Kosmos 305
      
Kosmos 305 (Russian: Космос 305 meaning Cosmos 305) (Ye-8-5 series) was the fifth Soviet attempt at an unmanned lunar sample return. It was probably similar in design to the Luna 16 spacecraft. It was launched, on a Proton rocket, on October 22, 1969. The engines on the Block D upper stage failed, terminating the mission.  This left the spacecraft stranded in Earth orbit.
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 |  |  | Venera 5 | Venera 6  | Kosmos 263 | Soyuz 4  | Soyuz 5  | 7K-L1 No.13L  | OSO-5 | OPS 7585 | Kosmos 264 | US-A No.5  | Isis 1 | Meteor-1 No.11  | OPS 3890·  OPS 2644 | Intelsat III F-3  | Kosmos 265  | OPS 0757 | Luna E-8 No.201  | 7K-L1S No.3  | Mariner 6  | Kosmos 266 | ESSA-9  | Kosmos 267 | Apollo 9  | OPS 4248 | Kosmos 268  | Kosmos 269 | Kosmos 270 | Kosmos 271 | Kosmos 272 | OV1-17·  OV1-18·  OV1-19·  Orbiscal 2 | OPS 3722·  OPS 2285 | Kosmos 273 | Kosmos 274 | Meteor-1 No.12 | 2M No.521  | Mariner 7  | Kosmos 275  | 2M No.522  | Kosmos 276 | Kosmos 277  | Kosmos 278 | Molniya-1 No.16 | OPS 3148 | Nimbus 3·  SECOR 13 | Kosmos 279 | OPS 5310 | Kosmos 280 | OPS 1101·  OPS 1721 | Kosmos 281 | Apollo 10  | Kosmos 282 | Intelsat III F-4 | OPS 6909·  OPS 6911·  ERS-29·  ERS-26·  OV5-9 | Kosmos 283  | Kosmos 284 | Kosmos 285  | OPS 1077 | OGO-6  | Luna E-8-5 No.402  | Kosmos 286 | Explorer 41 | Kosmos 287 | Kosmos 288 | Biosatellite 3 | STV-2  | 7K-L1S No.5  | Kosmos 289 | Luna 15  | Apollo 11  | Kosmos 290 | Molniya-1 No.18 | OPS 1127 | DS-P1-Yu No.23  | OPS 3654 | Intelsat III F-5 | OPS 8285 | Kosmos 291 | Zond 7  | OSO-6·  PAC-1 | ATS-5 | Kosmos 292 | Kosmos 293 | Kosmos 294 | Kosmos 295  | OPS 7807 | Pioneer E ·  ERS-32  | Kosmos 296 | Kosmos 297 | Kosmos 298 | Kosmos 299 | Unnamed  | OPS 3531·  OPS 4710 | Kosmos 300  | Kosmos 301 | OPS 7613·  NRL PL-161·  NRL PL-162·  NRL PL-163·  NRL PL-164·  NRL PL-176·  Timation 2·  Tempsat 2·  SOICAL Cone·  SOICAL Cylinder | ESRO-1B | Meteor-1 No.15 | Soyuz 6  | Soyuz 7  | Soyuz 8  | Interkosmos 1 | Kosmos 302 | Kosmos 303  | Kosmos 304 | Kosmos 305  | Kosmos 306 | Kosmos 307  | OPS 8455 | Kosmos 308  | Azur  | Kosmos 309 | Apollo 12  | Kosmos 310 | Skynet 1A  | Kosmos 311  | Kosmos 312 | 7K-L1e No.1  | Kosmos 313 | OPS 6617 | Kosmos 314  | Kosmos 315 | Kosmos 316 | Kosmos 317 | Interkosmos 2 | Unnamed |  |  |  | Payloads are separated by bullets ( · ), launches by pipes ( | ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets. | 
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