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: When a [[White Dwarf|white dwarf]] [[Radiation|radiate]]s its [[Thermal Energy Store|thermal energy]] it gets darker and darker until it stops [[radiation|radiating]] [[light]] and becomes a '''black dwarf'''.
: There are no '''black dwarves''' in the [[universe]] yet because the [[universe]] hasn't been around long enough for [[White Dwarf|white dwarves]] to have cooled down sufficiently.
: A '''black dwarf''' is a cold, [[density|dense]] ball of mostly [[IronCarbon]] around the size of [[planet]] [[Earth]]. ===References=======AQA====:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Black dwarf stars, page 252, GCSE Physics, Hodder, AQA '']:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Black dwarf, page 284, GCSE Physics; Student Book, Collins, AQA '']:[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac33 ''Black dwarfs, page 100, GCSE Physics; The Revision Guide, CGP, AQA '']:[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Black dwarfs, page 234, GCSE Physics; Third Edition, Oxford University Press, AQA '']:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Black dwarfs, pages 318, 319, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']