PROCHAIN ÉVÈNEMENT : Soirée Beaujolais samedi 21 novembre

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Home Astronomy

Astronomy

Buthiers Leisure Island Observatory
T510 telescope on Buthiers leisure island
Buthiers Leisure Island Planetarium
Partial solar eclipse of March 29, 2025
Eclipse at the Buthiers observatory2
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Affiche SOLUNE 2026_web
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SOLUNE-2026_Eclipse-partielle
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SOLUNE-2026_Visites

Discover the mysteries of the universe with our "Astronomy" activity, offering access to the only observatory and planetarium open to the public all year round in the Paris region. Dive into the depths of Space and marvel at the celestial splendors. Book now for an unforgettable astronomical experience!

. . . . . . . . . . .

HEAD IN THE STARS" EVENINGS

(RESERVATION ESSENTIAL)

• For groups (by email or through our contact form):

Activities available year-round, during the day or in the evening: Planetarium and/or slide show, water rockets, visual observations and/or observations through telescopes (weather permitting).

• For individuals (Minimum age: 8 years old) (via the green “Book Now” button – ) :

Session from 9:00 p.m. to 11:00 p.m.: Planetarium and/or slide show, visual observations and/or observations through telescopes (weather permitting).

Voir l’AFFICHE : Les vendredis 30 octobre, 27 novembre et 18 décembre 2026.

(Possibility of sleeping on site... See our "mobile homes" and other proposals, in the "Stays / ▼ Particuliers"... Please note the booking deadline!)

. . . . . . . . . . .

 • Tip:WARNING! Never look directly at the sun, even with sunglasses!
Without proper protection, looking directly at the sun can cause serious and irreversible damage!

- - -

  • Actualité : La NASA a lancé fin août 2026 le nouveau télescope spatial Nancy-Grace-Roman.
Cet instrument doit offrir un champ de vision géant pour cartographier le cosmos, chercher la matière noire et potentiellement découvrir des dizaines de milliers d’exoplanètes.

  • Actualité : Des chercheurs ont décrit une planète de la taille de Jupiter (WISPIT 2b) formée dans un disque de poussières seulement 100 000 ans après la naissance de son étoile, montrant que les planètes peuvent naître plus vite que prévu.

. . . . . . . . . . .
◄ Photos : Observatoire et planétarium
◄ Photos : Éclipse partielle de Soleil – 29 mars 2025
(Si vous êtes la petite famille en photo, appelez-nous !o)
◄ Photos : Séjour SOLUNE 2026 – Éclipse totale de Soleil – 12 août 2026 – Mirador del Alto de Mostelares (ESPAGNE)
. . . . . . . . . . .

I reserve

Practical information

Access conditions

Free parking.

Appointment 20h50 in front of the main reception!

Planetarium and observatory within walking distance (10 min)

Rates

18 € per person.

(Minimum age: 8)

Duration

2 hours: from 9:00 pm to 11:00 pm

Activity location

Planetarium and/or observatory.

Appointment 20h50 in front of the main reception!

Opening

Outside school vacations zone C

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

School vacations zone C

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Rules of procedure

Related activities

Hiking

Discover the caves of the Île de Loisirs amidst heather, rocks and pine trees!

Opening

Free access.

Rates

Free of charge.

Orienteering

100 markers, 15 circuits for beginners and experts alike. Fun for all the family!

Opening

Every day

Rates

4€ per menu.

Trail games

You'll be asking a lot of questions, running sometimes, laughing a lot, and wading a bit too... But all as a team.

Opening

Indisponible

Rates

25€ per game.
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  • 73, rue des Roches
    77760 Buthiers
  • Open all year round
  • 01 64 24 12 87
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Buthiers Partners Olympic Games Paris 2024, here live the games
Buthiers partner, Île de France region
Buthiers partner Département de seine et marne
Buthiers Unesco partners, Fontainebleau and Gâtinais Biosphere Reserve
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