Solar Sails Chase Down Interstellar Visitors
A fleet of solar sails are set to chase down interstellar visitors such as asteroids and comets to get a close look. When the strangely shaped object, Oumuamua, passed through our system in late 2017, we could only get long-range measurements. No ships were ready to race it down and get a close-up look. Hence, many things about it will forever remain a mystery.