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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:  February 2016 Featured Blog Post The Night Sky:  February 2016 The Night Sky: February 2016

    The Night Sky in February 2016 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases New Moon on the... More »

Recently Updated
The Night Sky: February 2016 Last Updated on 2016-01-31 00:18:43 The Night Sky in February 2016 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases New Moon on the 8th                   Full "Snow Moon" on the 22nd Stars and Constellations On cold, clear February nights the stars and constellations of winter seem to be sprinkled across the night sky like brilliant ice crystals. Nearly overhead by 8 pm is Auriga, the Charioteer, with the bright yellow star Capella as its "eye." Just south of Auriga is Taurus, the Bull, with its bright orange star Aldebaran and the Pleiades, or Seven Sisters, star cluster. The Pleiades cluster actually contains about 500 stars, but, appropriately, only about seven are bright enough to be seen with the naked eye. The most recent distance determination puts the... More »
The Night Sky: January 2016 Last Updated on 2015-12-29 18:33:48 The Night Sky in January 2016 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases New Moon on the 9th                   Full "Wolf Moon" on the 23rd Stars and Constellations January is the ideal time to become acquainted with winter's brilliant constellations, which are now in their full splendor. First, though, you may want to catch a last look at the Summer Triangle stars Altair, Vega, and Deneb before they vanish below the northwestern horizon within a few hours after sunset in early January (roughly 7:30 pm, 8:30 pm, and 11:30 pm, respectively). A handful of the stars associated with autumn are still visible as well, including those of Cetus, the Whale, and the four stars which comprise the Great Square of Pegasus, which are now... More »
The Night Sky: December 2015 Last Updated on 2015-12-01 10:55:34 The Night Sky in December 2015 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases New Moon on the 11th           Full "Yule Moon" or "Long Nights Moon" on the 25th Stars and Constellations Winter officially commences in the Northern Hemisphere on December 22nd at 11:48 pm when the Sun reaches the southernmost position on the ecliptic, its apparent annual path through the zodiac constellations. Nevertheless, the trio of stars comprising the "summer" triangle – Vega, Deneb, and Altair – is still viewable low in the western sky shortly after it gets dark. But it is the stars of autumn which dominate the early evening sky, and one of the most familiar lights of autumn nights, the white star Fomalhaut, is now getting low in the southwest. Fomalhaut... More »
The Night Sky: November 2015 Last Updated on 2015-10-31 23:41:38 The Night Sky in November 2015 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases New Moon on the 11th              Full "Frost Moon" on the 25th Stars and Constellations November is one of those months that many people dread. While it is not the coldest month of the year at mid-northern latitudes (January usually holds that honor), the average decrease in the daily high temperature from November 1st to 30th is usually the most rapid (about 11 degrees Fahrenheit for Philadelphia, Pennsylvania, near where I live), and so it seems to get colder by the day. Add to that the fact that Daylight Savings Time ends at the beginning of November in most parts of the country (this year right away on the 1st), so the sky becomes darker one hour earlier in the evening, around... More »
The Night Sky: October 2015 Last Updated on 2015-09-30 10:49:16 The Night Sky in October 2015 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon's Phases New Moon on the 12th                      Full "Hunter's Moon" on the 27th Stars and Constellations The month of October, like its spring opposite, April, is regarded by many northern, middle-latitude observers as one of the most desirable months for sky watching. It is easy to see why: temperatures at these times of year are pleasantly cool, and the air is generally clear and relatively stable. One bright star that can be seen in the night sky in both October and April is Arcturus, fourth brightest star in the night sky. Although it is best viewed in late spring, Arcturus's high northern declination combined with earlier sunsets at... More »