Skulls on Mars
Rudenko’s information seems plausible and believable, though the publication itself is sketchy. Pravda is known worldwide for making pretentious claims that aren’t true. Therefore, it’s generally best not to listen to those stories.
Reason for Skepticism
You can’t use logic to prove the conspiracy theories, which is one reason to be skeptical. The USSR claimed that Gagarin was in space while it was happening. If they didn’t want anyone to know bad news, they wouldn’t publicly acknowledge the mission until it had ended.