Small jets of gas under 10,000 km long, usually seen as a mass of tiny brighter spike-like features at the limb or as tiny darker spikes coming out of network elements, but are not usually seen over bright plage.
Fine, jet-like narrow columns of solar material found in the chromosphere that ascend into the corona
Sharp, pricker-like spikes on the underside of the foot of eagles and ospreys, which help the birds get a firm grasp on slippery fish.
Short-lived (lifetime from rising to falling is about 15 minutes) jets vertical to the solar surface that are several thousand kilometers long and about 1 kilometer thick. The birth rate is comparable to granules and there are hundreds of thousands of spicules on the Sun. [Reference: Zirin: The Solar Atmosphere_, pg. 219, 1966.
Spicules are very bright spikes that extend from the Sun into the chromosphere.
The grass-like patterns of gas seen in the solar atmosphere.
are short, sharp spines on osprey's feet. Spicules help osprey hold onto slippery fish, their favorite prey.