The Outer Planets: Hubble’s Continuing Legacy

The video discusses the planning and execution of observations of outer planets using the Hubble Space Telescope, focusing on the OPAL project. It highlights the challenges of tracking moving planets and the importance of observing them at opposition for optimal resolution. The OPAL project aims to build a time base of data to study changes in the atmospheres of outer planets like Jupiter, Uranus, and Neptune. Notable findings include Uranus' brightening polar cap and Neptune's dynamic cloud patterns and dark spots. The video emphasizes the small OPAL team's efforts and the public availability of their data for further scientific analysis.

What is the primary reason for choosing the time of opposition for observing outer planets with Hubble?

• It provides the highest resolution view from Earth.

• It is the only time Hubble can observe planets.

• It allows for observing planets during the day.

• It is the time when planets are closest to the Sun.

What was the initial focus of the OPAL project?

• Observing the moons of Jupiter

• Studying the rings of Saturn

• Analyzing the weather patterns on Jupiter

• Tracking the orbits of outer planets

What was a significant observation about Uranus made by the OPAL project?

• Its polar cap is disappearing.

• Its polar cap is getting brighter over time.

• It has no polar cap.

• It has a shrinking polar cap.

What unique feature of Neptune was observed by the OPAL project?

• Bright white clouds at the poles

• A stable atmosphere with no clouds

• A permanent Great Red Spot

• A rapidly changing Great Dark Spot

How does the OPAL project contribute to the scientific community?

• By limiting data access to select scientists

• By focusing only on Mars observations

• By providing immediate public access to its data

• By keeping data exclusive to the OPAL team