Universe

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Ask Ethan: Could Gravitational Waves Ever Cause Damage On Earth? Black hole mergers are some of the most energetic events in the Universe. Could the gravitational waves they produce ever harm us? Ethan Siegel9 min read

These 4 Pieces Of Evidence Have Already Taken Us Beyond The Big Bang Sure, cosmic inflation has its detractors. But it also has something no alternative possesses: predictions and tests. Ethan Siegel9 min read

These 22 Pictures Are The Perfect Farewell To NASA’s Spitzer Space Telescope One of NASA’s original great observatories, Spitzer showed us the infrared Universe as never before. Ethan Siegel4 min read

Flaremageddon: How Satellite Mega-Constellations Could Create A New Natural… With tens of thousands of satellites requiring AI-control to avoid collisions, a single solar flare could everything. Ethan Siegel8 min read

Ask Ethan: Does Dark Energy Gravitate? If all forms of energy experience gravitation, then why does dark energy make the expansion accelerate instead of slow down? Ethan Siegel8 min read

This Is Why Betelgeuse (Probably) Isn’t About To Explode Despite its changing shape and its unprecedented dimming, a supernova this year, decade, or even century is highly unlikely. Ethan Siegel8 min read