SpazePeriodic comet
Hartley 2
A small, hyperactive comet shaped like a bowling pin, firing jets of CO₂ that drag chunks of ice with them.
- Size
- 2 km
- Orbit
- 6.5 years
- Distance from Sun
- 1.1 to 5.9 AU
- Day
- 18.1 hours
- Visited by
- EPOXI, 2010
Can we live on Hartley 2?
Air: only a faint trace of H₂O, CO₂, far too thin to breathe. You’d live in sealed, pressurised habitats.
Ground: Ice and dust; jets driven by carbon dioxide.
Atmosphere
- H₂O
- CO₂
Measured by EPOXI