A manhole cover launched into space with a nuclear test is the fastest human-made object. A scientist on Operation Plumbbob told us the unbelievable story. March 3, 2023 Source: A manhole cover launched into space with a nuclear test is the fastest human-made object. A scientist on Operation Plumbbob told us the unbelievable story. Updated: March 3, 2023 at 1:03 am ◀ China is rolling out the red carpet to attract foreign executives New leaders, economy to dominate China’s legislative session ▶
