

1. Mercury: 0
2. Venus: 0
3. Earth: 1 (Moon)
4. Mars: 2 (Deimos, Phobos)
5. Jupiter: 95
6. Saturn: 274
7. Uranus: 27

Last verified on 02-05-2026

Explanation

• The Moon is Earth’s only natural satellite.
• Diameter – 3,474 km
• Distance from Earth – 384,400 km
• Orbital period – 27.3 days
• Surface gravity – 1/6th of Earth
• First human landing – Apollo 11, 1969

Last verified on 18-03-2026

Explanation

• Mercury is the smallest planet in our solar system.
• Mercury with a diameter of 4,879 km (3031.67 mi).
• Its escape velocity is approximately 4.25 km/s.
• Nearest Planet to Sun.
• Fastest Planet.

Last verified on 23-06-2026

Explanation

• Jupiter has the fastest rotation of all planets.
• It completing one rotation in about 9 hours 56 minutes.

Additional information:

• Venus has the slowest rotation.
• It taking about 243 Earth days.
• Earth: ~24 hours
• Mars: ~24 hours 37 minutes.

Last verified on 06-10-2026