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Cnidarians have specialized stinging cells called cnidocytes
The two bright stars are (left) Alpha Centauri and (right) Beta Centauri.
Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation.
Some ignition coils are electrically connected, called married (top figure), whereas others use ...
Vehicles equipped with onboard refueling vapor recovery usually have a reduced-size fill tube.
The illusory bands visible in this figure are often called Mach bands, although Mach used a ...