Kepler-452b is an exoplanet about 1,400 light-years from Earth in the constellation Cygnus, found by NASA's Kepler space telescope with the transit method, which detects the slight dimming of a star when a planet passes in front. NASA announced it in July 2015. It orbits a star similar to the Sun in about 385 days, close to the length of an Earth year, and so lies within the habitable zone of its star. The planet is about 60 percent larger than Earth in diameter, which means it could be rocky or could be more like a small gas planet, and its composition is unknown. The press called it Earth's cousin, but its great distance puts it out of reach of study.
Before and after
- 16 June 2015Donald Trump 2016 presidential campaign
- 16 June 2015Rise of Trumpism
- 14 July 2015New Horizons flies by Pluto
- 20 July 2015Creation of Android Marshmallow
- 23 July 2015Discovery of Kepler-452b
- 29 July 2015Creation of Windows 10
- 29 July 2015Release of Microsoft Edge
- 30 July 2015Release of Ethereum
- August 2015Discovery of K2-18 b
More in Universe & space
- 1 May 1949Discovery of Nereid
- 20 August 1977Launch of Voyager 2
- 16 June 1989Discovery of Proteus
- 23 July 1995Discovery of Comet Hale-Bopp
- 15 May 2005Discovery of Nix
- 10 September 2005Discovery of Dysnomia
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.