UCL Department of Space and Climate Physics


About the Department

UCL's Mullard Space Science Laboratory is the UK's largest university space research group. We aim to unravel the mysteries of space through research in fields ranging from the Earth's climate to the most distant galaxies in the known Universe, using innovative space instruments.

MSSL is UCL's Department of Space and Climate Physics. UCL was one of the first universities in the world to become involved in making scientific observations in space. Since MSSL was established in 1966, we have participated in over 35 satellite missions and over 200 rocket experiments.

The laboratory is located in a Victorian mansion set in 30 acres of land in the Surrey Hills, 35 miles from London, with spectacular views across the Surrey and Sussex countryside. Here we have the unique capability of designing, building and testing instruments and other spacecraft systems on site. Seven research groups supported by specialist engineers conduct our scientific research. Staff also teach space-related courses at UCL.

University College London
Department of Space and Climate Physics
Mullard Space Science Laboratory
Holmbury St. Mary
Surrey RH5 6NT
United Kingdom

+44 (0)1483 204100

+44 (0)1483  278312


How to find us:
MSSL is situated in the Surrey countryside, in the centre of the Guildford/Dorking/Horsham 'triangle'. The nearest train station is Gomshall, however there are limited onward transport links from there.  

Working on the OSO-1 prototype at MSSL


Explore our heritage through history the beginnings, directors and archives of MSSL.

MSSL covered in Mullard Newsletter, May 1965


Published quarterly and including brief descriptions of activities and news from MSSL.

MSSL Award winners 2018

MSSL Awards

Every autumn, MSSL recognises the outstanding achievements of its staff and students. Award, named in memory of past members of staff, are given in the categories recognising outstanding work by students, post-docs, engineers and those in outreach.

institute of Physics Project Juno Practioner

Equality & Diversity

At MSSL, we are committed to providing a safe and enjoyable working and studying environment for all.


MSSL Brochure:

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General Enquiries:

MSSL office
+44 (0)1483 204100