Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. After taking spectacular pictures of our Solar System's outer planets, Voyager 1 looked back at six planets to take our Solar System's first family portrait. Here Venus , Earth , Jupiter , Saturn , Uranus , and Neptune , were all visible across the sky. Each, however, was now just a small speck of light , dimmer than many of the stars in the sky. Voyager 1 is only one of four human-made objects to leave our Solar System , the other three being Voyager 2, and Pioneer 10 and Pioneer 11 .
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