The Standard Model of particle physics suggests that particles interact with each other under the control of four forces. Finding the fifth force would be a significant step forward for physics.
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We may not have found the solar system’s ninth planet because it doesn’t exist.
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Its 5,000 mile-per-hour winds cause molten-rock showers.
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In December 2019, a previously unremarkable, distant galaxy began to glow brightly. Astronomers now understand why.
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Thinking about stars as living beings is not entirely unreasonable.
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What sets these signals apart is that they intermittently go through three very different states.
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Even stars that are too small to become black holes will gradually fade away.
Read more »Astrophysics:Physicists Have Been Searching for a Fundamental ‘Fifth Force’ for Decades. The Bennu Asteroid May Have Brought Them Closer to Finding..