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About: Louis Niesten     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Whole100003553, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: Thingpersonyago:WikicatBelgianAstronomersyago:WikicatBelgianScientistsyago:Astronomer109818343yago:CausalAgent100007347yago:LivingThing100004258yago:Object100002684yago:Organism100004475yago:Person100007846yago:PhysicalEntity100001930yago:Physicist110428004yago:YagoLegalActoryago:YagoLegalActorGeoyago:Scientist110560637yago:Whole100003553 New Facet based on Instances of this Class

Louis Niesten (1844–1920) was a Belgian astronomer working at the . In 1877 he observed Mars and created a detailed map of its surface features. He organized an expedition to Santiago de Chile to observe the Venus transit the Sun in 1882. A second Belgian expedition (led by Jean-Charles Houzeau) travelled to San Antonio, Texas to determine the planet's parallax during the same transit. Both parties used a specially designed heliometer for this purpose. A crater on Mars was named in his honor.