Wiktionary (0.00 / 0 votes) Rate this definition: fourth estate (Noun). A hypothetical fourth class of civic subjects, or fourth body (in Britain, after the Crown, and the two Houses of Parliament) which governed legislation. fourth estate (Noun). Journalism or journalists considered as a group; the Press.
Confidence votes 32.9K. Voyager 1 Voyager 1 is 8.2 billion kilometers from the Sun. The distance to the Earth varies depending on the time of year so the distance to the Sun is a much more constant measurement. On September 9, 2012, Voyager 1 was 121.836 AU (1.82264Ã1010 km; 1.13254Ã1010 mi) from the Earth and traveling at 17.043 km/s (38,120 mph) (relative to the Sun) and traveling outward at about 3.595 AU per year.
When Voyager 1 blasted off from Earth on September 5, 1977, it was designed to last for five years. Today, the space probe continues to communicate with NASA as it approaches the heliopauseâthe boundary between our solar system and interstellar space. The farthest manmade object from Earth, Voyager 1 may keep exploring space for another 10 or 20 years before its power runs out. Meanwhile, check out these cool facts about the spacecraft and its mission.