According to NASA’s official orbital data,The Voyager 1 probe will cross a very symbolic and extremely interesting distance threshold later this year: 1 light day.Everyone knows about light years. A light day is the distance that light travels in 24 hours.About 25.9 billion kilometers, equivalent to more than 160 astronomical units, and of course light hours, light minutes, light seconds, etc.
Such a span takes only one day, but it took humans more than 49 years. It has been almost half a century since the launch of Voyager 1 on September 5, 1977.
Of course, Voyager 1 had no original plan to fly so far. It was intended to see Jupiter, Saturn, their moons, and rings.
It flew by Jupiter in March 1979 and Saturn in November 1980. It was supposed to be a rest after that, but miracles kept happening.
On February 17, 1998, it surpassed Pioneer 10 and became the farthest man-made object from Earth at that time.
On August 25, 2012, it passed through the heliopause and became the first human object to leave the solar wind and enter interstellar space.
But what is desperate is that Voyager 1 has not yet flown out of the solar system, because according to the sun's gravitational range, it has to pass through the Oort cloud.
At the current rate, it will take Voyager 1 about 300 years to reach the inner edge of the Oort cloud, and it will take about another 30,000 years to pass through it, and then it will be completely out of the solar system.
However, as the energy is gradually exhausted, the instruments on it have been shut down, and it may not be long before it will completely lose contact with humans.
With the continuous advancement of human space technology, it is believed that Voyager 1 will not be the first to reach the Oort cloud.
The famous "Faint Blue Dot": Earth taken by Voyager 1 from 6 billion kilometers away on February 14, 1990