Astronomy: The Solar System

List the eight planets of the Solar System in increasing order of their average distance from the Sun.

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

What are the primary compositional differences between Terrestrial and Jovian planets?

Terrestrial planets are small, dense, and composed primarily of silicate rocks and metals, whereas Jovian planets are large, low-density, and composed mostly of hydrogen, helium, and ices.

Which moon is the largest in the solar system and is the only one known to possess its own magnetic field?

Ganymede, a moon of Jupiter.

Where is the Asteroid Belt located within the solar system?

The Asteroid Belt is located in the region between the orbits of Mars and Jupiter.

Which NASA mission was the first to fly by Pluto, providing the first high-resolution images of its surface in 2015?

The New Horizons mission.

Identify the only dwarf planet located in the inner solar system, specifically within the Asteroid Belt.

Ceres.

Explain Kepler's Second Law (The Law of Equal Areas) and its implication for a planet's orbital speed.

Kepler's Second Law states that a line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time; this implies that a planet moves faster when it is closer to the Sun (perihelion) and slower when further away (aphelion).

Why is Venus's surface temperature significantly higher than Mercury's, despite being further from the Sun?

Venus has an extremely dense atmosphere composed of 96% carbon dioxide, which creates a runaway greenhouse effect that traps solar thermal energy.

What is the process of planetary differentiation, and what does it reveal about a planet's history?

Differentiation is the process where denser materials (like iron) sink to the center and lighter materials (like silicates) rise to the surface; it indicates the planet was once molten.

What is the primary heat source that drives the intense volcanic activity on Jupiter's moon, Io?

Tidal heating caused by the gravitational tug-of-war between Jupiter and the other Galilean moons (Europa and Ganymede).