Moons of Mars | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-03-26

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Moons_of_Mars


00:01:17 1 History
00:01:26 1.1 Early speculation
00:04:41 1.2 Discovery
00:08:41 1.3 Mars moon hoax
00:09:32 1.4 Recent surveys
00:10:20 2 Characteristics
00:12:49 2.1 Orbital details
00:12:59 3 Origin
00:16:08 4 Exploration
00:18:45 5 Gallery
00:18:55 6 See also



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SUMMARY
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The two moons of Mars are Phobos and Deimos. Both were discovered by Asaph Hall in August 1877 and are named after the Greek mythological twin characters Phobos (panic/fear) and Deimos (terror/dread) who accompanied their father Ares into battle. Ares, god of war, was known to the Romans as Mars.
Compared to the Earth's moon, Phobos and Deimos are small. Phobos has a diameter of 22.2 km (13.8 mi) and a mass of 1.08×1016 kg, while these measures for Deimos are 12.6 km (7.8 mi) and 2.0×1015 kg. Phobos orbits closer to Mars, with a semi-major axis of 9,377 km (5,827 mi) and an orbital period of 7.66 hours; Deimos's semi-major axis is 23,460 km (14,580 mi) with an orbital period of 30.35 hours.