|Launch Date||Oct. 11, 1958 | 23:41:58 UT|
|Launch Site||Baikonur Cosmodrome, Kazakhstan, Russia | Launch Site 1 |
|Nation||Soviet Union (2)|
|Alternate Names||Unnamed Luna|
Study the environment of interplanetary space and then crash into the Moon.
None. Vibrations in the strap-on boosters caused the launch vehicle to explode 104 seconds after launch.
In Depth: Ye-1 No. 2 (Luna)
This mission was the second attempt by the Soviet Union to send a probe to the Moon. The spacecraft never left Earth’s atmosphere. The launch vehicle exploded at T+104 seconds due to vibrations in the strap-on boosters. A similar malfunction caused Ye-1 No. 1 to disintegrate at T+93 seconds.
This mission was one of four initial probes approved by the Soviet government: Ye-1 (for lunar impact), Ye-2 (to photograph the far side of the Moon), Ye-3 (to photograph the far side of the Moon with advanced imaging equipment), and Ye-4 (lunar impact with a nuclear explosion).
Launch Vehicle: 8K72 (no. B1-4)
Spacecraft Mass: About 794 pounds (360 kilograms) including upper stage
- Fluxgate magnetometer
- Sodium-iodide scintillation counter
- Two gas discharge Geiger counters
- Two micrometeorite counters
- Cherenkov detector
- Four ion traps
- Sodium vapor experiment
- Scintillation counter
Siddiqi, Asif A. Beyond Earth: A Chronicle of Deep Space Exploration, 1958-2016. NASA History Program Office, 2018.