Today’s Google Doodle celebrates the 105th birthday of astronomer Guillermo Haro, who discovered a new class of nebula and helped promote astronomical research in Mexico.
Haro, born on March 21, 1913, discovered a type of nebula now known as Herbig-Haro objects. These bright clouds form when jets of ionized gas from young stars collised with nearby clouds of gas and dust. Herbig-Haro objects are short-lived by astronomical standards; they last just a few thousand years, and they change dramatically over just a few years. Haro was one of the first to realize that these objects were the result of the cosmically violent process of star formation; astronomer George Herbig, working independently, came to the same conclusion at around the same time, so the two astronomers share the honor of the name.
And Haro also discovered a type of star, now called flare stars, which flares bightly across the whole electromagnetic spectrum for a few minutes at a time, on apparently random intervals. Today, astronomers believe that most flare stars are dim red dwarf stars, although there are some more massive exceptions, and their flares are high-intensity versions of solar flares, caused by changes in the stars’ magnetic fields. Our two nearest neighbors, Proxima Centauri and Barnard’s Star, are flare stars.
In addition to new classes of astronomical objects, Haro also discovered several planetary nebulae, a number of young variable stars called T Tauri stars, a supernova and ten novae, and a comet. He also spent much of his career composing a catalog of blue stars toward the north galactic pole and a list of blue galaxies.
When he wasn’t looking skyward, Haro advocated for astronomical research in Mexico, and in 1959 he became the first person from Mexico to be elected to the Royal Astronomical Society. He died on April 26, 1988.
Continue onto Forbes to read the complete article.