Astrobiology, also called exobiology, combines aspects of astronomy, biology, and geology in an interdisciplinary study of life in space. According to astrobiologists, the search for extraterrestrial life throughout the universe is governed by 6 basic parameters that determine whether an environment can support life: temperature, pressure, salinity, acidity, water availability, and oxygen content. Which 3 planetary bodies, located within our solar system, are best equipped to sustain life?
Ralph Waldo Emerson
Back in the day
The Belfast Agreement, also known as the Good Friday Agreement, was a major step in the Northern Ireland (NI) peace process. Signed by the British and Irish governments and endorsed by most of NI's political parties, it secured the commitment of all parties to peace and democracy, and it affirmed that the constitutional future of NI should be determined by the majority vote of its citizens. How did vague wording in some of the agreement's provisions help ensure its acceptance?
Born on a day like today
Max von Sydow is an award-winning Swedish actor who is known in particular for a number of film collaborations with his mentor, director Ingmar Bergman. Von Sydow honed his acting skills on both stage and screen in Scandinavia before moving to Los Angeles to star in Hollywood films. He was nominated for two Golden Globe Awards for his work in Hawaii and The Exorcist. In 2002, he had one of his largest commercial successes, co-starring with Tom Cruise in what Steven Spielberg film?