Heart murmur. Heart murmurs are heart sounds produced when blood flows across one of the heart valves that are loud enough to be heard with a stethoscope. There are two types of murmurs. A functional murmur or physiologic murmur is a heart murmur that is primarily due to physiologic conditions outside the heart. Other types of murmurs are due to structural defects in the heart itself.
Voyager 2 passed Neptune in the summer of 1989, the first spacecraft to observe that planet. Passing about 3,000 miles above Neptune's north pole, Voyager 2 made its closest approach to any planet since it left Earth 12 years earlier.
also flew by various of Jupiter's moons; intentionally flown into Jupiter at end of mission; first spacecraft to orbit Jupiter; first spacecraft to flyby an asteroid: 1989-084B Galileo Probe: NASA/ DLR: 7 December 1995: atmospheric probe: success: first probe to enter Jupiter's atmosphere: 1989-084E: Cassini: NASA/ ESA/ ASI: December 2000: flyby: success