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Today's Astronomy

New Moon

May 21, 2025

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Dive into curated learning paths across the sciences and beyond.

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Featured Simulations

Learn by doing — experiment with real-time, interactive models.

Solar System Explorer

Explore planets, orbits and moons in 3D.

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Black Hole Simulator

Visualize spacetime distortion in real-time.

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Projectile Motion Lab

Experiment with angles, speed and gravity.

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Electricity Lab

Build circuits and learn electricity visually.

Interactive

Probability Sandbox

Understand probability through experiments.

Interactive

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Science Stories

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Today in Science

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Space Event

ISS will pass over the sky tonight at 8:32 PM

Look up and spot the International Space Station.

Did You Know?

A day on Venus is longer than its year!

Venus takes 243 Earth days to rotate once.

On This Day

In 1990, Hubble Space Telescope was launched.

Revolutionizing our view of the universe.

Number of the Day

Estimated number of atoms in the human body

Approximately 7 octillion atoms!

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Experiments at Home

Try these simple experiments with everyday materials.

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