Cosmology simulators
The universe at every scale, drawn from real catalogues: how far things are, how we see them, and how space itself grows.
From the Big Bang to Galaxies
One box of the universe from a split second after the Big Bang to today, across 54 orders of magnitude in time: quarks lock into protons, helium forms in three minutes, the glowing fog clears into the microwave background, and the seeds of inflation grow into the cosmic web.
A Journey Through the Universe
Fly from the planets to the edge of what we can see, through 45,000 Hipparcos stars, the Local Group, 43,000 galaxies of the 2MASS Redshift Survey and 42,000 SDSS quasars, to the cosmic microwave background as WMAP mapped it.
Travelling Near the Speed of Light
Pick a speed and see the real sky three ways: as Earth maps it, as the ship measures it, and where its light set out from. A ladder of scales from the Moon to the Coma Cluster shows how near everything gets, and how long the trip takes on your own clock.
Hubble Expansion
A box of galaxies carried apart by growing space. Stand on any of them and the rest recede as v = H d, so none is the centre. Change the matter and dark energy and watch the expansion slow, accelerate or turn round, and stretch a photon on its way across.
The Observable Universe
Why we see 46 billion light-years in a universe 13.8 billion years old, and why some of the galaxies we see are already out of reach. Three horizons as spheres through cosmic time, and our past light cone in 3D, shaped like a teardrop.