Question

What is the world's lightest solid material​

Answer 1

Answer:

$\huge \sf \bf \purple{꧁༺ǟռֆաɛʀ༻꧂}$

Aerogel

It looks like frozen smoke. And it's the lightest solid material on the planet. Aerogel insulates space suits, makes tennis rackets stronger and could be used one day to clean up oil spills.