Riccardo Giacconi

1931 - 2018

Photo of Riccardo Giacconi

Icon of person Riccardo Giacconi

Riccardo Giacconi ( jə-KOH-nee, Italian: [rikˈkardo dʒakˈkoːni]; October 6, 1931 – December 9, 2018) was an Italian-American Nobel Prize-winning astrophysicist who laid down the foundations of X-ray astronomy. Read more on Wikipedia

Since 2007, the English Wikipedia page of Riccardo Giacconi has received more than 182,706 page views. His biography is available in 68 different languages on Wikipedia (up from 63 in 2019). Riccardo Giacconi is the 55th most popular astronomer (down from 35th in 2019), the 902nd most popular biography from Italy (down from 620th in 2019) and the 7th most popular Italian Astronomer.

Riccardo Giacconi is most famous for discovering the cosmic microwave background radiation, which is the oldest form of light in the universe.

Memorability Metrics

  • 180k

    Page Views (PV)

  • 71.62

    Historical Popularity Index (HPI)

  • 68

    Languages Editions (L)

  • 10.08

    Effective Languages (L*)

  • 3.67

    Coefficient of Variation (CV)

Page views of Riccardo Giacconis by language


Among astronomers, Riccardo Giacconi ranks 55 out of 532Before him are Jérôme Lalande, Ahmad ibn Muhammad ibn Kathir al-Farghani, Percival Lowell, William Lassell, Ferdinand Verbiest, and Max Wolf. After him are Fritz Zwicky, Heinrich Louis d'Arrest, Martin Ryle, Friedrich Georg Wilhelm von Struve, Antony Hewish, and Gerard Kuiper.

Most Popular Astronomers in Wikipedia

Go to all Rankings


Among people born in 1931, Riccardo Giacconi ranks 42Before him are Annie Girardot, Aldo Rossi, Monica Vitti, Johannes Rau, James Earl Jones, and Khieu Samphan. After him are Don King, Fernando Henrique Cardoso, Michael Lonsdale, Ettore Scola, Faten Hamama, and James Cronin. Among people deceased in 2018, Riccardo Giacconi ranks 33Before him are Arto Paasilinna, Francis Lai, Hubert de Givenchy, Arvid Carlsson, Barbara Bush, and Leon M. Lederman. After him are Roy J. Glauber, Stéphane Audran, Richard E. Taylor, Gudrun Burwitz, Bernard Lewis, and V. S. Naipaul.

Others Born in 1931

Go to all Rankings

Others Deceased in 2018

Go to all Rankings

In Italy

Among people born in Italy, Riccardo Giacconi ranks 902 out of 4,088Before him are Vincenzo Scamozzi (1548), Isabella Rossellini (1952), Giambattista della Porta (1535), Frances of Rome (1384), Giuseppe Tornatore (1956), and Julia (-76). After him are Mario Monti (1943), Alfonso II of Naples (1448), Vincenzo Gonzaga, Duke of Mantua (1562), Nicola Amati (1596), Ludovico Einaudi (1955), and Constantius Gallus (325).


Among astronomers born in Italy, Riccardo Giacconi ranks 7Before him are Galileo Galilei (1564), Giordano Bruno (1548), Giovanni Domenico Cassini (1625), Giuseppe Piazzi (1746), Giovanni Schiaparelli (1835), and Paolo dal Pozzo Toscanelli (1397). After him are Girolamo Fracastoro (1476), Angelo Secchi (1818), Annibale de Gasparis (1819), Giovanni Battista Riccioli (1598), Luigi Ferdinando Marsili (1658), and Margherita Hack (1922).