- Nov 27 Fri 2009 02:50
te'
- Nov 09 Mon 2009 02:18
Desin Principles - Balance
Object Name: Helix Nebula, NGC 7293
Object Description: Planetary Nebula
Position (J2000): R.A. 22h 29m 48.20s
Constellation: Aquarius
Distance: About 650 light-years (200 parsecs)
Dimensions: The image is roughly 27 arcminutes (5.1 light-years or 1.6 parsecs) across.
Image Credit: NASA, NOAO, ESA, the Hubble Helix Nebula Team, M. Meixner (STScI), and T.A. Rector (NRAO)
Dr. Arlene Wechezak
Anacortes, Washington, United States
Actinocyclus sp. diatom shell (180x)
- Nov 06 Fri 2009 13:53
October 31 2009‧Hermes
- Oct 24 Sat 2009 02:24
Party Cow Alive!
- Oct 10 Sat 2009 01:35
go!
10.05 台大
Design (1)
