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Letters

Bull’s-eye targeted On the picture in “Galactic bull’s-eye” (SN: 9/24/11, p. 10), I am quite puzzled. Do my eyes deceive me, or is there another bull’s-eye galaxy behind the first, located at the 1 o’clock position? How is this possible? Are these strange objects magically clustered along some line pointing towards us? Jeff Brewer, Newton […]

Science Past from the issue of November 4, 1961

ARTIFICIAL HEART VALVE — A previously hopeless condition of the heart — a defective heart valve — can now be corrected by successful surgery, it was reported at the American Heart Association meeting in Miami Beach, Fla. Many of the 500 gravely ill patients described by three teams of surgeons who did partial or total […]

Science Future for November 5, 2011

November 15 The DuPont Challenge science essay competition opens for entries.