- Don Lincoln says romantic notions of manned spaceflight shouldn't obscure the fact that most exploration can be done more cheaply and more safely by robots
- Lincoln: Putting people into space is far costlier and riskier; we should wait for the right missions down the line
Don Lincoln is a senior physicist at Fermilab and does research using the Large Hadron Collider. He has written numerous books, including "The Large Hadron Collider: The Extraordinary Story of the Higgs Boson and Other Things That Will Blow Your Mind," and produces a series of science education videos. In collaboration with the Great Courses company, he recently released a video course about the theory of everything. Follow him on Facebook. The opinions expressed in this commentary are his.
(CNN)In the last several weeks, two events demanded the attention of space enthusiasts. On March 30, entrepreneur Elon Musk's Space X company successfully reused a previously flown rocket to launch a communication satellite into space. And on April 6, American space pioneer John Glenn was laid to rest.