Vulcan (/ ˈvʌlkən /) [2] was a proposed planet that some pre-20th century astronomers thought existed in an orbit between Mercury and the Sun. Speculation about, and even purported …

1 day ago · On January 2, 1860, French astronomer Urbain (often spelled Urban) Le Verrier announced what he believed to be the discovery of a new planet orbiting closer …

Sep 12, 2017 · But despite the fact that most reputable astronomers couldn’t find a planet or even an asteroid belt where Vulcan should be, the speculation persisted.

May 30, 2024 · Astronomers have found that signals interpreted as signs of a world orbiting a star called 40 Eridani A, or HD 26965 – the star around which the planet Vulcan orbits in the sci-fi …

Oct 19, 2023 · After rigorously examining Edmond’s data, Le Verrier, in 1860, officially announced to the world the discovery of Vulcan, the planet between Mercury and the Sun.

Sep 18, 2025 · While Vulcan was never found, the concept captured the imagination of both scientists and the public. It also contributed to the development of modern astrophysics and …

The “wobble” in the orbit of Mercury (seen here) was thought to be the result of the gravitational tug of an undiscovered planet called Vulcan, which didn’t exist.

May 25, 2025 · Today, the International Astronomical Union has reserved the name “Vulcan” for the “hypothetical” planet inside the orbit of Mercury.

Feb 18, 2025 · Throughout history, science has been shaped by both brilliant discoveries and persistent misconceptions. One such astronomical enigma was the hypothetical planet Vulcan, …

Nov 8, 2024 · Though Vulcan was disproven, its legacy persisted. The story of Vulcan became a cautionary tale within the scientific community, illustrating the dangers of clinging too tightly to …