Credits & data sources

This site is built on open catalogs and open code. Every source that makes it work, and what each one provides here.

• ATHYG v3.2

  Star positions, distances and magnitudes for Fly Out's 3D field.

  License CC BY-SA 4.0

• Yale Bright Star Catalogue (BSC5P)

  The naked-eye stars drawn in the live sky and in Draw the Sky.

  License Public domain

• OpenNGC

  Deep-sky object sizes, types and coordinates for Tonight, For Your Scope.

  License CC BY-SA 4.0

• 2MASS Redshift Survey (2MRS)

  The 43,000 real galaxies of Fly Out's cosmic web, via VizieR (CDS). Huchra et al. 2012, ApJS 199, 26.

  License Free reuse with citation (CDS terms)

• Stellarium sky cultures

  Constellation figures and names for the five cultures; each culture keeps its own license and attribution.

  License GPL-2.0 + per-culture terms

• CelesTrak (TLE data)

  ISS and satellite pass predictions in the ephemeris line.

  License Free reuse with attribution

• astronomy-engine

  All rise, set, transit and Moon-phase calculations, run in your browser.

  License MIT

• three.js

  The WebGL renderer behind Fly Out.

  License MIT

• IERS / USNO constants

  Sidereal time and precession constants used to place the sky.

  License Public domain

• Inter

  The typeface used for every word on this site.

  License SIL Open Font License 1.1

• NASA/Goddard Space Flight Center Scientific Visualization Studio — Lunar Reconnaissance Orbiter

  Arrival photograph for The Moon, in Fly Out.

  License Public domain

• NASA/SDO and the AIA science team — today's Sun in extreme ultraviolet

  Arrival photograph for The Sun, in Fly Out.

  License Public domain

• NASA/JPL/USGS — Viking Orbiter, a mosaic of 102 frames

  Arrival photograph for Mars, in Fly Out.

  License Public domain

• NASA/JPL-Caltech/SwRI/MSSS — JunoCam, processed by Gerald Eichstädt and Seán Doran

  Arrival photograph for Jupiter, in Fly Out.

  License Public domain

• NASA/JPL-Caltech/Space Science Institute — Cassini, "The Day the Earth Smiled"

  Arrival photograph for Saturn, in Fly Out.

  License Public domain

• NASA/JPL-Caltech — Voyager 1, "Pale Blue Dot" revisited (2020)

  Arrival photograph for Voyager 1, in Fly Out.

  License Public domain

• NASA/ESA Hubble Space Telescope

  Arrival photograph for Alpha Centauri, in Fly Out.

  License Public domain

• NASA/JPL-Caltech/STScI — Spitzer and Hubble Space Telescopes

  Arrival photograph for The Orion Nebula, in Fly Out.

  License Public domain

• NASA/JPL-Caltech/ESA/CXC/STScI — Hubble, Spitzer and Chandra

  Arrival photograph for The Galactic Centre, in Fly Out.

  License Public domain

• NASA/ESA/STScI — Hubble, the PHAT survey (J. Dalcanton, B. F. Williams, L. C. Johnson) and R. Gendler

  Arrival photograph for Andromeda, in Fly Out.

  License Public domain

• Your browser

  Does all the computing. Nothing is sent to a server, because there isn't one.

  License —