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Federal judge rules she lacks authority to reinstate fired Yosemite ranger who flew trans pride flag Social Security update: Bipartisan bill proposed to plan major changes Passengers warned him about ...

The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young sun. It grew larger thanks to countless collisions between dust particles, asteroids, and other growing ...

The Center for Astrophysics and Space Astronomy (CASA) is dedicated to advancing our understanding of the Universe in which we live through observations, theory, and the development of ground-based ...