THESEUS
| Mission type | Space observatory |
|---|---|
| Operator | European Space Agency |
| Spacecraft properties | |
| Power | 115 W |
| Start of mission | |
| Launch date | 2037 (proposed) |
| Rocket | Vega-E (baseline) |
| Orbital parameters | |
| Regime | Low Earth orbit |
| Altitude | 600 km |
| Inclination | 5° (equatorial) |
| Main | |
| Diameter | Infrared: 70 cm; Cassegrain type |
| Wavelengths | Infrared, Gamma-rays and X-rays |
Cosmic Vision M-class | |
Transient High-Energy Sky and Early Universe Surveyor (THESEUS) is a space telescope mission proposal by the European Space Agency that would study gamma-ray bursts and X-rays for investigating the early universe. If developed, the mission would investigate star formation rates and metallicity evolution, as well as studying the sources and physics of reionization.