UNIVERSE
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It gave spacecraft a timed trajectory.
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It ensured spacecraft would return home safely.
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It was helpful in planning spacecraft trajectories.
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It ensured spacecraft would avoid being pulled into the Sun.
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Detailed explanation-1: -The “gravity assist” flyby technique can add or subtract momentum to increase or decrease the energy of a spacecraft’s orbit.
Detailed explanation-2: -A gravity assist around a planet changes a spacecraft’s velocity (relative to the Sun) by entering and leaving the gravitational sphere of influence of a planet. The spacecraft’s speed increases as it approaches the planet and decreases as it leaves the planet.
Detailed explanation-3: -Gravity assists take place when a spacecraft flies past a planet or large moon. This allows the planet’s gravity to pull on the spacecraft and change its orbit. Sometimes the spacecraft speeds up, sometimes it slows down-depending on whether it passes behind or in front of the planet.
Detailed explanation-4: -Without gravity, the satellite’s inertia would carry it off into space. Even with gravity, if the intended satellite goes too fast, it will eventually fly away. On the other hand, if the satellite goes too slowly, gravity will pull it back to Earth.
Detailed explanation-5: -Gravitational slingshots is the use of the relative movement and gravity of a planet or other celestial body to alter the path and speed of spacecraft. Using gravity assists is typically used to save fuel, time, and expensive as it can be used to either accelerate or decelerate a spacecraft.
Detailed explanation-6: -From Cassini’s launch through the mission’s Grand Finale, “gravity assists” were essential to making the spacecraft go where the scientists wanted it to go. This propellant-saving, mission-enabling technique has been used in solar system exploration since the early 1970s.