A comet tail and coma are visible features of a comet when they are illuminated by the Sun and may become visible from Earth when a comet passes through...

and the mechanism of coma and tail formation. These observations supported a number of longstanding hypotheses about comet construction, particularly Fred...

times Earth's diameter, while the tail may stretch beyond one astronomical unit. If sufficiently close and bright, a comet may be seen from Earth without...

projecting from a comet's coma which seems to go towards the Sun, and thus geometrically opposite to the other tails: the ion tail and the dust tail. Despite a...

Comet Hale–Bopp (formally designated C/1995 O1) is a long-period comet that was one of the most widely observed of the 20th century and one of the brightest...

The comet or comet-tailed goldfish is a single-tailed goldfish bred in the United States. It is similar to the common goldfish, except slightly smaller...

Like most comets, it has a very low albedo, reflecting only 4.6% of the light its nucleus receives, although comets generate a large coma and tail that can...

Comet Kohoutek (formally designated C/1973 E1 and formerly as 1973 XII and 1973f) is a comet that passed close to the Sun towards the end of 1973. Early...

interacting with neutral atoms in the coma of the comet. The Ulysses spacecraft fortuitously crossed the comet's tail at a distance of more than 500 million km...

−5.5, the comet was the second-brightest since 1935. Around perihelion on 12 January, it was visible worldwide in broad daylight. Its tail measured an...

C/2023 A3 (Tsuchinshan–ATLAS) (or Comet Tsuchinshan–ATLAS or simply Comet A3) is a comet from the Oort cloud discovered by the Purple Mountain Observatory...

The comet tail sign is a radiological finding seen in chest CT. It refers to a specific appearance resembling a comet's tail, characterised by a bright...

Shubunkin with deeply forked, pointed tail fins and longer finnage all around. Its appearance is similar to the comet goldfish. Bristol Shubunkins - It is...

amounts of sodium. The second twin tail was a golden color and was made of dust, like the tail of Comet Hale–Bopp. The comet was brighter than C/2011 L4 (PanSTARRS)...

The red-tailed comet (Sappho sparganurus) is a medium-sized hummingbird belonging to tribe Lesbiini of subfamily Lesbiinae, the "coquettes". It is found...

of 5 and its tail measured about one degree in length. By the end of February the comet had brightened to a magnitude of 3.5 while its tail was about two...

particles are left along the comet's orbital path while smaller particles are pushed away from the Sun into the comet's tail by light pressure. On 11 August...

March–April 2002, protons from the comet tail may have been detected by the Cassini spacecraft. This data suggested the comet tail had a length greater than 7...

in almost identical orbits, and the comet re-appeared in the morning sky in late October, showing a very bright tail. By early 1966, it had faded from view...

Aircraft tail, the empennage of an aircraft Comet tail, a visible part of a comet Tail recursion, a type of recursion in computer programming Tail rotor...

pH results in structures resembling comets, observed by fluorescence microscopy; the intensity of the comet tail relative to the head reflects the number...

total length, with single-tailed breeds often exceeding 1 foot (0.30 m). Single-tailed varieties include common and comet goldfish. In many countries...

a part of the tail. G.P. Bond also successfully photographed the comet on September 28 at Harvard College Observatory, the first comet photograph through...

An extinct comet is a comet that has expelled most of its volatile ice and has little left to form a tail and coma. In a dormant comet, rather than being...

material that forms the comet's coma and tail. Unlike a long-period comet, the next perihelion passage of a numbered periodic comet can be predicted with...

(Rokitansky–Aschoff sinuses or RAS), and twinkling artifact (or comet-tail reverberation). Comet tail reverberation, which is due to reflections from cholesterol...

a diameter of 5 arcminutes, while a thin ion tail 1.5–2 degrees long is visible in photographs. The comet was spotted with the naked eye by Piotr Guzik...

2019. The comet passed closest to Earth on 28 December 2019. In November 2019, astronomers from Yale University said that the comet's tail was 14 times...

In The Tail of a Comet is Dozer's first full album, released April 25, 2000 on Man's Ruin Records. It was recorded in February 1999 at the Rockhouse Studio...

comet that was visible to the naked eye in 1618 and 1619. It is classified as a "Great Comet" due to its extraordinary brightness and its long tail,...