'In 1935 Robert Goddard was the first to have a liquid fuel rocket break this "barrier"'
Sound barrier
1930S SCIENCE: In 1935 Robert Goddard was the first to have a liquid fuel rocket break this barrier
In 1935 Robert Goddard was the first to have a liquid fuel rocket break this "barrier"
In 1935 Robert Goddard was the first to have a liquid fuel rocket break this "barrier"
1930S SCIENCE
Sound barrier
1930S SCIENCE