Galaxy Chronicle

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

A supermoon is a full moon that lines up with the Moon's closest approach to Earth, making it look a little bigger and noticeably brighter than an ordinary full moon. At its best, a supermoon can appear up to 14% larger and about 30%...

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

A constellation is a group of stars that forms a recognizable pattern in the night sky, one we've given a name, usually after a mythological figure, animal, or object. There are 88 of them officially recognized, and together they map out the entire sky....
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Types of Stars: A Simple Guide to the Colors, Sizes, and Life Stages of Stars

Look up on a dark night and every star seems like the same little...

How Many Moons Does Uranus Have: The Ice Giant’s Cast of Literary Worlds

The Short Answer Uranus has 29 known moons. That count only recently ticked up, when...

How Many Moons Does Neptune Have: Meet Triton and the Ice Giant’s Strange Family

The Short Answer Neptune has 16 known moons. That's the current official count from NASA,...

The Life Cycle of a Star: From Stellar Nursery to Spectacular Death

The Short Answer A star is born inside a giant cloud of gas and dust,...

What Is a White Hole: The Bizarre Mirror Image of a Black Hole

The Short Answer A white hole is the theoretical opposite of a black hole. Where...

Why Do Stars Twinkle: The Simple Reason Behind the Night Sky’s Shimmer

The Short Answer Stars twinkle because of the Earth's atmosphere, not because of anything the...

How Far Is the Moon From Earth: The Real Distance and Why It Keeps Changing

The Short Answer On average, the Moon sits about 384,400 kilometres from Earth, which is...

How Much Does the Earth Weigh: The Mind-Bending Number and How We Measured It

The Short Answer The Earth has a mass of about 5.97 x 10^24 kilograms. Written...

When Will the Earth End: The Science Behind Our Planet’s Distant Future

The Short Answer The Earth isn't ending any time soon. There's no scientifically predicted doomsday...

How Many Earths Fit in Jupiter: Sizing Up the Solar System’s Biggest Planet

The Short Answer About 1,300 Earths could fit inside Jupiter. The king of the planets...

When Is the Next Solar Eclipse: Your Guide to the Ring of Fire and the Eclipse of the Century

The Short Answer The next solar eclipse is an annular "ring of fire" on February...

How Many Earths Fit in the Sun: Just How Big Our Star Really Is

The Short Answer About 1.3 million Earths could fit inside the Sun. That's the kind...

Latest articles

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

A supermoon is a full moon that lines up with the Moon's closest approach...

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

A constellation is a group of stars that forms a recognizable pattern in the...

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

There are eight planets in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn,...

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

A galaxy is an enormous collection of stars, gas, dust, and dark matter, all...