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| | | | | | | Revealing the invisible: Caroline and William Herschel
| Sir William Herschel discovered, in addition to the planet Uranus, many new nebulae, clusters of stars and binary stars. He was the first person to correctly describe the form of our Galaxy, the Milky Way. In 1800, the German-born British astronomer and musician described that the differently coloured filters through which he observed the Sun allowed different levels of heat to pass. He performed a simple experiment to study the
Credits: Royal Astronomical Observatory | |  |  | |
| | | | | | Caroline Herschel, sister of Sir William Herschel. Pioneer in her own right in intrared studies. | | | | |
| | | | | Herschel's telescope will collect infrared radiation from distant stars.
Image shows telescope, vessel containing liquid helium cryostat (narrow, middle part), and service module at the bottom.
Credits: ESA 2002/Medialab | | | | |
| | | | Last update: 18 June 2009 | |
| | More about... Herschel fact sheetISO overviewPlanck overviewRelated articles Observations: Seeing in infrared wavelengthsL2, the second Lagrangian PointThe infrared explorers
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