Pioneer 11’s First Look at Saturn
On September 1, 1979, a small spacecraft flew past a giant planet surrounded by rings. It was Pioneer 11, and it was the first spacecraft ever to visit Saturn. Its brief encounter gave scientists a closer look at a world they had previously studied from far away.
Pioneer 11 was a NASA spacecraft launched in 1973. Its journey took it first to Jupiter, the largest planet in our solar system. In 1974, the spacecraft passed close to Jupiter and used the planet’s gravity to change its path. This maneuver, called a gravity assist, sent Pioneer 11 toward Saturn without requiring it to carry enough fuel to make the whole turn on its own.
Unlike a spacecraft designed to stay at a planet, Pioneer 11 made a flyby. It traveled past Saturn, gathered information during the encounter, and then continued into space. A flyby gives a spacecraft a limited time to make observations, but it can still collect valuable information along its route.
As Pioneer 11 approached Saturn, its instruments studied the planet, its rings, and the space around it. The spacecraft came within about 13,000 miles of Saturn’s cloud tops. That may sound far away, but it was close compared with the enormous distance between Saturn and Earth.
- maneuver:
- A planned movement or change in direction.
- instruments:
- Tools used to observe or measure things.
- detected:
- Discovered or noticed using the senses or equipment.
- particles:
- Very small pieces of matter.
- environment:
- The conditions and surroundings in a place.
- observations:
- Information gathered by watching or measuring.
- orbit:
- The path one object follows as it circles another.
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Preview questions from this passageShowHide
- 1How did Jupiter help Pioneer 11 reach Saturn?
- 2Why did Pioneer 11 have only a limited time to study Saturn?
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About this explanatory article passage for Upper Elementary
“Pioneer 11’s First Look at Saturn” is a explanatory article reading passage about Saturn exploration, written for Upper Elementary. It takes about 3 minutes to read (460 words) and comes with an interactive quiz and a printable worksheet with comprehension questions and an answer key.