Cosmic

GPS doesn’t work as well inside buildings, underground or underwater. Now engineers in Japan have developed and tested an alternative technology that uses cosmic rays to track movement beneath a building with precision of a few meters.

The movements of the Sun, Moon and stars have long been used to keep track of time, and now engineers from the University of Tokyo have proposed a new way to use the cosmos to precisely track time, using showers of particles from cosmic rays.

Infrared observation by the Spitzer space telescope have allowed astronomers to determine the most accurate and precise estimate to date of the Hubble constant - the rate at which our Universe is expanding.

The eROSITA X-ray telescope will search for black holes and dark matter, and may help explain why the expansion of the universe is accelerating instead of slowing down.