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Two brothers mummies

MAMMA’S BOYS  Ancient Egyptian mummies known as the Two Brothers, found in these coffins, had the same mother but different fathers, DNA evidence indicates.

OLDEST MOTH SCALE  A tiny insect scale from an ancient lagoon (left) may be one of the earliest fossil signs of  the evolutionary branch of moths and butterflies. Comparisons with modern scales (right) identified it.

illustration of SEXTANT

SPACE PLACE  NASA’s SEXTANT experiment demonstrated a stellar version of GPS, finding the experiment’s location with an apparatus consisting of 52 X-ray telescopes (illustrated) on the International Space Station.

dead stars illustration

TRIPLE THREAT  A threesome of dead stars has allowed a new test of a tenet of Einstein’s theory of gravity. The trio includes a pulsar (illustrated, with bands of electromagnetic radiation in blue) in orbit with a nearby white dwarf. A second white dwarf orbits farther afield (red, upper right).



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