Halley's Comet
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Halley's Comet is the only known short-period comet that is consistently visible to the naked eye from Earth, appearing roughly every 75–76 years, though with the majority of recorded apparitions occu
Halley's Comet photographed by William Liller from Easter Island on 8 March 1986
"I must entreat you to procure for me of Mr Flamsteed what he has observed of the Comett of 1682 particularly in the month of September, for I am more and more confirmed that we have seen that Comett now three times, since yͤ Yeare 1531, he will not deny it you, though I know he will me." —Excerpt of Halley's letter to Newton about comet's orbits (September 28, 1695)
Jamaican polymath Francis Williams (portrait attributed to William Williams, c. 1760). The only contemporary illustration of an astronomer detecting the comet's return.
Orionid meteor originating from Halley's Comet streaking the sky below the Milky Way and to the right of Venus
Scattered disc
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The scattered disc is a distant circumstellar disc in the Solar System that is sparsely populated by icy small Solar System bodies, which are a subset of the broader family of trans-Neptunian objects.
Eris (center), the largest known scattered-disc object, and its moon Dysnomia (left of Eris)
Tempel 1, a Jupiter-family comet
Ceres RC3 Haulani Crater
Pluto in True Color High Res