Recent Astronomy Articles at Cosmic Pursuits

The Jellyfish Nebula

January 19, 2016 by Brian Ventrudo Filed Under: Astronomy Images and Video

The Jellyfish Nebula, also called IC 443, is the sprawling remnant of a massive star that exploded as a supernova some 3,000 to 30,000 years ago in a gas-strewn patch of the Milky Way in the constellation Gemini. As you can see in the above image by Jeff Johnson, the shock wave from the explosion produced the particularly intricate lacework of nebulosity that makes up the Jellyfish. The nebula, which is about 5,000 light years away, is adjacent to a rich region of star formation called Sharpless 249. [Read more…] about The Jellyfish Nebula

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The Hyades Star Cluster – The “Raining Stars”

January 13, 2016 by Brian Ventrudo Filed Under: Deep Sky

Orion's Belt points the way to the V-shaped Hyades star cluster as seen from the southern hemisphere. The bright star at one tip of the Hyades is Aldebaran, which is not a part of the cluster. (Credit: Luis Argerich from Flickr.com) — Orion’s Belt points the way to the V-shaped Hyades star cluster as seen from the southern hemisphere. The bright star at one tip of the Hyades is Aldebaran, which is not a part of the cluster. The bright object below the Hyades is Jupiter, which was in this part of the sky when the image was taken. (Credit: Luis Argerich from Flickr.com)

The famed V-shaped head of the constellation Taurus is dominated by a lovely collection of blue and orange stars of the Hyades star cluster. Often overshadowed by the smaller and more famous Pleiades, the Hyades are visible high in the northern sky this time of year. They’re visible from the southern hemisphere, too, perhaps 20° above the northern horizon just after sunset in South Africa, Australia, and New Zealand.

The Hyades have been known since antiquity. The cluster’s name comes from the Greek legend of the seven Hyads, the daughters of the titan Atlas and Aethra. Atlas was busy because he had seven more daughters by another wife, Pleione. These daughters were called the Pleiades. So by legend, the Pleiades and the Hyades are half-sisters. Unlike the Pleiades star cluster, the stars of the Hyades are not named after the sisters. And the Hyades contains some 20 stars visible to the naked eye; the Pleiades have just six [Read more…] about The Hyades Star Cluster – The “Raining Stars”

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The Moon Occults Aldebaran on January 19-20

January 13, 2016 by Brian Ventrudo Filed Under: Celestial Events

The visibility of the lunar occultation of the bright star Aldebaran on Jan. 19-20, 2016. Credit: Lunar-Occultations.com

The waxing gibbous Moon will pass in front of the bright star Aldebaran, the brightest star in the constellation Taurus, during the evening of January 19-20, 2016. The event will be visible for all of Canada and the continental U.S. as well as northwestern Europe (see map above). During this occultation, Aldebaran will dramatically disappear behind the darkened edge of the Moon. Then it will suddenly reappear nearly an hour later from behind the lit edge. Exact timing is highly dependent on location, but the event begins between 2h and 3h Universal Time on Jan. 20. You can look up the more precise timing for your location at the Lunar-Occultations.com website. The event is easily visible without optical aid, but a pair of binoculars or a small telescope give you a better view [Read more…] about The Moon Occults Aldebaran on January 19-20

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Venus and Saturn Meet in the Morning Sky

January 7, 2016 by Brian Ventrudo Filed Under: Solar System

Venus and Saturn move within 1/2 of a degree of each other on the morning of January 9, 2016. — Venus and Saturn move within 1/2 of a degree of each other in the southeastern predawn sky on the morning of January 9, 2016.

Look to the southeastern sky before dawn on January 9 to see Venus and Saturn make a close approach to each other before sunrise. Venus is the brighter of the two, about 60x brighter than Saturn. The two planets make their closest approach at about 4h Universal Time when they are just 1/10 of a degree apart. This timing favors observers in Europe and Africa. As dawn arrives in the Americas and Australia and New Zealand, the planets will be slightly farther apart but still quite striking. Binoculars will give a good view of the two planets, and a telescope at low-to-medium power will give an excellent view of the face of Venus, which is about 77% illuminated, and the rings and brightest moons of Saturn. [Read more…] about Venus and Saturn Meet in the Morning Sky

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The Dark Universe

January 7, 2016 by Brian Ventrudo Filed Under: Stargazing

A street view of the Rose Center for Earth and Space Science. The planetarium theater is located within the "Hayden Sphere" at left. — A street view of the Rose Center for Earth and Space Science. The planetarium theater is located within the “Hayden Sphere” at left.

It’s been too long since I’ve been in a good planetarium, but this past weekend I saw the splendid “Dark Universe” show at the Hayden Planetarium (pictured) in New York. With dazzling graphics, a lapidary script by Timothy Ferris and narration by Neil deGrasse Tyson, the movie summed up in style the most important discoveries in cosmology over the past 100 years. If you’re visiting NYC, skip an afternoon of shopping and go to the Hayden. It’s worth the trip.

Clip From “Dark Universe” | Hayden Planetarium, American Museum of Natural History from BillMoyers.com on Vimeo.

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