We take it for granted that gravity acts to keep us on the ground and to keep Earth in orbit around the sun.
But if we look at the atoms that make up our bodies, and at the smaller particles that make up those atoms, there's a mystery.
Already a subscriber? Log in
Read the full story and more at $9.90/month
Get exclusive reports and insights with more than 500 subscriber-only articles every month
ST One Digital
$9.90/month
No contract
ST app access on 1 mobile device
Unlock these benefits
All subscriber-only content on ST app and straitstimes.com
Easy access any time via ST app on 1 mobile device
E-paper with 2-week archive so you won't miss out on content that matters to you
