The basalt found in Duluth's abandoned quarry shared properties with a sample brought to Earth on Apollo 11, so researchers ground down the basalt into the very first lunar simulant
Jenna Kowaleski column: Let's make safer roads — for you and me duluthnewstribune.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from duluthnewstribune.com Daily Mail and Mail on Sunday newspapers.