“We Are on Mars Again. It’s a Great Day.”

Precisely on time and target, NASA’s Curiosity rover touched down safely on Mars Monday to begin an ambitious two-year trek through a mountainous crater that promises to reveal whether the red planet was ever hospitable to life.

Almost immediately upon landing early Monday, the Curiosity craft transmitted to Earth a series of photographs showing its own wheels safely on the surface of Gale Crater near the equator of Mars.

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About Voices

Along with original content and posts from across the Dow Jones network, this section of AllThingsD includes Must-Reads From Other Web Sites — pieces we’ve read, discussions we’ve followed, stuff we like. Six posts from external sites are included here each weekday, but we only run the headlines. We link to the original sites for the rest. These posts are explicitly labeled, so it’s clear that the content comes from other Web sites, and for clarity’s sake, all outside posts run against a pink background.

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Voices is edited by Beth Callaghan.