China to launch asteroid probe, calls for partners

China plans to launch an ambitious asteroid exploration mission and has invited collaborators to put their experiments on the probes, space agency officials said Thursday.

How much contamination is OK on Mars 2020 rover?

When the Mars 2020 rover arrives on the Red Planet, one of its primary mission goals will be to select and preserve samples that would eventually make it back to Earth for scientific study. Rather than seeking to eliminate ...