1929 ⟶ Hubble Formulates Law of Expanding Universe
Edwin Hubble: Hubble's law of the expanding universe
Year
1912
1925
1929
1967
1998
🔭 Vesto Slipher Observes Redshifts of Spiral Nebulae
AstronomyCosmologyGalaxiesObservational AstronomyExpansion of the UniversePhysics
United States🔭 Henrietta Swan Leavitt Discovers Cepheid Period-Luminosity Relation
AstronomyCosmologyAstrophysicsEdwin Hubble
United States⚛️ Cecilia Payne-Gaposchkin Determines Solar Composition and Hydrogen Abundance
Cecilia Payne-Gaposchkin: Discovery of the composition of the Sun and that hydrogen is the most abundant element in the Universe⟶
AstronomyCosmologyAstrophysicsElements20th Century Science
United States🔭 Hubble Formulates Law of Expanding Universe
Edwin Hubble: Hubble's law of the expanding universe⟶
AstronomyCosmologyEdwin Hubble20th Century ScienceUniverseExpansionSpace
United States☄️ First Gamma-Ray Burst Detected by Vela Satellites
Vela nuclear test detection satellites discover the first gamma-ray burst⟶
AstronomyAstrophysicsSpace ExplorationCold WarParticle Physics
United States🔭 Discovery of the Accelerated Expansion of the Universe
Supernova Cosmology Project and the High-Z Supernova Search Team: discovery of the accelerated expansion of the Universe and dark energy⟶
CosmologyAstronomySupernovaUniverseExpansionObservationResearch
United States