Uploaded August 2025 | Updated September 2026, 2 weeks ago
Have you heard of the planet Vulcan? No, not the version from Star Trek! Vulcan was a proposed planet that would orbit between Mercury and the Sun - speculations date back to the 17th century!
Sadly, Vulcan stayed fictional.
Have you heard of the planet Vulcan? No, not the version from Star Trek! Vulcan was a proposed planet that would orbit between Mercury and the Sun - speculations date back to the 17th century!
Sadly, Vulcan stayed fictional.
