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Special Report

Exploring the Red Planet

As NASA prepares to launch its new Curiosity Mars rover, we look back at some of the highlights--and the misfires--in more than 50 years of Mars missions

  • November 3, 2011

What Would Happen If Earth and Mars Switched Places?

Last Saturday, at a workshop organized by the Foundation Questions Institute, Nobel laureate physicist Gerard 't Hooft gave a few informal remarks on the deep nature of reality.

June 9, 2011 — George Musser
Room for Debate: Where, If Anywhere, Is NASA Headed?

Room for Debate: Where, If Anywhere, Is NASA Headed?

Without a firm destination, will NASA's ambitions for a return to manned spaceflight beyond Earth orbit founder? Or, will scrapping the Constellation Program give the U.S. more options for human exploration of the moon, Mars and the asteroids?

March 19, 2010 — John Matson

Opportunity Knocks at Martian Crater

Seven years into its three-month mission, the Mars rover Opportunity reaches Endeavour Crater, a possible geologic treasure trove. John Matson reports

August 16, 2011


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