Hello..... my second entry....
in my last entry... i talk about i loves nature, investigation and so
on.... other than that, i loves about supernatural phenomenon that consists of
dark, mystery and night.... because of night also,, lead me to loves
about astronomy... in my opinion, astronomy is something universal that no one
in this world has explore it... that why some times, in my home, i really loves
to watch night scenery and moon.... for me, they just beautiful enough.... that
was a god creation and as human I'm very grateful of it.... i even remember
when i a little kid, i always thought that when i grow up i want to go other
space or planet.... now i think it back, it was quite stupid but because of
that thinking lead me to be more imaginative.... talking about astronomy, i
want to tell about Whirlpool Galaxy.... The Whirlpool
Galaxy, also known as Messier 51a, M51a,
or NGC 5194 is an interacting, grand-design spiral galaxy with a Seyfert 2 nucleus in the constellation Canes Venatici. Recently it was estimated to be 23 ± 4 million light-years from the Milky Way
Galaxy, but different methods
yield distances between 15 and 35 million light-years. Messier 51 is one of the
best known galaxies in the sky. The galaxy and its companion (NGC 5195) are easily observed by amateur
astronomers, and the two galaxies may
even be seen with binoculars. The Whirlpool
Galaxy is also a popular target for professional astronomers, who study it to
further understand galaxy structure (particularly structure associated with
the spiral arms) and
galaxy interactions. It was discovered by Charles Messier on 13
October 1773 and is designated as M51. Its companion galaxy, NGC 5195, was discovered in 1781 by Pierre Méchain. It was however not until
1845 that the Whirlpool became the first to be recognized as a spiral. This was
achieved by Lord Rosse employing a 72-inch (~1.83 m) reflecting telescope which he constructed at Birr Castle, Ireland.
Sometimes M51 is used to refer to the pair of galaxies, in which case the individual
galaxies may be referred to as M51A (NGC 5194) and M51B (NGC 5195).
In 2005
a supernova (SN 2005cs) was
observed in the Whirlpool Galaxy, peaking at apparent magnitude 14.
On 31 May
2011 a magnitude 13.5 type II supernova (SN 2011dh) was
detected in M51 at coordinates 13:30:05.08 +47:10:11.2.
hehe.... i
take it from Wikipedia... credit to it....
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