Thursday, March 6, 2014
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Thank you for understanding…..
Tuesday, March 4, 2014
As I always talk about other such as galaxy, nebula, sun, and
moon and other things. For today I want to talk about our own galaxy, Milky Way
Galaxy. The Milky Way galaxy is most significant to humans because it is home
sweet home. But when it comes down to it, our galaxy is a typical barred
spiral, much like billions of other galaxies in the universe. Let's take a look
at the Milky Way.
The Milky Way is a barred spiral galaxy, about 100,000
light-years across. Spiral galaxies make up about two-third of the galaxies in
the universe. Unlike a regular spiral, a barred spiral contains a bar across
its center region, and has two major arms. The Milky Way also contains two
significant minor arms, as well as two smaller spurs. One of the spurs, known
as the Orion Arm, contains the sun and the solar system. The Orion arm is
located between two major arms, Perseus and Sagittarius.
For the more information, visit this website….
http://www.space.com/19915-milky-way-galaxy.html
credited also to space.com.....
If before this I tell story about nebula, nebula has many
type such as Omega Nebula, Horsehead Nebula, Cat’s Eye Nebula, Crab Nebula and
other name too. However, today I want to talk about Crab Nebula…
Crab Nebula is the shattered remnant of a massive star that
ended its life in a supernova explosion. Nearly a thousand years old, the
supernova was noted in the constellation of Taurus by Chinese astronomers in
the year 1054 AD.
Image Credit: NASA/JPL-Caltech/R. Gehrz (University of Minnesota)
This view of the supernova remnant obtained by the Spitzer
Space Telescope shows an infrared view of this complex object. The blue-white
region traces the cloud of energetic electrons trapped within the star's
magnetic field, emitting so-called "synchrotron" radiation. The red
features follow the well-known filamentary structures that permeate this
nebula. Though they are known to contain hot gasses, their exact nature is
still a mystery that astronomers are examining.
The energetic cloud of electrons is driven by a rapidly
rotating neutron star, or pulsar, at its core. The nebula is about 6,500
light-years away from the Earth, and is 5 light-years across.
credited to NASA...
Today I want to talk about black hole…. It names itself show
how much effects it can cause…. Black hole is One of the most awe inspiring
phenomenon in space is the black hole. There were a few facts that I get… the
first fact a black hole is a place where the gravity well is so great that a
gravitational time dilation has occurred. This causes time to stop. This causes
an event horizon into which objects can fall or be pulled, but those objects
will never reappear. That is the basic definition according to Einstein’s
theory of general relativity.
The second fact…
There is no limit to how small or how large a black hole can
be. The size and mass of a black hole are directly related. The more massive a
black hole is then the more space it takes up. In fact, the Schwarzschild
radius (the radius of the event horizon of a black hole) and the mass are
directly proportional to one another. Therefore, if one black hole weighs ten
times as much as another, its radius is ten times as large.
The third fact…
The nearest black hole is 1,600 light years away. That is
about 16 quadrillion kilometers for Earth.
The rest of the facts, you can surf it at...
http://www.universetoday.com/46687/black-hole-facts/
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