1. Test of the equivalence principle for galaxy’s dark matter by lunar laser ranging

   • Mingyue Zhang
   • Jürgen Müller
   • Liliane Biskupek

   Original Article 14 May 2020 Article: 25

   

2. Analytical solution of the Colombo top problem

   • J. Haponiak
   • S. Breiter
   • D. Vokrouhlický

   Original Article Open access 29 April 2020 Article: 24

   

3. Uncertainties in the gravity spherical harmonics coefficients arising from a stochastic polyhedral shape

   • Paolo Panicucci
   • Benjamin Bercovici
   • Keyvan Kanani

   Original Article 22 April 2020 Article: 23

   

4. The geometry of isochrone orbits: from Archimedes’ parabolae to Kepler’s third law

   • Paul Ramond
   • Jérôme Perez

   Original Article 18 April 2020 Article: 22