The outer core of the Earth is primarily composed of molten iron and nickel, and is located between the mantle and the inner core.

Plate tectonics is the process by which tectonic plates, large pieces of Earth's lithosphere, move and interact with each other, resulting in various geological phenomena such as earthquakes, volcanoes, and mountain building.

P-waves, also known as primary waves, are the fastest seismic waves and can travel through both solid and liquid materials. They are compressional waves, meaning they cause particles to move back and forth in the direction of wave propagation.

Volcanism is the process by which magma, molten rock from the Earth's interior, rises to the surface and erupts, forming volcanoes and releasing various gases and materials into the atmosphere.

Mars is often referred to as the 'Red Planet' due to the presence of iron oxide on its surface, which gives it a reddish hue.

Ganymede, a moon of Jupiter, is the largest moon in our solar system and is even larger than the planet Mercury.

Saturn is renowned for its prominent and beautiful rings, which are composed of ice particles and rock fragments.

Cosmology is the branch of astronomy that studies the origin, evolution, and structure of the universe as a whole.

The Viking Program, launched by NASA in the 1970s, was the first successful mission to land a spacecraft on the surface of Mars.

Valles Marineris, located on Mars, is the largest canyon in our solar system, stretching for over 4,000 kilometers in length and reaching depths of up to 7 kilometers.

Saturn is known for its distinctive hexagonal-shaped storm, known as the 'Hexagon', which is a large, long-lived weather pattern that encircles the planet's north pole.

Geomagnetism is the study of the Earth's magnetic field, which is generated by the movement of molten iron in the Earth's outer core.

Occultation is the astronomical phenomenon that occurs when one celestial body passes in front of another, blocking its light and causing it to be temporarily hidden from view.

Olympus Mons, located on Mars, is the largest volcano in our solar system, with a height of over 21 kilometers and a diameter of over 600 kilometers.

The Venera Program, launched by the Soviet Union, was the first successful mission to land a spacecraft on the surface of Venus.