Remnants of a massive Chinese rocket that was descending uncontrollably back to Earth reentered the atmosphere over the Indian Ocean at roughly 12:45 p.m. ET Saturday, the US Space Command said on Twitter.Remnants of a massive Chinese rocket that was descending uncontrollably back to Earth reentered the atmosphere over the Indian Ocean at roughly 12:45 p.m. ET Saturday, the US Space Command said on Twitter.