Voyager 1 reaches 100 AU
August 19, 2006 Leave a comment
An Astronomical Unit (AU) is the distance from the earth to the sun (93 million miles).
In 30 years, Voyager 1 has traveled to a distance of 100 AU from the Sun, farther than any other known man-made object; around 9.3 billion miles from our sun.
The spacecraft cannot rely on solar power anymore; it’s too far out. At this distance, our sun appears merely as a bright point of light. The craft is getting power from nuclear power sources, called radioisotope thermoelectric generators, provided by the US Department of Energy.
In the image to the left, Voyager 1 is now at the outer edge of our solar system, in an area called the heliosheath. This is a place where our sun’s light and gravity wanes. It is approaching interstellar space, traveling at about 1 million miles per day.
In 10 years, Voyager could cross into interstellar space.
Read the JPL story: “Voyager 1: ‘The Spacecraft That Could’ Hits New Milestone”.