1910 ⟶ Halley's Comet Returns, Sparking Widespread Public Interest

April: Halley's Comet returns.
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Year
66
1910
1912
1986
2020

☄️ Halley's Comet Visible

Halley's Comet is visible.⟶
Halley's Comet Visible (66)
AstronomyCometsCelestial EventsNatural PhenomenaRoman EmpireEarly Science

☄️ Halley's Comet Returns, Sparking Widespread Public Interest

April: Halley's Comet returns.⟶
Halley's Comet Returns, Sparking Widespread Public Interest (1910)
AstronomyCometsPopular CultureCelestial Events

🔭 Vesto Slipher Observes Redshifts of Spiral Nebulae

Vesto Slipher: galactic redshifts⟶
Vesto Slipher Observes Redshifts of Spiral Nebulae (1912)
AstronomyCosmologyGalaxiesObservational AstronomyExpansion of the UniversePhysics
United StatesUnited States

☄️ Halley's Comet Returns

March: Return of Halley's Comet.⟶
Halley's Comet Returns (1986)
AstronomyCometsSpace ExplorationScientific ObservationPopular Culture

🔭 Jupiter and Saturn's Closest Conjunction Since 1623

December 21: A great conjunction of Jupiter and Saturn occurs, with the two planets separated in the sky by 0.1 degrees. This is the closest conjunction between the two planets since 1623.⟶
Jupiter and Saturn's Closest Conjunction Since 1623 (2020)
AstronomyPlanetsCelestial EventsSpaceObservational AstronomyScientific Observation