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Apollo 7 crew

THREE’S COMPANY  Twenty months after the deadly fire on Apollo 1, Apollo 7 and its crew (from left),  Donn F. Eisele, Walter M. Schirra, Jr. and Walter Cunningham, spent nearly 11 days in space, completing 163 orbits of Earth.

a photo of a face with two different eye colors

LAWS OF INHERITANCE  Mosaics, individuals whose cells are not all genetically identical, are among the topics discussed in a new book about heredity. Mosaicism can cause a person to have two different colored eyes.


The International Astronomical Union’s vote in 2006 to demote Pluto to dwarf planet status merely created “the illusion of scientific consensus,” according to a recent paper.

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