Rovers are only one form of planetary exploration.
JPL continues to investigate a range of groundbreaking technologies as possible future explorers. Some of the following technologies are possible ways to more efficiently and effectively explore space and planetary bodies. Some of these explorers are in development, while others are still just a mere idea. Aerovehicles Aerovehicles include unmanned balloons designed to hover over or land on planetary bodies. Planetary Aerobots Autonomous floating vehicles are being developed to move through atmospheres and study the environments of other worlds from higher vantage points.