The MOST space telescope.

Mission Overview

MOST (Microvariability and Oscillations of Stars) is a Canadian microsatellite. With the size of a suitcase and weighing only 60 kg, it is the world's smallest astronomical satellite. The high-precision telescope on board measures oscillations in the light intensity of stars, yielding information about age and composition of the stars. Moreover, MOST was build to detect extrasolar planets and measure their properties such as size and density. The satellite sends the data to ground stations at the University of British Columbia, the University of Toronto and the University of Vienna.

Contribution of our Institute

The Institute of Astrophysics is the Austrian representative to MOST hosting the Vienna Ground Station. Furthermore, asteroseismology, i.e. measuring pulsations of stars, is one of the major research topics at our Institute.

Involved Personnel

PI (Univ. of British Columbia): J. Matthews

Austrian Project Lead: W. W. Weiss

Project Lead Vienna Ground Station: A. L. Scholtz


Launch date: 30 June 2003


Canadian Space Agency

Ontario Research and Development Challenge Fund

Natural Sciences and Engineering Reseach Council (NSERC)

Ontario Centre for Research in Earth and Space Technology

University of Toronto

University of British Columbia



MOST (Canadian Space Agency)

MOST (University of Toronto)

Homepage of the MOST Vienna Groundstation