How to Find the Sagittarius Constellation

How to Find the Sagittarius Constellation The skies of July and August provide an excellent view of the constellation Sagittarius. Easy to spot and filled with fascinating deep-sky objects, Sagittarius is an ideal subject of study for stargazers and astronomers alike. The constellation Sagittarius is often referred to as a teapot because of its appearance: the main boxy shape is the body of the teapot, from which a handle and a spout extend outward. Some observers add that the Milky Way appears to be rising up out of the spout like steam. Finding the Sagittarius Constellation In the northern hemisphere, Sagittarius reaches its highest point in the southern part of the sky during July and August and into early September. Sagittarius is also visible high in the northern part of the sky for regions south of the equator. Sagittarus has such a distinctive shape that its not too hard to spot in the sky. Simply look for the teapot shape next to the curved body of Scorpius the Scorpion.  Not only are these constellations filled with fascinating celestial bodies to observe, they are also on either side of the core of our galaxy, where the black hole Sgr A* lives. A chart of the sky containing Scorpius and Sagittarius. Ross 154 is a faint star in Sagittarius. Carolyn Collins Petersen All About Scorpius Sagittarius is best-known as the figure of a cosmic archer, although the Greeks saw it as a starry representation of a mythical creature called a centaur. Alternatively, some mythology identifies Sagittarius as the son of Pan, the god who created archery. His name was Crotus, and he was put into the sky by the god Zeus so that everyone could see how archery worked. (However, most viewers dont see an archer when they look at Sagittarius- the teapot shape is far easier to identify.) The Stars of the Scorpius Constellation The entire constellation of Sagittarius shown with IAU boundaries and the brightest stars that make up the pattern.   IAU/Sky Telescope The brightest star in the constellation Sagittarius is called Kaus Australis (or Epsilon Sagittarii). The second-brightest is Sigma Sagittarii, with a common name of Nunki. Sigma (Nunki) was one of the stars that the Voyager 2 spacecraft used for navigation as it was traveling to the outer solar system to study the gas giant planets.   There are eight bright stars that make up the teapot shape of the main constellation. The rest of the constellation as outlined by the IAU boundaries has a couple of dozen more stars.   Sagittarius constellation is outlined by eight bright stars, and scattered among them are globular clusters (yellow circles), open clusters (yellow broken line circles), and nebulae (squares). Its best to search this area with a good pair of binoculars just to get an idea of the many fascinating objects in the Sagittarius region.   Carolyn Collins Petersen Selected Deep Sky Objects in Constellation Sagittarius Sagittarius is right on the plane of the Milky Way and its teapot spout points almost directly to the center of our galaxy. Because the galaxy is so well-populated in this part of the sky, observers can spot many star clusters, including a number of globular clusters and open star clusters. Globulars are spherical-shaped collections of stars, many much older than the galaxy itself. Open star clusters are not as tightly gravitationally bound as the globulars. Sagittarius also contains some lovely nebulae: clouds of gas and dust lit up by radiation from nearby stars. The most prominent objects to search out in this area of the sky are the Lagoon Nebula, the Trifid Nebula, and the globular clusters M22 and M55.   Nebulae in Sagittarius Because we look at the galaxy from inside, its very common to see clouds of gas and dust in the plane of the Milky Way. This is especially true in Sagittarius. The Lagoon and Trifid Nebulae are the easit to spot, although they can generally only be seen well with binoculars or a small telescope. Both of these nebulae contain regions where star formation is actively taking place. Astronomers see both newborn stars as well as protostellar objects in these regions, which helps them track the process of starbirth. The Trifid is also known as Messier 20 and has been studied by many ground-based observatories as well as Hubble Space Telescope. It will look somewhat dim but should be easy to spot in a small telescope. Its name comes from the fact that it looks like a little pool next to the brighter regions of the Milky Way. The Trifid looks like it has three lobes connected together. They lie just over four thousand light-years away from us.   The Trifid Nebula in full glorious color provided by the European Southern Observatory. Smaller telescopes will not show these colors, but a long-exposure photograph will.   European Southern Observatory Globular Clusters in Sagittarius Globular clusters are satellites of the Milky Way Galaxy. They often contain hundreds, thousands, or sometimes millions of stars, all tightly bound together by gravity. M22 (which is the 22nd objects in Charles Messiers list of Faint fuzzy objects that he compiled in the 18th century), was first discovered in 1665 and contains about 300,000 stars all packed together in a region of space about 50 light-years across.   This view of the globular cluster M22 in Sagittarius was taken using an amateur telescope.   Hunter Wilson, via Creative Commons Attribution Share-Alike 3.0 Another interesting globular cluster is also in Sagittarius. Its called M55, and was discovered in 1752. It contains just under 300,000 stars all gathered into an area bout 48 light-years across. It lies nearly 18,000 light-years away from us. Search out Sagittarius for other clusters and nebulae, especially using a pair of binoculars or a small telescope.

