Posts in category

Week 45


Comet of the Week: 17P/Holmes

Read More

Special Topic: The Death of Comets

Read More

NOVEMBER 1, 1577: Observers in Peru make the first sighting of the Great Comet of 1577. This comet, a brilliant object which is often referred to as “Tycho Brahe’s Comet” and which is one of the most important scientific comets in history, is next week’s “Comet of the Week.”  NOVEMBER 1, 1948: Observers on the …

Perihelion: 2007 May 4.50, q = 2.053 AU  With the light pollution that is endemic to large metropolitan areas, it would seem difficult to believe that any significant astronomical observational activities could be conducted from cities like London these days. But things were different during the late 19th Century . . . On the evening of …

What happens to comets when they “die?” Our solar system has been around for 4.6 billion years, and, obviously, a large percentage of the comets that the solar system started off with are no longer with us. While many comets still remain in the reservoirs of the outer solar system, i.e., the Kuiper Belt and …