Mars has never looked more like a planet built for hiding secrets. A cluster of eight vast, water-carved caves appears almost engineered to shield fragile chemistry, or even biology, from the brutal ...

Hubble has captured images of space objects that challenge how scientists understand the universe. From bizarre shapes to ...

Early image of interstellar object 3I/ATLAS sparks debate among scientists, fueling speculation on cometary behavior versus ...

If nonliving materials can produce rich, organized mixtures of organic molecules, then the traditional signs we use to ...

New images from NASA 's Hubble Space Telescope have revealed an enormous, oddly shaped disk of gas and dust around a single ...