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Galaxy Chronicle

Scientists Just Found the Same Swirl in Your Coffee Cup Happening All Over the Sun

A Half-Built Telescope Was Just Being Tested. It Found Something Nobody Had Ever Seen.

Planets & Solar System

Neptune’s Tiny Moons Contain a Mineral That Shouldn’t Exist Out There, and It’s Rewriting Their History

Our Galaxy’s Oldest Known Secret Just Got Uncovered, and It’s Named After Hercules

A 14-Year-Old Watched Her Hero Launch on TV. Today, She’s Making the Same Kind of History Herself.

Space Missions & Discoveries

149 Years Ago Today, a Foggy Washington Sky Nearly Cost Us a Discovery

A Physicist Spent 10 Years Measuring Gravity Without Being Allowed to Know His Own Results

Space Missions & Discoveries

There’s a Recording of Someone Falling in Love, a Billion Miles From Earth

Space Missions & Discoveries

NASA Destroyed a Perfectly Working Spacecraft on Purpose. Here’s Why That Was the Right Call.

Space Missions & Discoveries

The $10 Billion Telescope With 344 Ways to Die

Space Missions & Discoveries

The Photo That Needed an Earth-Sized Camera to Take

Space Missions & Discoveries

The Week Humanity Watched a Comet Die on Live Television

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Recent Stories

Supermoon: What It Really Is, Why It Happens, and When to Catch the Next One

What Is a Constellation? A Beginner’s Guide to the Sky’s 88 Star Patterns

How Many Planets Are There? The Real Answer Is Bigger Than Eight

What Is a Galaxy? A Simple Guide to the Great Islands of Stars

How Far Is the Sun From Earth? The 93-Million-Mile Answer and Why It Keeps Changing