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In August 1877, the American astronomer Asaph Hall discovered the two moons of Mars using a 660 mm (26 in) telescope at the U.S. Naval Observatory. [55] The names of the two satellites, Phobos and Deimos , were chosen by Hall based upon a suggestion by Henry Madan , a science instructor at Eton College in England.
The History of Mars may be History of Mars observation; Geological history of Mars This page was last edited on 28 ...
The Mars Global Surveyor, active from 1997 to 2006, was the first spacecraft able to image Mars in high enough resolution to detect new impacts, with a resolution of up to 1.5 meters (4.9 ft). The first detected impact, a 14.4-meter (47 ft)-diameter crater in southern Lucus Planum , happened between 27 January 2000, and 19 March 2001. [ 2 ]
The existence of dust devils on Mars was confirmed by analysis of data from the Viking probes in the early 1980s. Photographs from the Viking orbiters revealed tracks across the Martian surface suspected to be caused by dust devils, and data from the landers' meteorological instruments confirmed convective vortices as the cause. [ 2 ]
On May 14, 2021, China became the second country to ever deploy a rover on the Martian surface. Named Zhurong after the ancient Chinese god of fire, the rover landed on Mars’ Utopia Planitia ...
Using cameras fitted on probes orbiting Mars, researchers have observed morning frost forming inside the calderas of the planet’s volcanoes for the first time. Water frost detected on Mars ...
On March 18, 1925, the violent Tri-State tornado occurred, killing 695 people and injuring 2,027 people, while traveling 219 miles (352 km) over a period of 3 hours and 45 minutes. At one point, the tornado was moving with a forward speed of 73 miles per hour (117 km/h), setting the record as the fastest forward moving violent tornado in history.
Mars is the fourth planet from the Sun.The surface of Mars is orange-red because it is covered in iron(III) oxide dust, giving it the nickname "the Red Planet". [22] [23] Mars is among the brightest objects in Earth's sky, and its high-contrast albedo features have made it a common subject for telescope viewing.