A new probe in development known as GIRO represents a low-cost step toward unlocking the secrets of exoplanets, all through the invisible pull of gravity.

Proposed NASA radio probe could use gravity 'lumpiness' to reveal the insides of alien worlds

Source: space
Source Link: https://www.space.com/astronomy/exoplanets/proposed-nasa-radio-probe-could-use-gravity-lumpiness-to-reveal-the-insides-of-alien-worlds