On 11 August 1877, American astronomer Asaph Hall made a historic breakthrough by discovering Deimos, one of Mars’ two natural moons. He used the powerful 26-inch refractor telescope at the U.S. Naval Observatory in Washington, D.C. Just six days later, he discovered Phobos, the second Martian moon. Hall named both moons after Phobos and Deimos, the mythological sons of Ares, the Greek god of war. This remarkable achievement transformed our understanding of the Red Planet an

On July 17, 1975, the United States’ Apollo and the Soviet Union’s Soyuz spacecraft successfully docked in Earth orbit. The mission was part of the Apollo–Soyuz Test Project (ASTP), the world’s first international human spaceflight. Launched on July 15, the two spacecraft met in orbit after precise maneuvers. Commanders Thomas P. Stafford and Alexei Leonov shared the first historic handshake in space. The crews spent nearly two days together conducting scientific experiments

On November 28, 1964, the Mariner 4 spacecraft was launched — the first successful mission to fly by Mars. After a 228-day journey, Mariner 4 passed about 9,846 km from Mars and transmitted the first ever close-up photos of the Red Planet back to Earth. The images revealed a cratered, moon-like surface — a discovery that forever changed humanity’s view of Mars and paved the way for all future Mars exploration. #RedPlanetDay #Mars #Mariner4 #SpaceExploration #MarsMission #O