Download Cat`s EyE - Chandra X

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Geocentric model wikipedia, lookup

Circumstellar habitable zone wikipedia, lookup

Spitzer Space Telescope wikipedia, lookup

History of astronomy wikipedia, lookup

Cassiopeia (constellation) wikipedia, lookup

Hipparcos wikipedia, lookup

Theoretical astronomy wikipedia, lookup

Space Interferometry Mission wikipedia, lookup

Serpens wikipedia, lookup

International Ultraviolet Explorer wikipedia, lookup

Corona Australis wikipedia, lookup

Definition of planet wikipedia, lookup

Rare Earth hypothesis wikipedia, lookup

Panspermia wikipedia, lookup

Dwarf planet wikipedia, lookup

IAU definition of planet wikipedia, lookup

Perseus (constellation) wikipedia, lookup

Lyra wikipedia, lookup

Observational astronomy wikipedia, lookup

Astrobiology wikipedia, lookup

Stellar kinematics wikipedia, lookup

Orrery wikipedia, lookup

Formation and evolution of the Solar System wikipedia, lookup

R136a1 wikipedia, lookup

Ursa Minor wikipedia, lookup

Crab Nebula wikipedia, lookup

Cygnus (constellation) wikipedia, lookup

Stellar evolution wikipedia, lookup

Astronomical spectroscopy wikipedia, lookup

IK Pegasi wikipedia, lookup

Nebular hypothesis wikipedia, lookup

Corvus (constellation) wikipedia, lookup

Ursa Major wikipedia, lookup

Extraterrestrial life wikipedia, lookup

CoRoT wikipedia, lookup

Aquarius (constellation) wikipedia, lookup

Directed panspermia wikipedia, lookup

Star formation wikipedia, lookup

History of Solar System formation and evolution hypotheses wikipedia, lookup

Planetary habitability wikipedia, lookup

Orion Nebula wikipedia, lookup

Timeline of astronomy wikipedia, lookup

Transcript
Cat ’s Eye
WHO: The Cat’s Eye, officially known as NGC 6543,
is a so-called planetary nebula, a glowing shell of gas
and dust that forms when Sun-like stars die.
WHEN: Stars like the Sun live for billions of years,
but their phase as a planetary nebula lasts only a few
hundred thousand years.
WHAT: Planetary nebulas actually have nothing to do
with planets—the name was coined hundreds of years
ago because these objects looked like planets through
small optical telescopes. Rather, a planetary nebula is
a stage of life that our Sun will experience billions of
years from now (see illustration below).
HOW: The spectacular filamentary structures in planetary nebulas come from the outer layers that have
been shed by the dying star then sculpted by intense
radiation from the hot central star (bright white dot in
middle) that will eventually become a white dwarf.
WHY: It is important to understand the details of how
stars disperse elements made in their interiors. These
elements, such as carbon and nitrogen, could be crucial
for the formation of planets and the evolution of life.
More at: http://chandra.harvard.edu
WHERE: The Cat’s Eye is found 3,000 light years from
Earth in the middle of the constellation Draco, which
is Latin for “dragon.” Draco is found high in the
northern sky.
X-rays from
NASA’s Chandra
Stellar
Nursery
Optical data
from NASA’s Hubble
Stellar
Nursery
Illustration of Stellar Evolution Path
White Dwarf
Protostar
Sun-like Star
Red Giant
Planetary Nebula
Constellation Draco