The late writer was a big influence on Tacita Dean . She remembers her friend - and their shared obsession with an artwork in Utah ...

Stone tools unearthed in Ukraine were used by ancient humans 1.4 million years ago, according to new research that dated the tools by analyzing particles inside rock produced by cosmic rays.

A new image from the Hubble Space Telescope captures the spiral galaxy IC 1954, located approximately 45 million light-years from Earth in the constellation Horologium, The Clock.