Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://www.sai.msu.su/apod/ap970314.html
Дата изменения: Unknown Дата индексирования: Tue Oct 2 10:06:46 2012 Кодировка: Поисковые слова: ngc 5128 |
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Explanation: Comet Hale-Bopp is living up to its expectations.
Besides the brightness of its coma,
a comet is typically remembered by the length of its tails.
As visible in the above picture
taken last week, Comet Hale-Bopp's
blue ion tail shows a dramatic extension,
with current reports
of about 20 degrees from dark locations. The comet's white dust
tail has so far shown a more modest extent but appears to be growing
significantly. Comet Hale-Bopp's closest approach to the Sun
occurs in about two weeks, and although it will not get much closer
to the Sun than does our Earth, Comet Hale-Bopp is likely to tell even more spectacular tails then.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry
Bonnell (USRA)
NASA Technical Rep.:
Jay Norris.
Specific rights apply.
A service of:
LHEA
at
NASA/
GSFC
&:
Michigan Tech. U.