Basic Astronomy


Mars has two known moons, Phobos and Deimos. Both of these satellites were discovered by Asaph Hall in 1877.

Phobos is named after Greek mythological characters Phobos which means panic or fear. According to myth Phobos accompanied his father Ares, god of war, into battle. For Romans, Ares was known as Mars.

Scientists believes that both Phobos and Deimos were asteroid in past and they were captured by Mars gravitational field.

Mass (kg)DiameterSemi-major axisOrbital periodAverage moonrise period
10.8×1015(27×21.6×18.8) km9,377 km (5,827 mi)7.66 h11.12 h (0.463 d)

Related Stories

Curiosity rover of NASA discovered life friendly ancient fresh water lake in Mars

NASA reveals plan to send new mars rover in 2020

Curiosity found evidence of ancient river bed in Mars

Curiosity rover successfully landed on Mars

Mars spacecraft of Russia falls in Pacific ocean

This site is © Copyright Basic Astro 2012-2017, All Rights Reserved.