Did You Know?

Some black holes sing in B-flat.

The supermassive black hole at the center of the Perseus galaxy cluster emits pressure waves that translate to a B-flat note 57 octaves below middle C. This is the deepest known note in the universe, far too low for human ears to detect.

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There’s a galaxy that appears to be missing its dark matter.

The galaxy NGC 1052-DF4 appears to contain virtually no dark matter, challenging our understanding of galaxy formation. This...

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There’s a star that’s trapped inside a giant crystal.

At the center of the Cat's Eye Nebula, astronomers have discovered a dying star surrounded by a crystalline...

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Jupiter acts like a cosmic vacuum cleaner.

Jupiter's intense gravitational field helps protect Earth by attracting or deflecting many comets and asteroids that might otherwise...

Read more: Jupiter acts like a cosmic vacuum cleaner.