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NASA and the European Space Agency are developing plans for one of the most ambitious campaigns ever attempted in space: bringing the first samples of Mars material safely back to Earth for detailed study. The diverse set of scientifically curated samples now being collected by NASA’s Mars Perseverance rover could help scientists answer the question of whether ancient life ever arose on the Red Planet.

This reel depicts key events during entry, descent, and landing that will occur when NASA’s Perseverance rover lands on Mars on February 18, 2021. In the span of about seven minutes, the spacecraft slows down from about 12,100 mph (19,500 kph) at the top of the Martian atmosphere to about 2 mph (3 kph) at touchdown in an area called Jezero Crater.

On July 20, 1969, humans walked on another world for the first time in history, achieving the goal that President John F. Kennedy had set in 1961, before Americans had even orbited the Earth. After a landing that included dodging a lunar crater and boulder field just before touchdown, Apollo 11 astronauts Neil Armstrong and Buzz Aldrin explored the area around their lunar landing site for more than two hours.

The Heart of the World: Makkah al-Mukarramah, 1880 .The video covers the evolution/history of Mecca/Makkah (Kaaba) from the years 1880. Makkah has changed drastically over the years; as seen in the video.