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|death_date = {{death date and age|df=yes|1927|10|2|1859|2|19}} |work_institution = [[Royal Institute of Technology]] ...

...;10⁶ seconds = 15.9735 days – [[Half-life (element)|half life]] of [[vanadium]]-48 *1.54×10⁶ seconds = 17.81 days – half life of [[californium]]-253 ...

...ne method works for all objects and distances, so astronomers use a number of methods. ...within about a thousand [[parsec]]s). It is the larger distances which are the problem. Several methods rely on a '''standard candle''', which is an astro ...

[[File:Aspen-PopulusTremuloides-2001-09-27.jpg|thumb|220px|The trembling [[aspen]] in its autumn colours]] ...insiana on Syzygium hemilampra-Iluka.jpg|thumb|200px|...and this shows how the strangler fig grows]] ...