Two double sonic booms could be heard in Columbus around 9 a.m. as the space shuttle Discovery passed over en route to Florida's Kennedy Space Center
Discovery's first landing attempt was scrubbed, so mission control set a second landing with a deorbit burn at 8:02 a.m. and a landing at 9:08 a.m. EDT.
The shuttle's path homeward bound took it diagonally across the United States from the Northwest to the Southeast, flying over Helena, Montana; Casper, Wyoming; Tulsa, Oklahoma; Little Rock, Arkansas; Montgomery, Alabama, and Columbus.
Those on the ground could hear twin sonic booms about a minute and a half after the shuttle passed, according the NASA online news service Spaceweather.com.
Discovery was set to land at 7:34 a.m. EDT Tuesday, but was waved off. That was the second landing attempt to be postponed.
The shuttle was to land Monday morning, but bad weather in Florida forced NASA to postpone that.