Hubble Space Telescope black holes in galaxies is thus to demonstrate a deep connection between galaxies and their central black holes. The collision of Comet Shoemaker-Levy 9 with Jupiter in 1994 was fortuitously timed for astronomers, coming just a few months after Servicing Mission 1 had restored Hubble's optical performance. Hubble images of the planet were sharper than any taken since the passage of Voyager 2 in 1979, and were crucial in studying the dynamics of the collision of a comet with Jupiter, an event believed to occur once every few centuries. Other discoveries made with Hubble data include proto-planetary disks (proplyds) in
Great January Comet of 1910 twilight, its noticeably curved tail reaching up to 50 degrees by early February. The year 1910 saw considerable media interest in the predicted return of Halley's Comet, which reached perihelion on April 20. The appearance of the Daylight Comet several months earlier therefore came as something of a surprise, and made an extremely strong impression on an expectant public; when Halley's Comet returned again in 1986, many older people's accounts of having seen it in 1910 clearly referred to the Daylight Comet instead. Owing to a "telephonic error", the comet was initially reported as being named Drake's Comet, though once