À propos de Signal Hunter

Detect transit dips and radial wobbles to find exoplanets in this free online astronomy game about hunting alien worlds.

Signal Hunter is a free online exoplanet detection game where you pilot a space telescope across a survey field, logging real planets while rejecting impostor signals. It models the actual workflow of observatories like Kepler and TESS that scan thousands of stars for the tell-tale flicker of a transiting world.

The core mechanic is transit photometry. When a planet crosses the face of its star it blocks a sliver of light, producing a brief dip that repeats every orbit. The flash sprites on the star mimic those dips. False positives matter too: background eclipsing binary stars create nearly identical signals and cause most rejected candidates in real surveys. Stellar flares and micrometeorite strikes degrade real instruments, which is why contact damages your detector integrity.

The rarest catches mirror frontier science. Oxygen mixed with methane is a biosignature because both gases vanish unless life constantly replenishes them. And in 2026 astronomers announced the first auroral radio emission ever detected from an exoplanet, Beta Pictoris b, proving that alien worlds carry magnetic fields like Jupiter's. Snagging a fast radio burst is intentionally hard because those signals are fleeting in reality too.

Concepts Scientifiques Clés

• Transit photometry and periodic brightness dips
• Exoplanet types: rocky worlds, super-Earths and hot Jupiters
• Habitable zone and atmospheric biosignatures
• Auroral radio emission from planetary magnetic fields
• False positives from eclipsing binary stars
• Instrument hazards: stellar flares and micrometeoroids

Ce que Vous Apprendrez

• Explain how transit dips reveal orbiting exoplanets
• Distinguish real planet signals from binary-star false positives
• Describe why oxygen plus methane signals possible life
• Connect magnetic fields to exoplanet radio emission

Niveau Scolaire : Collège, Lycée

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Comment jouer

1. Steer the Telescope Move your mouse or drag to sweep the SGL-1 telescope across the star field.
2. Confirm Planets Fly over drifting exoplanets to log confirmed detections and earn score.
3. Catch Transit Dips A flash on the star means a planet is crossing. Lock onto it before the dip fades.
4. Chase Rare Signals Radio bursts and oxygen biosignatures streak by quickly but pay jackpot points.
5. Reject False Positives Eclipsing binaries mimic planets. Logging one wastes points, and flares and debris scorch your detector.
6. Recalibrate and Combo Tap the Detector Integrity gauge for an emergency sweep. Chain detections to trigger Deep Survey double score.

Questions fréquentes

Signal Hunter est-il gratuit ?

Oui. Signal Hunter est entièrement gratuit dans votre navigateur. Aucun téléchargement, installation ou compte n'est nécessaire.

Pour quel niveau scolaire est Signal Hunter ?

Signal Hunter est conçu pour les élèves de Collège, Lycée et convient bien comme activité en classe ou devoir.

Signal Hunter fonctionne-t-il sur téléphones et tablettes ?

Oui. Signal Hunter fonctionne dans tout navigateur moderne sur ordinateurs, Chromebooks, tablettes et téléphones en mode paysage.

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