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Text reads, "Why stars twinkle on Earth but not in space," over a starry night sky with the edge of a planet at the bottom, highlighting what makes stars twinkle from our viewpoint.

Why stars twinkle on Earth but not in space?

The Universe EpisodesSep 12, 20258 min read

Why do stars twinkle? Discover how Earth’s atmosphere causes stellar scintillation, why planets don’t twinkle, and why stars shine steadily in space.

An astronaut in a spacesuit floats near a space station with the text "Why can't you see stars in space videos?" overlaid in bold yellow font, highlighting the mystery of stars in space.

Why you can’t see stars in space videos?

The Universe EpisodesSep 4, 20258 min read

Why you can’t see stars in space photos and videos explained: exposure, dynamic range, and NASA’s real science behind missing stars.

A person gazes up at a star-filled night sky, captivated by the question "How many stars in our galaxy?" shining boldly in yellow letters.

How many stars in our galaxy? The Milky Way’s Stellar Population

The Universe EpisodesSep 1, 20256 min read

How many stars in our galaxy? Learn why astronomers estimate 100–400 billion stars in the Milky Way, and how they calculate this number. How many stars in our galaxy? Podcast: Your browser does not support the audio element. Key Takeaways…

Illustration showing two nuclear bomb explosions, one over Earth and one in space, with the text “What happens if a nuclear bomb explodes in space?” in bold yellow letters.

What happens if a nuclear bomb explodes in space?

The Universe EpisodesAug 27, 20257 min read

What happens if a nuclear bomb explodes in space? Discover the truth about a nuclear explosion in space, its effects on humans, satellites, and survival.

Yellow text reads "Smallest planet ever discovered outside the solar system" over an illustration of the smallest planet seen near a large bright star.

Smallest Planet Ever Discovered Outside the Solar System

The Universe EpisodesAug 19, 20255 min read

Discover the smallest planet ever found, Kepler-37b, smaller than the Moon. Learn how tiny exoplanets reshape our understanding of the universe.

A graphic showing planets orbiting a star with text: "Smallest planet ever discovered outside the Solar System.

Smallest Planet Ever Discovered Outside the Solar System: Kepler-37b and Beyond

The Universe EpisodesAug 17, 20257 min read

Discover the smallest planet ever found outside the Solar System. From Kepler-37b to Draugr, explore tiny rocky worlds shaping astronomy.

At sunset, a person peers through a telescope as bold yellow text asks, "What is the Smallest Planet in our solar system?.

What Is the Smallest Planet in Our Solar System? (Mercury Facts & Secrets)

The Universe EpisodesAug 15, 20255 min read

Discover Mercury—the smallest planet in our solar system. Learn its size, secrets, orbit, and NASA mission discoveries in this complete guide.

Text graphic with a backdrop of outer space reads: "Galaxies in the Hercules–Corona Borealis Great Wall," highlighting this immense cosmic structure, with a small "The Universe Episodes" logo above.

How Many Galaxies Are Inside the Hercules–Corona Borealis Great Wall?

The Universe EpisodesAug 14, 20256 min read

Discover how astronomers estimate ~4 billion galaxies inside the Hercules–Corona Borealis Great Wall — the universe’s largest and most debated structure.

Star map with labeled Hercules and Corona Borealis constellations, featuring the text "Discovering the Hercules–Corona Borealis Great Wall." Explore the cosmic structure that inspired its name.

How Did Astronomers Discover the Hercules–Corona Borealis Great Wall?

The Universe EpisodesAug 13, 20257 min read

Discover how astronomers discovered the Hercules–Corona Borealis Great Wall using gamma-ray bursts, revealing the largest known structure in the universe.

Text over a background of stars and galaxies asks: "Is there anything bigger than the Hercules–Corona Borealis Great Wall?.

Is There Anything Bigger Than the Hercules–Corona Borealis Great Wall?

The Universe EpisodesAug 12, 20256 min read

Discover if anything is bigger than the Hercules–Corona Borealis Great Wall and explore the universe’s confirmed and mysterious mega-structures.

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