Many people - even before telescopes were invented. Lowell was the astronomer who thought he saw canals.
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Ancient civilizations such as the Babylonians, Egyptians, and Greeks were among the first to observe Mars in the night sky. Over time, astronomers such as Galileo Galilei, Johannes Kepler, and Giovanni Cassini made significant observations of Mars, including its rotation period and surface features. Today, various space missions, such as NASA's Mars rovers and orbiters, continue to study and observe the planet in great detail.
Mars has two moons: Phobos and Deimos.
Kepler was not satisfied with the circle as he found that it did not accurately fit all the observed locations of Mars. He later discovered that Mars's orbit was actually elliptical, not circular, leading to his formulation of the laws of planetary motion.
The ice cap on Mars was discovered by Italian astronomer Giovanni Schiaparelli in the 19th century. He observed the ice cap through his telescope in 1877, and his discovery provided important insights into the polar regions of Mars.
Properties have no executive function, they are observed features. One property of Mars is that it is cold compared to Earth, which is due to its greater distance from the Sun, which warms the planets.
White polar caps. Frozen carbon dioxide and water ice.