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Cosmos Portal

Welcome to the Cosmos Portal

The Cosmos Portal  is a gateway on the Web to astronomy and space science. We invite astronomy professionals to publish articles, blogs, news items, image galleries, videos, class notes, lectures, powerpoint presentations, links to other high quality websites or other educational material.   LEARN MORE »

In parallel amateur astronomy organizations and amateur astronomers and telescope makers are invited to start websites in the Community Sites.   LEARN MORE »

TOPIC OF THE WEEK:
GALAXIES

  • Curiosity Rover Featured News Article Curiosity Rover Curiosity Rover

    The Curiosity Rover is designed to examine Martian rocks and soils. Two instruments on its arm can study rocks up close, a drill can collect sample material and a scoop can... More »

  • International Space Station Featured Article International Space Station International Space Station

    The goals of the International Space Station (ISS) are to establish a permanent habitable residence and laboratory for science and research, and to maintain and support a human... More »

  • XMM-Newton Featured Article XMM-Newton XMM-Newton

    The European Space Agency's X-ray Multi-Mirror satellite is the most powerful X-ray telescope ever placed in orbit. Scientists are sure the mission will help solve many cosmic... More »

  • 'We Are All Connected' Featured Video 'We Are All Connected'

    "We Are All Connected" was made from sampling Carl Sagan's Cosmos, The History Channel's Universe series, Richard Feynman's 1983 interviews, Neil deGrasse Tyson's... More »

  • The Night Sky:  July 2015 Featured Blog Post The Night Sky:  July 2015 The Night Sky: July 2015

    The Night Sky in July 2015 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases Full "Thunder Moon" on the... More »

Recently Updated
The Night Sky: July 2015 Last Updated on 2015-06-25 18:50:18 The Night Sky in July 2015 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases Full "Thunder Moon" on the 1st         New Moon on the 15th          Full "Blue Moon" on the 31st               Stars and Constellations As June transitions into July, most of the spring stars are fading into the twilight, not to return to the evening sky until early in 2016. Blue-white Regulus, the brightest star in the constellation Leo, is sinking toward the western horizon in early evening and sets around 10 pm in mid-July. Of similar color but slightly brighter is Spica, in Virgo, which sets in the southwest around midnight. Yellow-orange Arcturus, in Boötes the Herdsman, stands high... More »
The Night Sky: June 2015 Last Updated on 2015-05-29 18:14:06 The Night Sky in June 2015 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases Full "Strawberry Moon" on the 2nd          New Moon on the 16th Stars and Constellations The stars of spring shine prominently as night falls on warm June evenings, and the first of the spring stars to emerge from the evening twilight is Arcturus, the night sky's fourth brightest star, in the constellation of Boötes, the Herdsman. Arcturus has a distinct yellow-orange tinge, and by around 9 pm EDT lies high in the south. Also easily found is bluish-white Regulus in the constellation Leo, the Lion. Regulus stands high in the southwest in early evening, and sets around midnight. (This year the brilliant planet Jupiter lies to Regulus's right.) Spica, a star which possesses a similar bluish-white... More »
The Night Sky: May 2015 Last Updated on 2015-05-04 15:17:45 The Night Sky in May 2015 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases Full "Flower Moon" on the 3rd              New Moon on the 18th Stars and Constellations As darkness falls on May evenings, outdoor temperatures become pleasantly cool and the air is perfumed with the scent of newly sprung blossoms of lilac and viburnum. Although the first bright stars do not emerge from the evening twilight until around 8:30 or 9 pm, the wait is worth it. As darkness envelopes the sky in early May, try to catch a last glimpse of some of the familiar bright stars of winter – Aldebaran, Rigel, Betelgeuse, Sirius, and Procyon – before they vanish into the dusk, not to reappear in the evening sky until next autumn. Pollux, Castor, and Capella are setting in the... More »
The Night Sky: April 2015 Last Updated on 2015-04-02 14:30:18 The Night Sky in April 2015 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases Full "Egg Moon" on the 4th               New Moon on the 18th Stars and Constellations As April begins, we find that the days are getting noticeably longer, and at night the beautiful stars of winter are slowly vanishing into the evening twilight. Sirius, the brightest star of all in the night sky, is now setting in the southwest, not to reappear until late next autumn. Aldebaran, Betelgeuse, and Rigel are all getting low in the west, followed by Procyon. Pollux and Castor are still high in the south-southwest, to Orion’s upper left, while Capella is high in the northwest; all three of these stars will remain visible until early June. As the stars of winter are fading into the... More »
The Night Sky: March 2015 Last Updated on 2015-02-27 18:44:03 The Night Sky in March 2015 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases Full "Worm Moon" or "Sap Moon" on the 5th               New Moon on the 20th Stars and Constellations The month of March heralds the transition between the seasons of winter and spring – "in like a lion, out like a lamb." This change becomes apparent in the star patterns in the night sky as well, for the constellations of winter will over the next several weeks be fading into the evening twilight, to be replaced by the generally less spectacular groups of spring. As March opens, Aldebaran in Taurus and the compact star cluster Pleiades are still on display high in the southwest. Just west of overhead is Capella in Auriga, and Betelgeuse and Rigel in Orion are... More »