NASA's Ingenuity helicopter took off for its 72nd and final flight on Mars.
The Perseverance rover successfully landed on Mars.
NASA announced that they found running water on Mars.
NASA's Mars Odyssey completed its 60,000th orbit around Mars.
The Indian Space Research Organization's Mars Orbiter Mission probe reached Mars' orbit after 298 days.
NASA's MAVEN space probe was launched from the Cape Canaveral Air Force Station.
Water-bearing minerals were discovered on Mars by NASA's Curiosity Rover.
Earth-like calcium-rich deposits were found on Mars by NASA's Curiosity Rover.
NASA's Curiosity rover landed on Mars' Aeolis Palus plain.
NASA launched the Mars Science Laboratory probe, which carried the Curiosity Rover to Mars.
NASA declared the conclusion of the Phoenix mission after contact was lost with the Phoenix lander.
NASA launched the Phoenix spaceship from the Cape Canaveral Air Force Station, Florida, US.
After seven months of travel, the Mars Reconnaissance Orbiter arrived safely to Mars.
NASA celebrated April Fool's Day by telling the world that they found water on Mars.
Mars made its closest approach to Earth in nearly 60,000 years.
NASA's Opportunity Mars rover launched from the Florida Cape Canaveral Space Force Station.
NASA launched the 2001 Mars Odyssey space probe from Cape Canaveral.
A conjunction of Sun, Mercury, Venus, Mars, Jupiter, Saturn, and the Moon occurred.
NASA lost radio contact with the Mars Polar Lander moments before the spacecraft entered the Martian atmosphere.
The Mars Polar Lander was launched.
NASA's Pathfinder Space probe landed on Mars.
A team of NASA scientists declared that the Martian ALH 84001 meteorite might contain traces of alien life.
NASA lost contact with the Mars Observer spacecraft.
NASA launched the Mars Observer, a space probe designed to study Mars' geology and climate.
The Viking 2 became the second spacecraft to land on Mars.
The famous Face on Mars photo is taken.
Viking I lands on Mars.
America's robot spacecraft, the Viking I, successfully landed on Mars.
NASA launched the Viking 1 planetary probe toward Mars.
The USSR launched the Mars 7 spacecraft from the Baikonur Cosmodrome in modern-day Kazakhstan.
Mariner IX took two photos of Mars' north pole.
The mapping of Mars' surface began.
NASA's Mariner 9 became the first spacecraft to orbit another planet when it entered Mars' orbit.
The US Mariner 9 was launched – it went on to become the first satellite to orbit Mars.
NASA launched its Mariner 7 space probe from Cape Canaveral atop an Atlas-Centaur rocket.
NASA launched the Mariner 4 space probe on a mission to Mars.
Mars had a 'close encounter' with Earth at 34.8 million miles apart.
Asaph Hall discovered Mars' second moon, called Phobos.
One of Mars' moons, 'Deimos,' was discovered by an American astronomer, Asaph Hall.
Saturn, Jupiter, and Mars came into alignment. Medieval scholars believed this phenomenon brought forth the Black Death.
