Halley (cometa)

The video discusses the Munhaley comet, named after a British scientist, which has a short orbit period and is visible every 76 years. Its next appearance is expected in 2061. During its last approach to the sun, it was observed by space probes from the United States, the Soviet Union, and Japan, providing the first close-up view of a comet.

Which countries sent space probes to approach the comet Munhaley?

What significant information did the space probes provide about the comet Munhaley?