Rogue Planet Characteristics: Rogue planets are celestial bodies that do not orbit a star. Unlike traditional planets, they travel through space independently, which raises questions about their formation and prevalence in the galaxy.

Implications for Planetary Formation Theories: The discovery of numerous rogue planets suggests that the processes leading to planetary formation are more complex than previously understood. This could imply that planetary systems are not as stable or permanent as once thought.

Techniques Used in Discovery: Astronomers utilized advanced detection methods such as gravitational microlensing to identify these rogue planets. This technique relies on the gravitational field of a star or planet to bend and magnify the light from a background star.

Potential for Habitability: While rogue planets may seem inhospitable due to their isolation from a heat source, some theories propose that they could retain heat through geothermal activity, potentially supporting subterranean life.