The sky, fully indexed.

A curated set of notable flights from NASA, CNSA, ESA, JAXA, ISRO and commercial operators — launch windows, payloads, orbits and outcomes, filterable by agency and decade.

All 88 IAU constellations on an interactive planetarium sky, with boundary lines, proper names and deep-sky overlays.

The eight planets on their real orbits at the real date, each placed from its own Keplerian elements rather than a drawn ellipse. Drag to fly around the system, or run the clock.

The whole sky on one chart — every star to sixth magnitude, all 88 constellations, the Messier catalogue and the Milky Way band, in six whole-sky projections.

Pan and zoom the sky across 21 survey bands, from optical through infrared to high energy, with a 101-object index and cross-matches resolved as you move.

Search a 64-record preprint index by title, author, keyword or abstract, with subject class, citation count and a citation you can copy in one click.

Propagate ten tracked objects every second from a dated element snapshot, with element age, position uncertainty and ground tracks in view.

What is worth going outside for: new and full Moons, eclipses, oppositions, transits and the major meteor showers — solved in your browser for any window.

Telemetry-style dashboards for active missions: rearrange panels, read reconstructed subsystem status, scrub through mission time and follow the event log.