... Lying just at the limit of human perception is a picturesque starfield containing one of the larger open clusters on the northern sky. Spanning an angle larger than the Moon, M39's relatively few stars lie only about 800 light years distant toward the constellation of Cygnus. A Prominent Solar Prominence from SOHO . ... Stars and the Bubble Nebula . ... Look up into the sky tonight and without a telescope or binoculars you might have a view like this one of Moon, planets and stars. ...