Hubble telescope’s annual ‘grand tour’ tracks changes in outer solar system

Each year, NASA’s most venerable space telescope photographs the outer planets of the solar system.

And so this autumn, as usual, the Hubble Space Telescope turned to each planet in turn. The tradition allows astronomers to monitor how the atmospheres of these worlds — Jupiter, Saturn, Uranus and Neptune — change over time. But the photos are, of course, also stunning. NASA released images from this year’s “grand tour” on Nov. 18.

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