1930 ⟶ Pluto Discovered by Clyde Tombaugh

February 18: Clyde Tombaugh discovers Pluto.
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Year
1877
1912
1930
1962
1978
2015

🪐 Asaph Hall Discovers Martian Moons

Asaph Hall discovers the moons of Mars.⟶
Asaph Hall Discovers Martian Moons (1877)
AstronomySpace ExplorationPlanetary ScienceMars
United StatesUnited States

🔭 Henrietta Swan Leavitt Discovers Cepheid Period-Luminosity Relation

Henrietta Swan Leavitt: Cepheid variable period-luminosity relation⟶
Henrietta Swan Leavitt Discovers Cepheid Period-Luminosity Relation (1912)
AstronomyCosmologyAstrophysicsEdwin Hubble
United StatesUnited States

🪐 Pluto Discovered by Clyde Tombaugh

February 18: Clyde Tombaugh discovers Pluto.⟶
Pluto Discovered by Clyde Tombaugh (1930)
AstronomySpace ExplorationPlanetsAstrophysicsSolar SystemDiscovery
United StatesUnited States

🔭 Discovery of Scorpius X-1, the First Cosmic X-Ray Source

Riccardo Giacconi and his team discover the first cosmic x-ray source, Scorpius X-1⟶
Discovery of Scorpius X-1, the First Cosmic X-Ray Source (1962)
AstronomyAstrophysicsCosmologySpace ExplorationObservational Astronomy
United StatesUnited States

🪐 Charon, Pluto's Moon, Discovered

June 22: Discovery of Pluto's moon Charon.⟶
Charon, Pluto's Moon, Discovered (1978)
AstronomySpace ExplorationPlanetary ScienceKuiper BeltSolar SystemCelestial BodiesDiscovery
United StatesUnited States

🔭 New Horizons and Dawn Spacecraft Transmit First Close-Up Images of Ceres and Pluto

First close-up images of Ceres and Pluto.⟶
New Horizons and Dawn Spacecraft Transmit First Close-Up Images of Ceres and Pluto (2015)
Space ExplorationAstronomyPlanetary ScienceSolar SystemNASADwarf Planets
United StatesUnited States