Explore the Universe — for free
Browse 12 astronomy and astrophysics courses across 8 subjects. Sign in to enrol, track your progress, earn XP, and unlock premium content.
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8 subjects · 12 courses
Beyond the Event Horizon
Journey into the most extreme environments in the universe — black holes, gravitational waves, and beyond.
The Big Bang & Beyond
From the Big Bang to dark energy — the origin and fate of the universe.
The Milky Way & Beyond
Explore our galaxy and the vast universe of galaxies beyond it.
How We See the Universe
Discover how telescopes, light, and detectors reveal the invisible cosmos.
Is Anyone Out There?
Explore extremophiles, the Drake Equation, and the search for extraterrestrial life.
Exoplanet Detective
Hunt for planets around distant stars using real Kepler and TESS data.
The Life of Stars
From stellar nurseries to neutron stars — follow a star through its entire lifecycle.
Our Cosmic Neighbourhood
Tour the eight planets and the smaller bodies that make up our Solar System.
Moons of the Solar System
Dive into ocean worlds, volcanic moons, and the search for life beyond Earth.
Exoplanet Atmospheres & JWST
Read alien skies with JWST transmission spectroscopy and hunt for biosignatures.
Variable Stars & Binary Systems
Explore pulsating Cepheids, eclipsing binaries, and the cosmic distance ladder.
Relativity & Spacetime
Master special and general relativity — from time dilation to curved spacetime.