Spiders can’t fly.
But they can travel by air up to 1,000 miles.
This is called ballooning.
A spider releases a strand of web from its belly.
Then it flies, seemingly using the web as a sail.
But wind has nothing to do with it.
Spiders can detect electricity in the air.
The atmosphere is always charged.
On cloudy days, it can reach thousands of volts.
Ballooning spiders operate within this planetary electric field.
Their silk picks up a negative charge.
This repels the negative charges on the surfaces.
The force lifts them into the air.
This enables flight by electrostatic propulsion.
To detect electric fields, spiders use special hairs.
These sensory hairs are called trichobothria.
They’re located on spiders’ feet.
Just don’t tell your arachnophobic friends!

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