Eventa Coelesti

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  A simple view of our web app

Inspiration

Stargazing has always felt magical, but finding out when and where to look often requires effort and research. I wanted to create something that effortlessly bridges the gap between everyday life and celestial wonder. The idea for Eventa Coelesti came from a desire to help people reconnect with the night sky—using tech to inspire awe.

What it does

Eventa Coelesti is a web application that:

• Detects your geographic location
  
• Displays real-time and upcoming astronomical events visible near you
  
• Sends smart notifications 30 minutes before key events
  
• Shows an animated, live sky map with ISS, planets, moon phases, and stars
  
• Allows filtering events by type (ISS, meteor showers, moon, planets)

How we built it

We used:

• HTML, CSS, JavaScript for the core structure and interactivity
  
• Geolocation API to determine the user's location
  
• Astronomy APIs for real-time event data (and simulated fallbacks)
  
• Canvas & DOM elements for the interactive star map
  
• Notification API to provide timely alerts
  
• Responsive design to ensure a smooth experience across devices
  

Challenges we ran into

• Handling geolocation denials or inaccuracies gracefully
  
• Dealing with incomplete or inconsistent third-party API data
  
• Calculating event times and celestial positions with time zone awareness
  
• Designing an engaging and informative UI without overwhelming the user
  
• Ensuring browser compatibility for notifications and animations
  

Accomplishments that we're proud of

• A fully functional sky-aware web app with dynamic content
  
• A visually appealing and intuitive interface
  
• A real-time sky map that updates based on time and location
  
• Notification system that actually works reliably in most browsers
  
• Smooth filtering and event categorization for a great user experience
  

What we learned

• How to handle geolocation and notification APIs effectively
  
• Managing asynchronous data and fallback strategies
  
• UI/UX principles for displaying scientific data in a user-friendly way
  
• Dealing with time zones and scheduling in JavaScript
  
• Building with resilience in mind when relying on external data sources
  

What's next for Eventa Coelesti

• Integrate solar and lunar eclipses, auroras, and satellite tracking
  
• Add export to calendar (iCal, Google Calendar)
  
• Allow user login and preferences (favorite event types, alert times)
  
• Launch as a Progressive Web App (PWA)
  
• Add multilingual support (English, French, more)
  
• Collaborate with astronomy communities for educational content
  """

Built With

• css
• html5
• ip-api.com-geolocation
• javascript