![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
People have long wondered if life could have existed or even still exits on Mars. The Viking landers in 1976 searched for signs of life in the red soil, but found no clear-cut evidence. Future missions are planned to search other terrains on Mars, such as areas where water must have flowed in rivers and formed lakes that eventually dried up. But the search has already started. A group of investigators at the Johnson Space Center and Stanford University has revealed evidence from an intense, careful study of a meteorite from Mars that tiny bacteria-like creatures may have lived in cracks in the rock.
In this first issue of PSRD, we describe evidence the researchers have assembled, and present some of the nonbiological alternatives other scientists have proposed. We intend to follow the debate as it unfolds during the coming months or, perhaps, years.
Begin your discovery here. Investigate the type of evidence of most interest to you or simply go through the list in order.
![]() |
|
![]() |
|
![]() |
|
![]() |
![]() |
[ About PSRD |
Archive |
Search |
Subscribe ] [ Glossary | General Resources | Comments | Top of page ] |