The orbit’s lookout

in:100

ESOC, centre d’opérations de l’ESA

Place
Darmstadt, Germany
Official site
esa.int
Themes
Company visit, City
Listed in
in:100
Groups
Yes, guided tours for groups
Capacity
Up to 20 people per tour
Open
Mondays, Wednesdays and Fridays, 90-minute slots; closed on public holidays
Indicative price
€120 per group (German, English), €140 (other language)

Source: the venue’s website, checked on 01/11/2026.

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In Darmstadt, ESA’s European Space Operations Centre was inaugurated on 8 September 1967, with 95 staff. Its control rooms fly the Agency’s missions, and its Space Debris Office tracks, object by object, what is cluttering Earth’s orbit.

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The orbit’s lookout

The office issues collision warnings and predicts re-entries. Its 2025 report counts about 40,000 tracked objects in orbit, of which 11,000 are active satellites, and estimates more than 1.2 million debris objects larger than one centimetre, enough to destroy a satellite. In the control room, a team sees how engineers coordinate decisions that commit missions lasting years, facing a risk shared by every operator.

The guided tour lasts 90 minutes: a short film, then the Main Control Room, the Rosetta engineering model and mission control rooms. A group of up to 20 books it through Darmstadt Marketing, €120 in German or English, €140 in another language, on Mondays, Wednesdays or Fridays, from age 10. The list of participants is due five working days ahead.

Photo credits : European Space Agency (Wikimedia Commons, CC BY-SA 3.0 IGO)

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