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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:  January 2015 Featured Blog Post The Night Sky:  January 2015 The Night Sky: January 2015

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

Recently Updated
The Night Sky: January 2015 Last Updated on 2014-12-31 20:53:26 The Night Sky in January 2015 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases Full "Wolf Moon" on the 4th               New Moon on the 20th Stars and Constellations For denizens of the Northern Hemisphere, January is the first full month of winter and it usually delivers the coldest temperatures of the year, particularly on clear nights. But those clear nights also serve up views of the spectacular winter star patterns during the later evening hours. Before the winter stars are permitted to parade onto the center stage of the heavens, however, a few remnants of autumn and even of summer nights have yet to bow and depart from that stage. For instance, the stars which form the Summer Triangle – Altair, Vega, and Deneb – can still be glimpsed in... More »
The Night Sky: December 2014 Last Updated on 2014-11-30 21:21:14 The Night Sky in December 2014 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases Full "Moon before Yule" on the 6th               New Moon on the 21st Stars and Constellations The Sun’s apparent annual path in the sky in December takes it through the southernmost portion of the zodiac. As the month begins, the Sun has just entered (on November 30th) the unofficial 13th zodiac constellation, and is situated just north of Antares in Scorpius. During the next two and a half weeks, the Sun travels across southern Ophiuchus, and on the 18th crosses the constellation border into Sagittarius. A little over three days later, on December 22nd at 12:30 am EST, the Sun reaches its southernmost position in western Sagittarius, marking the official end of autumn... More »
The Night Sky: November 2014 Last Updated on 2014-10-31 23:51:35 The Night Sky in November 2014 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon’s Phases Full "Frost Moon" on the 6th                    New Moon on the 22nd Stars and Constellations November is a fine month for stargazing, since on clear nights one can view not only the usual autumn star groups but also a few remaining summer groups, such as the summer triangle of Vega, Deneb, and Altair high in the west at dusk. Once our clocks have been set back to Standard Time, coupled with darkness falling progressively earlier each night as autumn progresses toward winter, stargazing becomes possible as early as 5 pm by the end of the month. The signature autumn constellation, the Great Square of Pegasus, consisting of four stars, Markab, Scheat,... More »
The Night Sky: October 2014 Last Updated on 2014-10-03 16:57:53 The Night Sky in October 2014 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon’s Phases Full "Hunter's Moon" on the 8th                    New Moon on the 24th Stars and Constellations October is a month of change. It is the first full month of autumn, with leaves beginning to turn color from green to yellow, orange, or red, and then falling to the ground. Average daytime and nighttime temperatures become much cooler toward the end of the month than they are at the beginning. And in the sky the stars of autumn are in full splendor late on clear October nights. Nightfall comes noticeably earlier than it did back in September – the Sun sets before 6:30 pm in mid-October – and so at this time of year stargazing can begin... More »
The Night Sky: September 2014 Last Updated on 2014-08-29 17:36:33 The Night Sky in September 2014 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon’s Phases Full "Harvest Moon" on the 8th          New Moon on the 24th Stars and Constellations The Autumnal Equinox occurs on September 22nd at 10:29 pm, marking the official start of autumn in the Northern Hemisphere. At this time (and again in March) the Earth's axis is tilted neither toward nor away from the Sun, and so the durations of day and night are equal at 12 hours each; thereafter the duration of darkness dominates over daylight until the Spring Equinox next March. The formal arrival of autumn notwithstanding, the majority of summer stars and even a few spring stars are still well placed for viewing during the early evening hours. The brightest of these is orange-colored Artcurus in the... More »