Super-sharp radio 'eye' remeasuring the universe

Continent-wide telescope extends cosmic 'yardstick' three times farther into universe

Using the super-sharp radio "vision" of astronomy's most precise telescope, scientists have extended a directly-measured "yardstick" three times farther into the cosmos than ever before, an achievement with important implications for numerous areas of astrophysics, including determining the nature of Dark Energy, which constitutes 70 percent of the Universe. The continent-wide Very Long Baseline Array (VLBA) [...]

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