S/2009 S 1 is a small moonlet orbiting in the outer part of Saturn's B ring, which was found in images taken by the Cassini spacecraft. It was identified by a shadow it cast on the ring when Saturn was close to its equinox, as the Sun then illuminated the rings at a very low angle. The moonlet is about 300 metres across, much smaller than the larger moons of Saturn, and it makes visible disturbances in the ring material around it. It was the first object found embedded in the main rings of Saturn that was visible in this way as an individual body.
Before and after
- 1 July 2009Creation of Zorin OS
- from 2 July 2009 to 20 August 2009Operation Strike of the Sword
- 21 July 2009Creation of Windows 7
- 22 July 2009Solar eclipse of July 22, 2009
- 26 July 2009Discovery of S/2009 S 1
- 11 August 2009Discovery of Ditsö̀
- 16 August 2009Usain Bolt runs 9.58 seconds
- 23 August 2009Creation of Julia
- from 10 September 2009 to 10 March 2017Premiere of The Vampire Diaries
More in Universe & space
- 16 February 1948Discovery of Miranda
- 4 March 1979Discovery of Metis
- 24 April 1990Launch of Hubble Space Telescope
- 1998Supernovae show that cosmic expansion is accelerating
- 10 April 2019The first image of a black hole
- 25 December 2021Launch of James Webb Space Telescope
The era
This moment belongs to the Contemporary world (1945 CE to today), the world since 1945. You can also browse everything in the 21st century.