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The geological history of Mars follows the physical evolution of Mars as substantiated by observations, indirect and direct measurements, and various inference techniques.
1 cze 2010 · Greenhouse models indicate that it is difficult to raise global temperatures sufficiently to allow widespread precipitation on early Mars with only a CO 2 –H 2 O atmosphere because of Mars' distance from the Sun, the expected low energy output of the Sun, and formation of CO 2 clouds (Kasting 1991).
From an average distance of 142 million miles (228 million kilometers), Mars is 1.5 astronomical units away from the Sun. One astronomical unit (abbreviated as AU), is the distance from the Sun to Earth. From this distance, it takes sunlight 13 minutes to travel from the Sun to Mars.
6 paź 2020 · The computational wizard Jean Meeus figures that from the years 0 to 3000 A.D., Mars will come closest to Earth on September 8, 2729 (55.65 million kilometers or 34.57 million miles) and...
In 1902, Léon Teisserenc de Bort from France and Richard Assmann from Germany, in separate but coordinated publications and following years of observations, published the discovery of an isothermal layer at around 11–14 km (6.8-8.7 mi), which is the base of the lower stratosphere.
About once every two years, at its closest approach (called opposition), Mars passes within about 55 million km of Earth and it is then that we are able to capture pictures of maximum resolution with earth-based telescopes.
1 wrz 2019 · The geological history of Mars has been divided into three main periods, each named after a region of Mars: Noachian, Hesperian, and Amazonian. An earlier, Pre-Noachian, period has also been identified, even though no physical evidence for its existence remains.
