Related topics: species

Astronomers investigate pulsar wind nebula DA 495

Astronomers have carried out a multiwavelength investigation of a pulsar wind nebula (PWN), designated DA 495, to unveil its mysterious physical nature. Results of the study, based on observations using HAWC and VERITAS ground-based ...

Meet Callichimaera perplexa, the platypus of crabs

The crab family just got a bunch of new cousins—including a 95-million-year-old chimera species that will force scientists to rethink the definition of a crab.

'Hide or get eaten,' urine chemicals tell mud crabs

Psssst, mud crabs, time to hide because blue crabs are coming to eat you! That's the warning the prey get from the predators' urine when it spikes with high concentrations of two chemicals, which researchers have identified ...

A complex logic circuit made from bacterial genes

(Phys.org)—By force of habit we tend to assume computers are made of silicon, but there is actually no necessary connection between the machine and the material. All that an engineer needs to do to make a computer is to ...

Astronomers discover a new black hole in our galaxy

(Phys.org)—NASA's Swift satellite recently detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galaxy. The outburst, produced by a rare X-ray nova, announced the presence of a previously ...

Scientists work up a crab-powered computer

(Phys.org) -- A team of scientists from Japan and England have hit the high mark in exploring and testing unconventional forms of computation. They have built and tested a computer using crabs. This is a computer in which ...

Japanese researchers turn a crab shell transparent

A group of researchers working out of Kyoto University in Japan have successfully transformed a normal crab into one that is transparent. As they describe in their paper published in the British Royal Society of Chemistry ...

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Crab

True crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (Greek: βραχύς / brachys = short, οὐρά / οura = tail), or where the reduced abdomen is entirely hidden under the thorax. Many other animals with similar names – such as hermit crabs, king crabs, porcelain crabs, horseshoe crabs and crab lice – are not true crabs.

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