An interactive journey through astrophysics to measure the scale of the observable universe from parallax to Hubble expansion.

Simulate planetary transits across distant host stars to plot transit light dimming curves and derive orbital radii.

Launch a deep space probe past moving gas giants to execute gravity assist maneuvers and alter heliocentric velocity vectors.

Design sounding rockets, compute Barrowman center-of-pressure stability, and simulate flight profiles with 2D atmospheric wind drift.

Predict satellite footprint visibility, calculate ground station passes, and model real-time radio frequency Doppler shifts.

Arrange radio telescope antenna baselines to observe how array geometry dictates UV plane sampling and synthesized beam resolution.

Physics sandbox for gravity turns, coplanar Hohmann transfers, delta-v expenditure, and orbital rendezvous docking maneuvers.