zula patrol planets

They have a complex relationship. Sometimes they're allies, but at other times, they have conflicts.

The difference between stars and planets was their nature and composition. A star was a spherical luminous plasma condensed by gravity, like the sun. Stars generate energy through nuclear fusion reactions and radiate the energy into outer space. Planets, on the other hand, were celestial bodies that orbited stars and usually did not emit light. Planets were composed of solid, liquid, and gas, unlike stars, which had high temperatures. Stars were usually more massive than planets because stars could continue to undergo nuclear fusion reactions while planets could not. In addition, stars and planets moved differently. Stars moved on their own while planets moved around them. In short, there were obvious differences between stars and planets in terms of nature, composition, mass, and motion.

Science fiction planets differ from real ones in multiple ways. Firstly, the laws of physics might be bent on these fictional planets. For instance, some might have gravity that behaves in an unusual manner to create more interesting storylines. Secondly, the ecosystems can be completely fabricated. Instead of the real - world ecological balance, science - fiction planets can host creatures and plants that are a product of the author's wildest dreams, and they can be used as a backdrop to explore various themes like survival, exploration, and the encounter of different civilizations.

The eight planets of the Solar System were Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Mercury was the planet closest to the Sun. Its average orbital radius was about 0.4 astronomical units, with a radius of 2440 kilometers. Its mass was 5.5% of Earth's, and its surface gravity was 40% of Earth's. The ratio of its rotation period to its revolution period was 3:2. It orbited the Sun once every 88 Earth days, and it rotated three times every 2.01 revolutions. Its surface temperature could reach 427 degrees Celsius during the day and drop to-173 degrees Celsius at night. It was a terrestrial planet with the largest orbital eccentricity among the eight planets. It was usually only seen in the early morning or dusk. Venus was the second planet in the order of distance from the sun. It had a radius of about 6000 kilometers, a mass of about 85% of the Earth, and an average density of 5200 kilograms per cubic meter. It rotated in the opposite direction of the revolution and had a rotation period of 243 days and a revolution period of 224.7 days. It was the planet closest to the Earth.(Mars is sometimes closer.) The brightness of the night sky is second only to the moon. It is called "Qiming" or "Changgeng." Its orbit is the closest to a circle and has the smallest eccentricity of 0.7%. It is a terrestrial planet with no magnetic field and is enveloped by a thick atmosphere rich in greenhouse gases. The surface temperature is nearly 500 degrees Celsius. Earth was a planet inhabited by humans. It was the third closest to the sun. There was a large amount of liquid water and an atmosphere rich in oxygen on the surface, which could sustain life. There was a satellite with a volume of about 1,080 billion cubic kilometers and a mass of 60 trillion trillion tons. Its axis of rotation was at an angle of 23.5 degrees relative to the vertical direction. It rotated once every 23.93 hours and orbited the sun once every 365.26 days. Mars was Earth's neighbor with a radius of 3400 kilometers and 11% of Earth's mass. Its axis of rotation was at an angle of 25.2 degrees relative to the vertical direction, and it rotated once every 24.63 hours. It had many similar features as Earth, such as satellites, moving sand dunes, sandstorms, and ice caps at the poles.(The Martian ice cap was made of dry ice.) Billions of years ago, there might have been a climate similar to Earth's current environment. However, due to the drop in the temperature of the Martian core, the magnetic field disappeared, causing the liquid water and atmosphere to gradually disappear. Jupiter was the largest planet in the solar system. It had a thick atmosphere and many rings of dust. It had 64 satellites, 1321 times the size of Earth, and 318 times the mass of Earth. It did not have a solid surface, and the clouds looked like colorful ribbons through the telescope. Saturn was the second largest planet in the solar system. It had many huge rings made of rocks and ice. It might have 60 satellites, 763.59 times the size of Earth, and 95 times the mass of Earth. Its axis of rotation was 26.7 degrees from the vertical direction. It rotated around the axis once every 10.66 hours and orbited the sun once every 29.46 Earth years. Uranus was the seventh planet from the Sun. It had an equator diameter of 51118 kilometers and orbited the Sun once every 84 years. The average distance between it and the Sun was 2.87 billion kilometers. It rotated for 17.24 hours and was blue-green and very cold. There were many slender rings of ice and dust. There were at least 22 satellites, and the direction of rotation was different from the direction of revolution. The average temperature of Neptune's cloud layer was-193 ° C to-153 ° C, and the atmospheric pressure was about 1 - 3 Pa. It circled the sun once every 164.8 years, and its brightness was 7.85 degrees. It could only be seen in a telescope. It had a diameter of 49532 kilometers, a volume 57.74 times that of Earth, and a mass 17.1 times that of Earth. It was discovered on September 23, 1846. It had many slender rings and was a blue planet.