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Vulcan in a lithographic map from 1846 [1] Vulcan / ˈ v ʌ l k ən / [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 observations of, intermercurial bodies or planets date back to the beginning of the 17th century.
Schematic diagram of the orbits of the fictional planets Vulcan, Counter-Earth, and Phaëton in relation to the five innermost planets of the Solar System.. Fictional planets of the Solar System have been depicted since the 1700s—often but not always corresponding to hypothetical planets that have at one point or another been seriously proposed by real-world astronomers, though commonly ...
Vulcan Centaur is a heavy-lift launch vehicle [a] developed and operated by United Launch Alliance (ULA). It is a two-stage-to-orbit launch vehicle consisting of the Vulcan first stage and the Centaur second stage.
Vulcan Centaur VC4L [13] Cape Canaveral, SLC‑41: SSC Demo-1 (Dream Chaser Tenacity) LEO NASA First flight of Dream Chaser. Maiden flight of the Vulcan Centaur VC4L configuration. Q3 2025 [18] Vulcan Centaur VC2S Vandenberg, SLC‑3E: SDA T1TR-B LEO: SDA: Tranche 1 Tracking Layer B missile tracking satellites. Q3 2025 [18] Vulcan Centaur VC2S
ULA wants to develop a Vulcan model tailored to the increasingly lucrative low Earth orbit (LEO) market, mainly due to SpaceX launching thousands of satellites there for its Starlink Internet service.
The vulcanoids are a hypothetical population of asteroids that orbit the Sun in a dynamically stable zone inside the orbit of the planet Mercury. They are named after the hypothetical planet Vulcan, which was proposed on the basis of irregularities in Mercury's orbit that were later found to be explained by general relativity. So far, no ...
The Vulcan's two Blue Origin-built BE-4 engines and twin solid rocket boosters, or SRBs, thundered to life at 7:25 a.m. EDT, shattering the morning calm with the crackling roar of 2 million pounds ...
Vulcan can use up to six solid rocket motors for extra boost, allowing it to loft up to 60,000 pounds (27,000 kg) of satellites in a low orbit, or 32,000 pounds (14,500 kg) to further orbits.