Explanation

One day on Venus (one full rotation) takes about 243 Earth days.

Venus takes about 225 Earth days to orbit the Sun, making a day on Venus longer than its year.

So, 1 day on Venus ≈ 1 year on Earth (approximately).

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:

• Mercury: 0
• Venus: 0
• Earth: 1 (Moon)
• Mars: 2 (Deimos, Phobos)
• Jupiter: 95
• Saturn: 274
• Uranus: 27

Explanation

Order of Planets from the Sun (by distance):

• 1st: Mercury
• 2nd: Venus
• 3rd: Earth
• 4th: Mars

Explanation

Terrestrial planets are rocky planets, including Earth, Mars, Venus, and Mercury.

These planets have solid, rocky surfaces.

Unlike gas giants which are composed mainly of gases.

Explanation

Celestial bodies that do not have their own heat and light are known as planets. Planets are lit by the light of stars, such as our sun.

Stars: Celestial bodies that emit their own light.

Asteroids: Tiny bodies that move around the sun, found between the orbits of Mars and Jupiter.

Comets: Bodies in space that are seen by reflected light.

Explanation

The lithosphere is the rocky outer part of the Earth.

It is made up of the brittle crust and the top part of the upper mantle.

The lithosphere is the coolest and most rigid part of the Earth.

Explanation

Explanation

Kepler's law explains the motions of planets in the solar system.

Kepler's Laws of Planetary Motion

They describe how:

(1) planets move in elliptical orbits with the Sun as a focus

(2) a planet covers the same area of space in the same amount of time no matter where it is in its orbit

(3) a planet's orbital period is proportional to the size of its orbit (its semi-major axis).

Explanation

The Viking program consisted of a pair of identical American space probes, Viking 1 and Viking 2, which landed on Mars in 1976.

Explanation

• the planet that moves around the Sun at the largest speed is Mercury
• ***
• Mercury is the fastest planet, which speeds around the sun at 47.87 km/s.
• In miles per hour, this equates to a whopping 107,082 miles per hour.