What The Voyager Discovered In Its 25 B Km (15.5 B Miles) Journey
A tiny metal emissary, built in the 1970s, is now over 25 billion kilometers away from Earth, traveling through the vast, silent void of interstellar space. How did we achieve this? And what does it mean to send something so far beyond home? Let’s celebrate Voyager’s milestone on today’s episode!
What does it mean to send a piece of humanity farther than anything has ever gone before? Voyager 1, a spacecraft launched over four decades ago, has traveled an astonishing 25 billion kilometers from Earth. It has left the boundaries of our solar system entirely, becoming humanity’s first interstellar emissary. This isn’t just a milestone in space exploration—it’s a monumental achievement in human history.
Voyager’s journey began on September 5, 1977, when it launched from Cape Canaveral, Florida. It was designed as part of a bold mission, one that scientists and engineers called "The Grand Tour." This once-in-a-lifetime opportunity arose from a rare planetary alignment—one that occurs only once every 176 years. The outer planets—Jupiter, Saturn, Uranus, and Neptune—were positioned in such a way that a single spacecraft could use their gravitational pulls as slingshots to propel itself from one planet to the next.
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Credits: Ron Miller, Mark A. Garlick / MarkGarlick.com ,Elon Musk/SpaceX/ Flickr
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00:00 Intro
0:41 Voyager's journey of 25 billion km
1:40 The mission of Voyager
2:20 It reached Jupiter
2:50 Saturn
3:30 the pale blue dot
5:00 How does it keep going?
6:00 the golden record message
9:10 Io moon
10:13 Europa moon
11:40 Callisto moon
16:48 Titan moon
19:36 Mimas
19.55 Iapetus
22:40 Uranus Magnetic field
23:50 the gread dark spot
26:20 The heliosphere and interstellar space
30:40 What the golden record contains
39.39 the pale blue dot
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