Halley's Comet or Comet Halley (/Ëhaeli/ ËhÃ¦li /or/), ËheÉªli officially DESIGNATED/1p, halley is a-short period comet visible From earth everyâ75 76. yearshe perihelion, the point in the comet's orbit when it is nearest the Sun, is just 0.6 AU. This is between the orbits of Mercury and Venus. Its aphelion, or farthest distance from the Sun, is 35 AU (roughly the distance of Pluto).
The definition of a sycophant is a person who tries to gain attention by flattering wealthy or influential people. An example of a sycophant is someone who agrees with everything his boss says and who brings his boss gifts once a month. a person who seeks favor by flattering people of wealth or influence; parasite; toady. Origin of sycophant.
macrophage-a large phagocyte; some are fixed and other circulate in the blood stream. fixed phagocyte-a phagocyte that does not circulate in the blood but is fixed in the liver or spleen or bone marrow etc.