EarthCARE satellite's solar wing expanded for testing

ESA's upcoming EarthCARE satellite mission has just taken a big stretch. Engineers have gently unfolded this new satellite's huge five-panel solar wing to test that it will deploy correctly once it is in space. The solar ...

Moths use ultrasound to defend against bats

While a clear night sky might seem quiet and peaceful to us, empty of everything but stars, this nocturnal world is filled with a high-pitched cacophony of sound just beyond our ability to hear. Bats pierce the shadows with ...

Aerodynamics of perching birds could inform aircraft design

If you have ever watched a bird land on a tree branch, you may have noticed that it rapidly pitches its wings upward at a high angle to execute a smooth landing. However, for some birds, they land by folding their wings as ...

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