Thanks to observations by telescopes such as Hubble, we can estimate that there are over one hundred billion galaxies in our universe – and they’re just the ones we could see. So, by knowing the proportion of the sky that the grain of sand is covering, we can estimate the number of galaxies in that area.
Galaxies are huge swirling masses of stars, dust, and dark matter, and each galaxy can contain anywhere from 10 million stars (for a dwarf galaxy) to a thousand billion stars (for a giant galaxy). So even if your grain of sand was hiding only dwarf galaxies, it would still cover around a hundred billion stars!
On this day in 1884, civil rights pioneer Eleanor Roosevelt, niece of President Theodore Roosevelt, was born in New York. She would later marry President Franklin Roosevelt, her fifth cousin, and become one of the most powerful women of her time serving as First Lady (1933-45), a United Nations diplomat, and humanitarian.
The Sierra Club and a growing coalition of local, regional and national allies announced yesterday the retirement of its 150th coal plant—a significant milestone in the ongoing campaign to move the country beyond coal no later than 2030. With the announcement that the Brayton Point Power Station in Massachusetts would retire by 2017, the campaign officially marked 150 coal plants that have announced plans to retire since 2010, spurring record increases in clean energy …
On this day in 1967, the guerrilla leader Ernesto “Che” Guevara de la Serna was executed by Sergeant Mario Teran after his capture by the Bolivian military. Regarded by many as a martyred hero, he was a key figure in the Cuban Revolution and remains a revolutionary icon.
Photo: Popularized cropped version of Guerrillero Heroico (“Heroic Guerrilla Fighter”), an iconic photo of Che Guevara at the funeral for the victims of the La Coubre explosion (Alberto Korda/Wikimedia Commons)
"In ancient times, all animals understood each other and used a common language. Raven was on a beach. He went underwater and traveled until he came upon a large village. The village was in another world. In the middle of the village was a large house with mostly women and children inside. The other houses were very large. On the upper level of one of the houses was a very nice looking lady. As Raven looked at her she became more beautiful. He could not take his eyes off her. A little boy ran by the fire. Raven called him over, asked who the woman was and told him he wanted to talk to her. The little boy replied that she was his sister. He told the boy to tell his sister that he liked her. The boy relayed the message and returned to tell Raven that his sister thought he was attractive too, and that he was the kindest visitor to come to the house and he seemed to be a sensible man. Raven then said that he wanted to marry her. The lady cried and told the boy that thought she would like to marry him she was ashamed of her body and that her face was her only beautiful feature. Raven replied that beauty is nothing, that man looks for inner beauty that radiates from the face. The boy relayed this to his sister and she married Raven soon thereafter."