LightSail 2 Spacecraft Successfully Demonstrates Flight by Light (planetary.org)

Article summary

The Planetary Society's LightSail 2 spacecraft has successfully demonstrated solar sailing, using sunlight to raise its orbit around the Earth. The spacecraft's solar sail, made of aluminized Mylar, has increased its orbital high point by about 2 kilometers in four days. This achievement marks the first time a spacecraft has used solar sailing for propulsion in Earth orbit. The mission aims to advance space science and exploration, and its results will be shared with other organizations to support future space missions.

Main themes

• Solar Sailing
• Space Exploration
• Spacecraft Propulsion
• Citizen-Funded Space Projects
• Space Technology

What commenters say

• Mounting LEDs on a solar sail to propel a spacecraft is not a viable method due to the principles of conservation of momentum.
• Using a fan to blow air into a sail can propel a vehicle, but this principle does not apply in a vacuum.
• Solar sailing is a promising technology for space exploration, but it has limitations and challenges that need to be addressed.
• The concept of using photons to propel a spacecraft is often misunderstood, and it is not a straightforward process.
• Redirecting airflow with a sail is a complex process that involves more than just pushing air molecules.
• The efficiency of a propulsion system is crucial in space exploration, and solar sailing is still an emerging technology.
• The idea of using an LED to propel a spacecraft by bouncing photons off a sail is not feasible due to the low energy output of the LED.