Cometary in a sentence

Neither object had a cometary tail, leading some scientists to believe they were artificial.

It is when these clouds show an extended tail that they are referred to as cometary globules because of the slight resemblance to a comet.

Planetary scientists typically measure the nongravitational accelerations of comets after detecting their cometary tails.

Stunning images of the Perseid meteor shower have documented the celestial event reaching its peak this week as the Earth passes through a cloud of cometary dust.

But the intrinsic blurriness of the object, which on closer inspection seems to be shrouded in a cometary cloud of gas, makes accurate measurements of its position and velocity difficult.

In July 1994, Hammel was on the Hubble team that chronicled this momentous event, when 21 cometary fragments of Shoemaker-Levy 9 slammed into Jupiter over the course of several days.

A coronal mass ejection carried the cometary material to Ulysses.

A few objects have ended up being dual-listed because they were first classified as minor planets but later showed evidence of cometary activity.

At the time of its discovery, Chiron was close to aphelion, whereas the observations showing a coma were done closer to perihelion, perhaps explaining why no cometary behavior had been seen earlier.

Cometary behavior In February 1988, at 12 AU from the Sun, Chiron brightened by 75 percent.

Debris disk In 2004, a team of UK astronomers led by Jane Greaves discovered that Tau Ceti has more than ten times the amount of cometary and asteroidal material orbiting it than does the Sun.

He pointed out that a body composed of cometary material, travelling through the atmosphere along such a shallow trajectory, ought to have disintegrated, whereas the Tunguska body apparently remained intact into the lower atmosphere.

In recent years, observations by a variety of spacecraft have shown significant structure in the zodiacal light including dust bands associated with debris from particular asteroid families and several cometary trails.

It receives the most frequent comet impacts of the Solar System's planets. citation It was thought that the planet served to partially shield the inner system from cometary bombardment.

Main-belt comets main Several otherwise unremarkable bodies in the outer belt show cometary activity.

Models predict that the inner cloud should have tens or hundreds of times as many cometary nuclei as the outer halo; it is seen as a possible source of new comets to resupply the tenuous outer cloud as the latter's numbers are gradually depleted.

Oort noted that the number of returning comets was far less than his model predicted, and this issue, known as "cometary fading", has yet to be resolved.

Scientific results Comet Hale–Bopp was observed intensively by astronomers during its perihelion passage, and several important advances in cometary science resulted from these observations.

The amount of sulfur implied by the quantities of these compounds was much greater than the amount that would be expected in a small cometary nucleus, showing that material from within Jupiter was being revealed.

The cometary hypothesis gained a general acceptance amongst Soviet Tunguska investigators by the 1960s.