Both satellites were discovered in 1877 by Asaph Hall.
Asaph Hall in 1877 discovered them and call them Phobos & Deimos.
February 31st
Asaph Hall
Mars has two moons: Phobos and Deimos. The names mean "panic" and "terror."
Yes, Phobos is bigger than Deimos. Phobos mass is .00000018 and Deimos mass is .000000024. Phobos is 12X8 (miles) and Deimos is 7X6
Billy Mckeand
Phobos and Deimos are the moons of Mars.
phobos and deimos
The answer for this question is Phobos. Phobos is bigger than Deimos. Phobos and Deimos are the moons on Mars.
Aseph Hall in 1877 discovered the Mars' two moons, Phobos and Deimos.
Mars' moons, Phobos and Diemos, were discovered on August 18, 1877 by Asaph Hall working the telescope at the U. S. Naval Observatory in Washington. What Phobos and Deimos both are is almost certainly captured asteroids, in the view of astronomers today.
The moons Phobos and Deimos revolve around the planet Mars.