Europa’s “wall-demon” scar resembles lake stars on Earth, prompting researchers to investigate whether it indicates pockets of water beneath the moon’s frozen surface ...

You can tune in to see live views of the Geminid meteor shower as it peaks overnight on Dec. 13-14, thanks to a free ...

Its last close encounter was in mid-September, the closest one yet, passing just 3.8 million miles from the solar surface. It passed through the boundary between outer space and the region where the ...