News

Metsähovi Radio Observatory renovation is complete

The renovation of Finland's only radio observatory is an investment into national astronomical research.
Metsähovin radiotutkimusaseman uudisosa kuva: Joni Tammi
Metsähovi Radio Observatory in January 2021. Image: Joni Tammi / Aalto University

The extensive renovation of Aalto University's Metsähovi Radio Observatory, which took more than a year, is now complete. The oldest part of the observatory, built in the 1970s, was dismantled. An extension part, which was built in the 1990s, was renovated, and a completely new wing was built in connection with it. The new facilities include a room for meetings and seminars, workspaces, a kitchen, social facilities, and laboratory facilities.

In the renovation, building service technology was upgraded, and energy efficiency was significantly improved: for example, oil heating was replaced by environmentally friendly geothermal heating, more energy efficient windows were installed, ventilation was upgraded, and heat recovery was introduced.

‘We are eagerly waiting to continue our research work and teaching, and to receive guests in our upgraded facilities’, says Metsähovi Director Joni Tammi.

The Metsähovi Radio Observatory monitors, for example, radiation emanating from the sun and from black holes on every day of the year, and the renovation period was no exception.

‘Our technical team succeeded in ensuring that the equipment and observations also worked during the renovation, even though this required special arrangements of many kinds’, says laboratory engineer Juha Kallunki. For example, radio silence, which is in force over the entire area, was challenging for the contractors, because radio transmitters can be found in almost all types of construction machines nowadays.

Major investment into national astronomical research

Aalto University has invested heavily in the upgrading of Finland's only astronomical radio observatory and its research equipment in recent years. In a major operation last summer, the radar dome of Metsähovi's main research instrument, a 14-metre radio telescope, was replaced.

‘This is an indication that Aalto University also wants to invest in basic scientific research. The upgrades ensure that our activities and radio astronomy research in Finland can continue far into the future’, Joni Tammi says.

Read more

Changing the Aalto University's Metsähovi radio observatory radome. Photo: Kalle Kataila

Like a massive golf ball - Metsähovi Radio Observatory got a new radome

The Metsähovi Radio Observatory's landmark protects the telescope and enables year-round study of the Sun and black holes.

News
Ilmakuva Metsähovin radiotutkimusasemasta, kuva: Mikko Raskinen

The lure of cosmic mysteries

Astronomer Joni Tammi wants to uncover the secrets of the universe; secrets that have so far managed to elude us. However, with new advances in technology, the next major space discoveries are just around the corner.

Give for the future
Metsähovi Radio Telescope

Metsähovi Radio Observatory

Metsähovi Radio Observatory is the only astronomical radio observatory in Finland. Metsähovi’s main instrument is the 14-metre radio telescope, which is used around the clock, every day of the year. Its observational data is used, e.g., for studying active galaxies, the Sun, and the rotation of the Earth.

  • Updated:
  • Published:
Share
URL copied!

Read more news

#53 ranking of most international universities by Times Higher Education 2026.
University Published:

Aalto University ranks 53rd globally for international outlook

Aalto is the most international university in Finland and ranks second in the Nordic countries
Two persons holding doctor's hats
Cooperation, Studies, University Published:

Thinking of doing a doctorate? Join us on 21 April

Join us on 21 April 2026 to hear firsthand experiences from researchers across Europe and explore what a career in research at Aalto could look like.


Two people making a presentation in front of school pupils. A screen shows investment strategies with piggy bank images.
Cooperation, University Published:

Aalto University Junior brings lessons on saving and investing to schools with the support of OP Uusimaa

With the support of donations from OP Uusimaa, Aalto University Junior has developed the Juniorpörssi learning platform, which is used in Invest in Your Future workshops delivered to lower secondary and upper secondary schools. The activities have now also been expanded to include Money Moments workshops organised in primary schools.
Attendees networking at Demo Day
Campus, University Published:

Demo Day breaks records in 2026: Inside Otaniemi’s fastest growing startup showcase

Hosted by Aalto Startup Center and A Grid, Demo Day brought together nearly 800 visitors, 90 startup booths, and over 75 investors. What began as a grassroots gathering in 2018 has grown into one of Finland’s most vibrant startup showcases.