The rover's 26th sample, known as "Silver Mountain," has textures "unlike anything we've seen before," NASA says.

Elon Musk envisions a utopian city on Mars, but is he disclosing all the challenges? From radiation risks to psychological hurdles, discover the hidden obstacles of Martian colonization.

"It is possible that asteroid 2024 YR4 will fade from view before we are able to entirely rule out any chance of impact in ...