The Grand Tour was resurrected as Mariner-Jupiter-Saturn 1977, or MJS '77. In March 1977, just months before the launch of both spacecraft, the mission was renamed Voyager.

Launched in 1977, the Voyager probes embarked on a journey unlike any in human history. Over four decades later, they continue to send data from interstellar space, offering insight into the outer ...

You may know your way around the night sky, but you've likely never pulled off anything like this. Italian astronomer Gianluca Masi, the founder and scientific director of the online Virtual ...

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Comprising Hubble’s annual “grand tour of the outer Solar System”—and part of the Outer Planets Atmospheres Legacy program (OPAL)—here are its stunning images in all of their glory (below): ...

Voyager 1’s trajectory past Saturn ultimately flung it out of the ecliptic plane where all the planets reside. ... Once it did, NASA gave the go-ahead for Voyager 2’s “Grand Tour.” ...

Voyager’s Grand Tour: A cosmic alignment. Once every 175 years, a cosmic alignment occurs. The four outermost planets, Jupiter, Saturn, Uranus, and Neptune, become accessible to spacecraft from ...

The Voyager spacecraft have flown by and photographed the outer giant planets and one of them has entered into interstellar space. But these iconic missions almost never left Earth.

The two-planet addition became the Grand Tour. The projected lifetimes stretched to 12 years for the Neptune encounter August 24, 1989. And that date would, in turn, become early history.

The tally of extrasolar planets is currentlyabout 240, a number that ticks over faster than Mario Andretti's odometer. Of allthe stars studied, roughly 5?10% are found to have planets.