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These stars are among the top five brightest stars in the sky. When they appear low to the horizon and are shining through a thicker layer of haze, they can sometimes appear to splinter into different colors (called the scintillation effect). Thus, these normally white stars could appear red or green.
You can see Arcturus low on the northwest horizon around 10 p.m. Capella appears low in the northeast around the same time, while Sirius, the brightest of all stars, emerges in the southeast around 3 a.m.
Originally posted by Sorgmodig
I actually saw a twinkly, large star a couple of years ago. I was told by my grandfather that it was a sattelite.
I can't tell a star and a sattelite apart. They look the same to me.
This spectacular object, a dying star unraveling into space, is a favorite of amateur and professional astronomers alike. Spitzer has mapped the expansive outer structure of the six-light-year-wide nebula, and probed the inner region around the central dead star to reveal what appears to be a planetary system that survived the star's chaotic death throes.
This image is a composite showing ionized H-alpha (green) and O III (blue) gases from the Hubble Space Telescope, and molecular hydrogen (red) from Spitzer observations at 4.5 and 8.0 microns.
Originally posted by Phage
reply to post by Heyyo_yoyo
Except that with an apparent magnitude of +13.5, the Helix Nebula is not visible to the naked eye.