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Deep-Space Photos: Hubble's Greatest Hits
Space Spider
The Tarantula Nebula is a
spectacular formation named for its spidery shape. Home to half a million young
stars, it is 170,000 light years from Earth, and in fact lies outside of the
Milky Way altogether. It is instead part of the Large Magellanic Cloud, a small,
satellite galaxy that circles our own.
Old Age Home
Messier 9 is a spherical
formation that contains about a quarter of a million stars, located near the
center of our galaxy. If the Tarantula Nebula is a stellar nursery, Messier 9 is
a retirement home. Its stars are up to 10 billion years old—twice as old as our
own sun.
E.T. Lives Here?
You can call this galaxy
NGC 2683 if you want, but even astronomers refer to it simply as the UFO Galaxy
because of its flying-saucer shape. That resemblance, however, is a function
merely of the edge-on view we get of it. If you could soar above the UFO, it
would reveal itself to be a spiral galaxy like the Milky
Way.
Stellar Spotlight
Messier 70 is a globular
cluster like Messier 9, though its stars are packed more tightly. The denser a
cluster the brighter it is, and Messier 70 is thus easy for backyard astronomers
to spot. Indeed, if anything, it will likely get brighter over the course of
cosmic time, since it has experienced what's known as a core collapse, causing
even more stars to huddle near its center.
Inferno
The Carina Nebula is a huge and
exceedingly hot mass of stars located 7,500 light years from Earth. Outflowing
stellar wind and blistering ultraviolet radiation roil the primal gas cloud that
gave birth to the stars, making the nebula a beautiful thing to look at—but from
a very safe distance
Pas de Deux
A delicate cosmic dance is
taking place between two galaxies known together as ARP 273. The larger galaxy
is an off-kilter spiral, suggesting that the smaller one has actually passed
through it. Given the titanic forces that can be released when galaxies merge,
these two are lucky to be in the healthy shape they are.
Star Storm
Sagittarius never looked like
this. A two-lobed nebula in the heart of the constellation, it lies some 3,000
light years from Earth and is home to the hottest star ever recorded. The
nebula's powerful stellar winds send gas streaming 100 billion kilometers (62
billion miles) away, and its intense heat generates its brilliant
light
Dueling Galaxies
About 300 million light
years from Earth, twin galaxies face off in the constellation Coma Berenices.
The galaxies' dynamic look is belied by their timid nickname; they are known as
"The Mice" because of their long, glowing tails.
More Than a Caterpillar
A cosmic butterfly
hovers in a lightly populated region of the Milky Way, 2,000 light years from
Earth. Known as Sharpless 2-106, it gets its roughly symmetrical shape from
outrushing heat streaming into a cold environment.
Dark Matter and Dark Energy
The collection
of photos taken by the Hubble includes some of the most detailed photographs
ever taken of the things in our universe. In the 20 years since its launch, the
Hubble has made close to 100 million images, confirming the existence of black
holes, exoplanets, supernovae, nebulae, proplyds, and more recently, the
existence of dark matter and energy.
Pluto
Taken in 2002 and 2003, this is the
most detailed and highest resolution image of the entire surface of the dwarf
planet Pluto, a member of the population of bodies that
reside in a part of our Solar System known as the Kuiper Belt. It is believed
that the methane on Pluto's surface is broken up by the ultraviolet radiation
from the sun, leaving behind a dark, carbon-rich residue.
V838 Monocerotis
In the beginning of 2002, a
dull star floating some 20,000 light-years away from the sun, in the
constellation Monceros, experienced a major outburst that threw illuminating
dust or 'light echos' into space, temporarily making it the brightest star in
the Milky Way galaxy. Since its explosion, this mysterious star's apparent
brightness has changed to mere obscurity.
Antennae Galaxies
Approximately 500 years
ago, two galaxies collided together to form the Antennae galaxies in the
constellation Corvus. They are the nearest and youngest example of galaxies
fusing together to form what astronomers call interacting galaxies. In this
process, billions of stars and star clusters are
formed.
Centaurus A
By looking deep into space, the
Hubble has been able to photograph the past. Incredibly, with the help of
Hubble, astronomers have been able to see what the universe looked like 600
million years after the Big Bang. It is believed that the firestorm of starbirth
along the dark dust rift of Centaurus A is a result of a violent collision. Over
100 star formations have been identified here, mostly young stars in blue. The
older, more evolved stars reside in the bulge of the galaxy, which also contains
a super massive black hole at its center that is swallowing up a spiral galaxy
containing millions of stars.
Crab Nebula
In 1054 AD, Chinese astronomers
witnessed a stellar explosion in the constellation Taurus. one thousand years
later, the tattered remnants of the super dense neutron star's explosion, also
known as a supernova, are still visible, sweeping up gas as they expand at a
rate of 1,500 kilometers per second and rotating about 30 times per
second
Butterfly Nebula
Also known as the Bug
Nebula, the butterfly-shaped nebula consists of heated gas made up of oxygen and
nitrogen, the whole of which tears through space at speeds in excess of 60,000
miles an hour. The dying star in the center is not unlike our sun.
Saturn Aurora
A large amount of solar wind
activity from the sun creates a bright aurora around the south pole of the
planet Saturn, rising more than a thousand miles above its cloud
tops.
Jupiter's Moon
In 1610, the Italian
astronomer Galileo Galilei observed Jupiter and four of its largest moons. The
one called Io, (center) is the most geologically active in our Solar System, due
to its many volcanoes. Although it appears to be skimming the planet's cloud
tops, Io is actually 310,000 miles from the surface of Jupiter. The black dot to
right center is the moon's shadow. It takes Io just 42.5 hours to revolve once
around Jupiter
Eagle Nebula
The Hubble orbits at around 370
miles above earth. Unlike previous telescopes, it can make digital photographs
using light visible to the naked eye. And since it orbits above the earth's
atmosphere, its photos are not obscured by smog, haze or light. For Jeff Hester,
the astronomer responsible for this photo of the Eagle Nebula, taken just a few
years after the telescope's first service mission, the image represents "the
recovery of Hubble and the dreams that had originally accompanied its
launch."
Horsehead Nebula
Located approximately
1,500 light-years from Earth in the constellation Orion, this dark nebula is one
of the most photographed and identifiable nebulae; its cloud dust and gases form
what appears to be a horsehead in the night sky.
Deep Field View
In 1995, the telescope
peered into a tiny spot in the sky for ten days, which surprisingly revealed the
existence of at least 10,000 galaxies, some billions of light years away. This
is the deepest visible light image ever made.
Black Hole
On April 24, 1990, the telescope
named after the great astronomer Edwin
Hubble burst through
earth's atmosphere and it has been taking photos of the edges of the known
Universe ever since. Shortly after its launch, the Hubble snapped a photo of NGC
4261, an elliptical galaxy in the Virgo Cluster. Although the telescope had a
flawed mirror at the time, astronomers nevertheless were able to detect a super
massive black hole at least half a billion times larger than the sun at the
center of this
galaxy.
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- 현재글Deep-Space Photos: Hubble's Greatest Hits