Sunday, December 29, 2019
The first ship that will arrive near a star will be Pioneer 10
In the 1970s, NASA sent four unmanned space probes to the solar system: Pioneer 10 and 11, and Voyager 1 and 2. After completing their missions, they continued moving away so that the four are leaving the solar system.
But what will be the first to reach the proximity of another star?
Pioneer 10
Coryn Bailer Jones, of the Max Planck Institute for Astronomy, and Davide Farnocchia, of the Jet Propulsion Laboratory, have estimated that the NASA Pioneer 10 probe will be the first of four probes launched into the solar system in the 1970s in the vicinity of another star.
Specifically, it will pass through the star system called HIP 117795. It is located in the constellation Cassiopeia. Their calculations show that the spacecraft will pass within 0.231 parsecs of the star in approximately 90,000 years.
Using the data collected from the Gaia space telescope, which was launched by the European Space Agency in 2013 and has been parked at a point just outside the Earth's orbit around the Sun, researchers were able to determine when the paths of the four spacecraft they could approach stellar systems far away.
The researchers discovered that the four spacecraft will approach approximately 60 stars over the next million years, and will be found within two parsecs of approximately 10 of them. But they will travel for a long time before they collide or are captured by a star system, of the order of 10 to 20 years.
The Pioneer 10 ship is also famous for the fact that it contains a plaque inscribed with a symbolic message that informs the extraterrestrial civilization that it could intercept the probe about the human being and its place of origin, the Earth, a kind of "message in a bottle "interstellar. This plate was made of gold anodized aluminum, because this element has certain properties that cause it to degrade minimally.
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