WikiVisually
Infinite photos and videos for every Wiki article · Find something interesting to watch in seconds
Celebrities Largest Palaces Rare Coins Wars and Battles Famous Castles Animals Ancient Marvels Great Artists Largest Empires Great Cities British Monarchs History by Country Great Museums Sports Wonders of Nature Kings of France Presidents Best Campuses Tallest Buildings World Banknotes Recovered Treasures Richest US Counties Supercars Crown Jewels Orders and Medals Countries of the World
more top lists
History
Stellar population
Videos
Page
In 1944, Walter Baade categorized groups of stars within the Milky Way into stellar populations. In the abstract of the article by Baade, he recognizes that Jan Oort originally conceived this type of classification in 1926.
Artist's conception of the spiral structure of the Milky Way showing Baade's general population categories. The blue regions in the spiral arms are co
Artist's conception of the spiral structure of the Milky Way showing Baade's general population categories. The blue regions in the spiral arms are composed of the younger population I stars, while the yellow stars in the central bulge are the older population II stars. In reality, many population I stars are also found mixed in with the older population II stars.
Population I star Rigel with reflection nebula IC 2118
Population I star Rigel with reflection nebula IC 2118
Artist’s impression of a field of population III stars 100 million years after the Big Bang.
Artist’s impression of a field of population III stars 100 million years after the Big Bang.
Possible glow of population III stars imaged by NASA's Spitzer Space Telescope
Possible glow of population III stars imaged by NASA's Spitzer Space Telescope
Walter Baade
Videos
Page
Wilhelm Heinrich Walter Baade was a German astronomer who worked in the United States from 1931 to 1959.
Walter Baade
Walter Baade