The fast-moving gas cloud could help explain the so-called missing satellite problem, if the object is what scientists think ...

Clathrates are characterized by a complex cage structure that provides space for guest ions too. Now a team has investigated the suitability of clathrates as catalysts for electrolytic hydrogen ...

Most cells in the human body each contain about six feet of DNA. Yet the nucleus, where DNA is coiled, is no larger than a ...

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short ...