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Phobos was discovered by astronomer Asaph Hall, Sr., on August 18, 1877.

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When were the 2 moons of mars discovered?

Phobos was discovered on August 18, 1877, and Deimos was discovered on August 12, 1877, meaning that both were discovered within a week.


Who discover the two moons of mars phobos and deimos?

Asaph Hall in 1877 discovered them and call them Phobos & Deimos.


When was Deimos and Phobos discovered?

February 31st


When were Deimos and Phobos discovered?

Both satellites were discovered in 1877 by Asaph Hall.


Who discovered Phobos and Deimos or Mars?

Asaph Hall


Who discovered the two moons of Mars?

Aseph Hall in 1877 discovered the Mars' two moons, Phobos and Deimos.


Who discovered the two moons of mars equals Phobos and Deimos?

Billy Mckeand


What are the descriptions for Mars' moons Phobos and Deimos also when were they discovered?

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.


When was Mars moons discovered?

Mars has two moons and they are Phobos and Deimos.They were discovered in 1877 by Asaph Hall.


Does mars have any moons when were they discovered?

Mars has two small known moons called Phobos and Diemos. Both Diemos and Phobos were discovered by astronomer Asaph Hall in August, 1877, at the United States Naval Observatory in Washington, D.C.


Who discovered the two moons of mars s?

Both of Mars's moons, Phobos and Deimos, were discovered by American astronomer Asaph Hall in 1877.


What Mars's mons?

Mar's moons are Phobos and Deimos. They were discovered in 1877 by Asaph Hall. The names came from Greek mythology, Phobos being fear and Deimos terror. Phobos is the larger of the two. The moons are irregularly shaped, and are supposedly captured asteroids. In about 50 million years Phobos will either crash into Mars or break up into a ring structure around the planet.