With the discovery of six new exoplanets, scientists have tipped the scales and surpassed 5,500 exoplanets found (there are now 5,502 known exoplanets, to be exact).
Hubble Space Telescope 2019 - eoPortal
Beyond 5,500 Worlds: A Sextet of New Exoplanets Sends Discovery
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Exoplanet Musings The Planets of Other Suns
International Space Agencies - Missions and Discoveries - Civilsdaily
Discovery Alert: With Six New Worlds, 5,500 Discovery Milestone
Discovery Of Six New Worlds Pushes Number Of Known, 44% OFF
Discovery Alert: A 'Super-Earth' in the Habitable Zone – Exoplanet
Hubble Space Telescope 2019 - eoPortal
Discovery Alert: The Planet that Shouldn't Be There – Exoplanet
Discovery Alert: With Six New Worlds, 5,500 Discovery Milestone
LNP: EXOPLANETS - Discovering New Worlds