Explanation: A bright nova was discovered Saturday that is currently visible to the unaided eye in southern skies. Nova Velorum 1999 was recorded near visual magnitude 3 independently by discoverers Peter Williams and Alan C. Gilmore (Mt. John U. Obs.), making it more luminous than many famous bright stars. The last nova this bright was Nova Cygni 1975, which peaked just brighter than magnitude 2. Nova Velorum 1999 is brighter now than the well-studied Nova Cygni 1992 ever appeared. A nova occurs when the surface of a white dwarf star undergoes a tremendous thermonuclear explosion, throwing off its outer layers. How the nova will appear over the next few weeks is uncertain, but the exploding debris will likely fade beyond detectability over the next few years. The above photograph of Nova Velorum 1999 was taken yesterday from Australia. The cross-hair like spikes that appear around it were caused by the photographing telescope and camera.

<<  Май  >> Пн Вт Ср Чт Пт Сб Вс           1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31             1995   1996   1997 1998   1999   2000 2001   2002   2003 2004   2005   2006 2007   2008   2009 2010   2011   2012 2013   2014   2015 2016   2017   2018 2019   2020   2021 2022   2023   2024

Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Публикации с ключевыми словами: nova - Nova Velorum 1999 Публикации со словами: nova - Nova Velorum 1999
См. также: Взрывы на белом карлике RS Змееносца Метеор из потока Персеиды, красные спрайты и Новая RS Змееносца Яркая Новая в Кассиопее Новая Киля 2018 Новая над Таиландом Новая Стрельца 2015 No 2, видимая невооруженным глазом Катаклизмический рассвет Все публикации на ту же тему >>