Astronomy
Astronomy reveals the scale and structure of the cosmos. This forum covers galaxies, exoplanet discoveries, black holes, dark energy, stellar evolution, space telescopes and the ongoing quest to understand what lies beyond the observable universe.
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The Observable Universe: What Lies Beyond the Cosmic Horizon?
When you look up at the night sky you are seeing a tiny fraction of what exists. The observable universe, the portion of the cosmos from which light h...
Read MoreAre We Alone? The Search for Extraterrestrial Intelligence
The question of whether we are alone in the universe is one of the oldest questions humanity has asked and one of the few that could be definitively a...
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