{"webUser":null}

The John Batchelor Show / Guest: Bob Zimmerman. Scientists link Enceladus to Saturn's aurora; radar data suggests a lava tube exists on Venus, and archives reveal Pluto retains an atmosphere despite its distance from the sun.

View our embed guidelines

Sorry, your browser isn't supported.

We recommend upgrading to the latest Chrome, Firefox, Safari, or Edge.

You can visit our support center if you're having problems.