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    Jean-Dominique Cassini aka Giovanni Domenico Cassini (1625-1712). An Italian astronomer who became director of the Paris Observatory and a naturalized Frenchman. For his early observations of Saturn's rings and moons NASA named its Cassini mission to Saturn in his honor. Cassini is still taking fabulous pictures of the Saturnian system. (Portrait: Leopold Durangel) ©Mona Evans, "10 Amazing Facts about Saturn's Moons" www.bellaonline.c...

    Rings of Saturn from Cassini.

    Saturn From Cassini. Credit: Cassini, Judy Schmidt, NASA

    Caroline Lucretia Herschel (16 de marzo de 1750 – 9 de enero de 1848) Fue una astrónoma inglesa de origen alemán.. Trabajó con su hermano Sir William Herschel ayudándole tanto en la elaboración de sus telescopios como en sus observaciones. Descubrió ocho cometas entre los que destaca el correo (periódico) Herschel-Rigollet, que lleva su nombre pues lo descubrió el 21 de diciembre de 1788.

    NASA's Cassini spacecraft has been studying Saturn and its moons since it entered orbit in 2004. This image, taken on Oct. 5, 2008, is a stunning mosaic of the geologically active Enceladus after a Cassini flyby.

    In this image from NASA’s Cassini spacecraft, Saturn‘s rings obscure part of Titan‘s colorful visage.

    Saturn's moon Iapetus. Comparison of the two hemispheres. The dark terrain is called Cassini Regio after Jean Dominique Cassini. It's fairly smooth, showing that new material is being deposited which covers old cratering. (Credit: JPL NASA) Mona Evans, "10 Amazing Facts about Saturn's Moons" www.bellaonline.c...

    Enceladus. A moon of Saturn that is geologically active as it's heated by tidal effects from Saturn. Giant planets often cause internal heating and geological activity in their moons. Jason Major made a composite picture from Cassini probe data in order to show the moon lit as a crescent and its ice geysers erupting. ©Mona Evans, "10 Amazing Facts about Saturn's Moons" www.bellaonline.c...

    ▶ Rhea Transits Saturn - YouTube (Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA) The slim crescent of the moon Rhea transits a crescent Saturn. In an interplay of contrast and shadow, the moon goes dark against the planet, and then its crescent suddenly brightens as it slips in front of Saturn's night side. The view is edge-on to the rings, which you can see as a dark line. Mona Evans, “Rhea Moon of Saturn” www.bellaonline.c...

    Saturn's moon Tethys is the tiny dot in the upper left. It's several times more massive than all of the rings put together, but the rings are much more diffuse. This image was taken with Cassini's wide-angle camera on Aug 19 2012. It was below the ring plane looking at the unlit side of the rings. ©Mona Evans, "10 Amazing Facts about Saturn's Moons" www.bellaonline.c...

    On July 19, NASA's Cassini spacecraft captured a rare image of Saturn's rings and our planet Earth and its moon.

    Saturn, rings, and largest moon Titan. Titan is much larger than the Moon and is the second largest Moon in the Solar System. But it looks very small here. (Image credit: Cassini Imaging Team, SSI, JPL, ESA, NASA) ©Mona Evans, “10 Amazing Facts about Saturn's Moons” www.bellaonline.c...

    Titan, composite taken during Cassini flyby 2005-04-16, approximating what Titan would look like to the human eye: a hazy orange globe surrounded by a tenuous, bluish haze. The orange is due to hydrocarbon particles making up the haze, which was frustrating for scientists studying the NASA Voyager mission images in 1980-81. But Cassini can see through the haze in infrared. (Credit: NASA/JPL) Mona Evans, "10 Amazing Facts about Saturn's Moons" www.bellaonline.c...

    Saturn’s moon Iapetus photographed by the Cassini spacecraft. The right side is overexposed because it’s illuminated by the Sun. The left side glows by light reflecting off Saturn’s clouds. Since sunlight is much fainter at Saturn’s distance than at Earth’s, Cassini had to make a long time exposure to capture this image. (Credit: NASA) Mona Evans, "Earthshine" www.bellaonline.c...

    On July 3, 1969, the biggest explosion in the history of rocketry occurred when the Soviet N-1 rocket exploded and subsequently destroyed its launchpad. After four unsuccessful launch tries of the Soviet counterpart to the NASA Saturn V rocket the Russian Moon program was cancelled in May 1974.

    Titan, Saturn's Largest Moon, Explained (Infographic) oak.ctx.ly/r/1jt1g pic.twitter.com/dGgUBGiuHa

    Famous Astronomers

    Scarlatti Stuart Rankin Messenger image of the crater Scarlatti on Mercury.

    Voyager 1 has entered interstellar space. The NASA spacecraft, which rose from Earth on a September morning 36 years ago, has traveled farther than anyone, or anything, in history. Now Voyager 1 is in the space between the stars

    Supernova remnant G266.2-1.2 (NASA, Chandra, 10/28/13)