Ask your AI assistant what that light was

Add WTH Was That? to Claude, ChatGPT or another AI assistant, then just ask about what you saw. It checks the same data as this site, for your time and place, and answers with links back here.

The address

Copy

No account or sign-in. It only looks things up: it can't post, change or save anything.

Add it

• Claude (web and desktop): Customize, then Connectors, then "Add custom connector". Paste the address and choose Add. The free plan allows one custom connector. On Team and Enterprise plans an owner adds it for everyone under Organization settings, then Connectors.
• ChatGPT: on the Plugins page, choose the plus button, then "Add custom MCP server", paste the address and choose no sign-in. Plans and workspace rules decide whether this is offered.
• Other assistants and tools that support MCP connectors over the web ("Streamable HTTP"): add a server with the address above.

Menus in these apps change from time to time; look for "connectors" or "MCP" in their settings.

What to ask

• "I saw a line of lights moving across the sky over Tampa at 9:40 last night. What was it?"
• "What can I see in the sky tonight from Denver?"
• "Is there a launch I can see from Orlando this week?"
• "When is the next meteor shower, and the next full Moon?"
• "Has anyone reported anything strange near Phoenix lately?"

What it can do

• Explain a sighting: Work out what someone most likely saw in the sky, from when, where and what it looked like.
• What's in the sky tonight: What's worth looking up for tonight from a place: when it gets dark, the space station passes, launches that can be seen, the bright planets after dusk and before dawn, the Moon, meteor showers, the aurora chance, anything predicted to come down, and close pairings of the Moon and planets.
• Upcoming rocket launches: Rocket launches in the next days, worldwide, with the time and pad.
• Recent sightings near a place: Sightings people reported on WTH Was That? near a place (within about 150 km) or worldwide, newest first, each with what it most likely was and a link to its case page.
• Coming sky events: What is coming up in the night sky: meteor shower peaks, solar and lunar eclipses, full Moons and supermoons, the planets at their best and close pairings, and satellites or rocket stages predicted to come down this week.

Privacy

Nothing you ask is stored here. Places are rounded to about 1 km before anything is worked out, and answers only name places, never exact spots. Your assistant's company handles your conversation under its own terms. To share a sighting with other people and get replies, report it on the site.