Rail News

ACES Ground Terminal to Test Theory of Relativity

Image courtesy of Airbus Defence and Space

Airbus Defence and Space has supplied the first ACES Ground Terminal to the German National Metrology Institute (Physikalisch Technische Bundesanstalt, PTB) in Braunschweig (Germany).

Testing the Theory of Relativity

The international scientific community is preparing to challenge what we think we know about time and space. The aim of the the Atomic Clock Ensemble in Space (ACES), designed by Airbus Defence and Space for the European Space Agency ESA, is to conduct a rigorous test test of Einsteins theory of relativity.

Ground Terminals

Airbus Defence and Space will supply nine Ground Terminals required to compare their ultra-accurate atomic clocks with the ACES “super clock”, which will orbit Earth on the International Space Station. The ISS appears over the horizon throughout the day, allowing the Ground Terminals to autonomously track it and compare the ACES clock ensemble to the ground atomic clocks.

Related Post:  Fahma Orders 27 Hydrogen Fuel Cell Trains from Alstom

The first Ground Terminal is ready for installation at PTB in Braunschweig (Germany). This is the first of comparable units installed in France, the UK, Japan, and the USA.

Fundamental Constants

The clock, which loses only one second every 300 million years, ACES will help scientists conduct research into fascinating phenomena such as relativistic time shifts and drifts of the fundamental constants defining the Universe. The undertaking will begin following the launch of the ACES clock ensemble in the Spring of 2017.

Tags in this story

News categories

    19 Jul 2019
    Alstom to Supply Train Control and Traction Systems to Nanjing Metro
    19 Jul 2019
    Network Rail Investments: New Trains and New Services
    18 Jul 2019
    BART Trains Get Bike Straps Encouraging Active Travel
    18 Jul 2019
    First Upgraded Class 175 DMU Back in Service for TfW
    18 Jul 2019
    Hungarian Railways Gets Its First Stadler KISS
    17 Jul 2019
    Unipart Joint Venture Wins Five-Year Contract Extension
    17 Jul 2019
    Track Maintenance & Construction: Still in Search of It’s Place in the 4.0 World
    17 Jul 2019
    Czech Republic: RegioJet Announces Increase in Passengers
    Subscribe
    Subscribe to Railway-News
    Get the latest contract alerts and Railway News emailed directly to your inbox.

    We respect your privacy and take protecting it seriously.

    Please tick to confirm you would like to receive emails we think may be of interest to you. We sometimes tailor the content you see to what we think you'll find interesting, and so monitor your interaction with our website and email content (find out more).