7 Great Online Research Resources for Writers

7 Great Online Research Resources for Writers 7 Great Online Research Resources for Writers 7 Great Online Research Resources for Writers By Mark Nichol Doing research to strengthen a current story or article, or to get ideas for a new one? You can google all you want and hope for a productive return, but to engage in a focused search, try one of these mediated experiences instead: 1. Infoplease From current events to reference-desk resources to features about history, this site puts a remarkable array of information within reach. Guides to the nations of the world, timelines of political, social, and cultural developments, special quantitative and qualitative features like â€Å"The Worlds Most Corrupt Nations† and â€Å"Color Psychology,† and more cover just about anything you could think of. 2. The Internet Public Library Unlike the other reference centers on this list, the IPL is a portal to other Web sites, brimming with directories of links in topics like Arts Humanities. (Dictionary of Symbolism? Check. Ask Philosophers? Right. Legendary Lighthouses? We got your legendary lighthouses right here.) If you need background information on either fiction or nonfiction projects, stop by for a visit I just dare you to leave without a digressive click or ten. 3. The Library of Congress The online presence of the official repository of knowledge and lore of the United States is an indispensable resource not only for nonfiction writers seeking background information for topics but also for fiction authors seeking historical context for an existing project or inspiration for a new one. 4. Merriam-Webster Online The publishing world’s dictionary of record is at your fingertips online as well as in print, with a thesaurus and Spanish-English and medical compendia, to boot. The dictionary also includes refreshing can’t-we-all-just-get-along usage commentary. (That and which, as pronouns that introduce restrictive clauses, are interchangeable.) You’ll also find video tutorials on usage from dictionary staff, a Word of the Day feature, word games, and a variety of language-watch features. 5. Refdesk Refdesk.com, like Infoplease, is a clearinghouse for online research, with links to headline news and timeless information alike. You can easily get lost in its Daily Diversions directory, which includes links not only to humor, games, and trivia sites but also to more respectable resources like DailyWritingTips.com (whoo!). If you have a question, chances are you can find the answer on this site. 6. Snopes How do you verify that this self-described â€Å"definitive Internet reference source for urban legends, folklore, myths, rumors, and misinformation† is what it claims to be? Go to the site and find out. The fine folks at Snopes.com will set you straight about any one of hundreds of posts each with a prominent judgmental icon, and commentary to back it up about that one thing you think you remember you heard about that one thing. (For example: Posh comes from an acronym for â€Å"port out, starboard home† the ideal respective locations for accommodations on a luxury liner right? Cue the buzzer. Bogus.) TruthOrFiction.com is a similar site. 7. Wikipedia This user-generated online encyclopedia got a lot of flak a few years ago for some inaccurate information posted by someone with a grudge, but that was an isolated incident. Also, many sources warn against using Wikipedia as a primary source for research. That said, don’t hesitate to avail yourself of the wealth of information available on the site much of which is written by subject-matter experts in the field in question. Then click on one of the online sources linked in the footnotes, or take your search to one of the other sites in this list. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Freelance Writing category, check our popular posts, or choose a related post below:Grammar Test 1Writing the Century45 Idioms with "Roll"