Proton | Gorizont 25L
The Communications flight Proton | Gorizont 25L departed Baikonur Cosmodrome, Republic of Kazakhstan atop a Proton, bound for Direct-GEO.
- Launch time
- Status
- FAILED
- Operator
- Soviet Space Program
- Mission type
- Communications
- Rocket
- Proton
- Launch site
- Baikonur Cosmodrome, Republic of Kazakhstan
- Launch pad
- 200/40
- Payload
- —
- Target orbit
- Direct-GEO

Mission timeline
- 1988-01-18T09:58:00.000ZProton lifts off from Baikonur Cosmodrome, Republic of Kazakhstan.
- Proton passes through max aerodynamic pressure (Max Q).
- The mission ends in failure.