zorg.ch
7:06 Uhr
Events
Forum
Games
Wetten
Rezepte
Tauschbörse
Books
Space
User
Übersicht
Astronomy Picture of the Day
Celebrating Hubble With NGC 6751
Bild Note: 0
(0 Votes)
⏴ previous
Bild Upload von 18.02.2016 21:42
next ⏵
zorg.ch
#72002
by
[z]Barbara Harris
@
17.04.2005 00:00
- nach oben -
Celebrating Hubble With NGC 6751
Explanation:
Planetary nebulae
can
look simple,
round, and planet-like in small telescopes.
But images from the orbiting
Hubble Space Telescope
have become
well known for showing these fluorescent
gas shrouds
of dying Sun-like stars to possess a
staggering variety
of detailed
symmetries and shapes
.
This composite color Hubble
image of NGC 6751
is a beautiful example of a
classic planetary nebula with complex features.
It was selected in April of 2000, to commemorate the
tenth
anniversary
of Hubble in orbit.
The colors were chosen to represent the relative temperature of the
gas - blue, orange, and red indicating the hottest to coolest gas.
Winds and radiation from the intensely hot central
star
(140,000
degrees
Celsius
)
have apparently created the nebula's streamer-like features.
The nebula's
actual diameter is approximately 0.8 light-years
or about 600 times the size of our solar system.
NGC 6751 is 6,500 light-years distant in the high-flying constellation
Aquila
.
Credit & Copyright