Mike Safyan Mike Safyan Director of Launch and Regulatory Affairs All articles
David J. Salt David J. Salt Telespazio VEGA Deutschland GmbH, Darmstadt, Germany All articles
Gro Sandal Gro Sandal University of Bergen, Norway All articles
Thorsten Schmidt Thorsten Schmidt Chef and restaurateur All articles
Daniel Schubert Daniel Schubert German Aerospace Center (DLR), Bremen, Germany All articles
Daniel Scuka Daniel Scuka Senior Editor for Spacecraft Operations, EJRQuartz for European Space Agency. Credit: ESA CC BY-SA IGO 3.0 All articles
John B. Sheldon John B. Sheldon Chairman and President All articles
Viktor A. Shor Viktor A. Shor Leading scientific specialist All articles
Seth Shostak Seth Shostak SETI Institute, Mountain View, California, USA All articles
Karelle Siellez Karelle Siellez Postdoctoral researcher in astrophysics, working at the Center for Relativistic Astrophysics of Georgia Tech Atlanta, GA) and is a member of the LIGO team All articles
Carla Signorini Carla Signorini European Space Agency All articles
Dr Matthew Simon Dr Matthew Simon NASA Langley Research Center, USA All articles
Michael Simpson Michael Simpson Executive Director All articles
Clive Simpson Clive Simpson Managing Editor All articles
Mark Sims Mark Sims Beagle 2 Mission Manager All articles
Mark A. Skinner Mark A. Skinner Boeing Research & Technology, Albuquerque, New Mexico All articles
Adam Smith Adam Smith Security Consultant All articles
Nathan Smith Nathan Smith Ministry of Defence Science & Technology Laboratory, Salisbury, UK All articles
Nick Spall Nick Spall space and science writer All articles
Alan Stern Alan Stern Chief Scientist All articles
Nicole Stott Nicole Stott Artist, Astronaut and SciArt Advocate All articles
Leopold Summerer Leopold Summerer European Space Agency All articles
Kazuto Suzuki Kazuto Suzuki Hokkaido University, Japan All articles
Vladimir N. Sychev Vladimir N. Sychev Laboratory of Biological Life Support Systems, IBMP, Moscow, Russia All articles