Duong Dao

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A New Hypothesis That Challenges Einstein's Physics Could Soon Be Put to The Test

Is the speed of light really a constant?<p>The speed of light in a vacuum, or <i>c</i>, is pretty much the most fundamental constant in physics – and according …

Physics

High-Speed Electrons Have Been Spotted Outside Earth's Magnetic Field, And NASA Can't Explain It

So fast, they break current physics models.<p>In the region of space just outside Earth’s magnetic field, NASA has detected electrons that are being …

Physics

Chasing a Totally Unattainable Freedom

James Gleick went looking for a way to time travel. What he found was confounding.<p>Everyone understands time, and no one knows how it works. And that …

Physics

Stunning new theory of gravity suggests there's no such thing as dark matter

A new theory of gravity explains the way galaxies rotate without the need for the theoretical presence of dark matter, according to a renowned expert …

Dark Matter

When Was the First Light in the Universe?

The speed of light gives us an amazing tool for studying the Universe. Because light only travels a mere 300,000 kilometers per second, when we see …

Record Supermoon and 9 More Can't-Miss Sky Events in November

Get ready to see lunar pairings, meteor showers, and more this month.<p>The coming month brings the roaring lion of meteor displays, dazzling planets, and plenty more reasons to look up at the night sky. You’ll even have the chance to catch the most impressive supermoon in nearly seven decades.<p>So dust …