یک مقدار متنابهی از گاز و گرد و غبار
کیهانی در محدوده ای به قطر 70 سال نوری از ستارگان جوان مشاهده شده است.
RCW 79: Stars in a Bubble
Credit: E. Churchwell
(Univ.
Wisconsin-Madison) et al., JPL-Caltech, NASA
Explanation: A cosmic
bubble of
gas and dust, RCW 79 has grown to about 70 light-years in diameter,
blown by the winds and radiation from hot young stars. Infrared light
from the dust embedded
in the nebula is tinted red in this gorgeous false-color view from the Spitzer
Space Telescope. A good 17 thousand
light-years away in the grand southern constellation
Centaurus, the expanding nebula itself
has triggered star formation as it plows into the gas and dust
surrounding it. In fact, this penetrating infrared
picture reveals
groups of new stars as yellowish points scattered along the bubble's
edge. One remarkable group still lies within its own natal bubble at
about 7 o'clock (lower left), while another can be seen near the upper
gap at about 3 o'clock (right) from the bubble's center.
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