An Encounter with Pluto

An Encounter with Pluto

Reported by Scott MacNeill's Columns

UPDATE: The NASA New Horizons spacecraft successfully performed the Pluto flyby maneuver at 7:50 a.m. EDT on Tuesday, July 14th. During the flyby, New Horizons was in communications black out and phoned home as planned at 8:53 p.m. EDT on the same day, sig...
  • By: Scott MacNeill
  • On: Mon, 13 Jul 2015 12:56:34 EDT

Photo: Messier 17 - The Swan Nebula

Photo: Messier 17 - The Swan Nebula

From Gallery: Diffuse Nebula

Messier 17 is a huge H II star forming nebula in the constellation Sagittarius. Residing at just over 5,000 light years, M17 has a diameter of about 15 light years. Messier 17 is quite similar in composition and shape to the Orion Nebula, though when viewi...
  • By: Scott MacNeill
  • On: Wed, 1 Jul 2015 09:11:23 EDT

Messier 3 - Globular Cluster in Canes Venatici

Messier 3 - Globular Cluster in Canes Venatici

Reported by Glenn Chaple's Columns

As May gives way to June, backyard astronomers begin to anticipate the arrival of summer’s globular clusters, and with good reason. The globular-laden constellations Ophiuchus, Scorpius, and Sagittarius are beginning to show up in the early evening sky. ...
  • By: Glenn Chaple
  • On: Tue, 30 Jun 2015 08:59:40 EDT

Photo: 61 Cygni - Piazzi's Flying Star

Photo: 61 Cygni - Piazzi's Flying Star

From Gallery: Binary & Multi Star Systems

61 Cygni, found in the constellation Cygnus, resides at 11.4 light years distant and is a stunning binary star. This star system is comprised of two K-type stars that are gravitationally bound and orbiting a common barycenter every 659 years. Just barely n...
  • By: Scott MacNeill
  • On: Mon, 29 Jun 2015 10:09:38 EDT

Photo: Messier 22 - Globular Cluster in Sagittarius

Photo: Messier 22 - Globular Cluster in Sagittarius

From Gallery: Globular Clusters

Messier 22 is a huge globular star cluster residing at only 10,600 light years distant, making M22 one of the closer globular clusters to Earth. An elliptical globular cluster, M22 is near 100 light years in diameter. Messier 22 is one of the best summer t...
  • By: Scott MacNeill
  • On: Thu, 25 Jun 2015 21:27:48 EDT

Quasars: The Limits of the Universe

Quasars: The Limits of the Universe

Reported by John Weaver's Columns

Known now for only a little more than half a century, these mysterious objects have captivated and driven astronomers to explore further from Earth than ever before. Quasars are thought to be the violent centers of the earliest galaxies. Our own Milky Way ...
  • By: John Weaver
  • On: Wed, 17 Jun 2015 16:17:04 EDT