Ersa is one of the small moons of Jupiter, discovered in 2018 by a team led by the astronomer Scott Sheppard using ground-based telescopes. It orbits in the same group as the larger moon Himalia and is named after Ersa, a goddess of dew in Greek mythology and a daughter of Zeus and Selene. It is only a few kilometres across and travels in a prograde orbit far from the planet. Its discovery was part of a continuing search for small distant moons of the giant planets.
Before and after
- from 28 December 2017 to 7 January 20182017–2018 Iranian protests
- 2018Construction of Volgograd Arena
- 2018Construction of Rostec Arena
- 2018Construction of Mordovia Arena
- 2018Discovery of Ersa
- 20 January 2018Turkish military operation in Afrin
- 27 January 20182018 Kabul ambulance bombing
- from February 2018 to March 2023ECOSTRESS
- 14 February 2018Marjory Stoneman Douglas High School shooting
More in Universe & space
- 22 June 1978Discovery of Charon
- 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.