By Glenn A. Walsh

Reporting for SpaceWatchtower

TODAY (Saturday, 2023 December 9) marks Aphelion for Comet Halley, the comet's farthest point in their orbit of the Sun. Halley's Comet's last Perihelion, their closest approaches to the Sun and Earth, came in 1986. Halley's Comet's next Perihelion will come in 2061.

1910 – Astronomer John Brashear shows Halley's Comet to the general public, using telescopes in Pittsburgh's Riverview Park, on the front lawn of the Allegheny Observatory.

1985 & 1986 – Pittsburgh's Buhl Science Center shows Halley's Comet to the general public, using telescopes in the original Buhl Planetarium Observatory, including the historic 10-inch Siderostat-type Refractor Telescope.

2023 December 9 – Halley's Comet reaches Aphelion.

2061 July 28 – Next Halley's Comet Perihelion.