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...de-excited by collision with another particle before a photon can be emitted spontaneously. Such low densities cannot be achieved on Earth which is why these lines are not observed in the laboratory. When they are observed astronomically, we can be sure that they have been produced in a region of extremely low density. They are prominent in the spectra of active galaxies...

...de Villiers, 2000). Autistic people with pronounced language problems are more likely to fail false belief tasks, possibly suggesting that language difficulties cause ToM difficulties rather than the other way round. With much greater awareness of literal-mindedness these days, organisations like the National Autistic Society advocate clear, straightforward language for...

...to create a system or chain of information, contacts and support’ (De Janasz et al., 2009, p. 328). This definition highlights the benefits of belonging to networks. They provide the three key ingredients that a returner needs when looking for a job or re-establishing a career – ‘information, contacts and support’. Returners often say that they don’t have any networks and it is true that it can be hard to keep ......