NASA made public on 16^th July the partially restored and clearer video showing first human landing on the moon, in commemoration of the 40^th anniversary of US astronauts landing on the moon.  

Neil Armstrong took the lead to step down from spaceship Apollo 11 on 20^th July 1969, and land on the moon, leaving human foot prints on the moon for the first time.   

NASA official at the press conference on the 16^th particularly pointed out some contrasting visual effects of the pre and post restoration of the splendid moment of landing, with the clear version positively showing a refreshingly new look. However, NASA stressed that besides the clarity that has been enhanced, there is no new content added to the clear version of the video.

The introduction revealed, the original version of the lunar landing video shot by the astronauts had already been lost, and NASA tried to search for it without avail; the clear version video therefore did not come from the original video, but was restored from the news broadcast by Columbia Broadcasting System in that year, newsreel from the US National Archives and the video resources received by the NASA at the Australian Video Exchange Centre and so forth. 

According to reports, in the 70s and 80s of the last century, NASA reused some old cassettes while confronted with a period of “video cassettes shortage”, and the video of the first lunar landing might have thus been “erased” during that period.

The portion of the video with clear version made public on that day was completed by a digital company in California. NASA has signed an agreement with the company entailing the company to restore the entire video of Apollo 11 Lunar Landing, and the task is estimated to be completed in September. 

Lunar Landing video at NASA website