The Ellensburg WA sky for the week of 11/28/15

Saturday: “Hey baby! What’s your sign?”

“Ophiuchus, of course”

The Sun is in the same part of the sky as the stars of Ophiuchus from about November 29 to December 17. This is what astrologers mean when they say the Sun is “in” a constellation. Thus, if you were born between these dates, you should be an Ophiuchus. The fact that the horoscopes never list Ophiuchus is a major flaw of astrology. Astrology says that some of our characteristics are based on the location of the Sun at our birth. How can astrologers leave out three weeks from their system? That is like a scientist saying she can explain the results of her experiment every month of the year except early December. Ophiuchus was a mythical healer who was a forerunner to Hippocrates. According to myth, he could raise people from the dead. Maybe that is why he is ignored by astrology. Raising people from the dead is much less impressive than giving spot-on advice such as “Today is a good day to watch your finances.”

The bright stars of Ophiuchus rise just before the Sun. Rasalhague (pronounced Ras’-al-hay’-gwee), the brightest star, is about a half a fist held upright and at arm’s length above the east-northeast horizon at 6:30 a.m.

Sunday: There is a line-up of planets in the morning sky. Venus is two and a half fists above the southeast horizon. The bright star Spica is a half a fist to the lower right of Venus. Mars is a fist and a half to the upper right of Venus. Jupiter is three fists to the upper right of Venus.

Monday: Have you been shopping all weekend? Do you need an evening sky break? You deserve a big reward so make it a double. A Double Cluster, that is. The Double Cluster, also known as h and Chi Persei, consists of two young open star clusters in the constellation Perseus. Of course, young is a relative term as these clusters are about 13 million years old. Each cluster is spread out over an area about the same size as the full moon. To the naked eye, the Double Cluster shines with a steady, fuzzy glow. Binoculars resolve dozens of individual stars in the clusters. The Double Cluster is six fists above the northeast horizon at 6 p.m., about a fist below the sideways “W” of Cassiopeia and three fists above the bright star Capella.

Tuesday: Have you even seen a Black Hole? Neither have scientists. But they have seen the effects of a Black Hole. Black holes have a strong gravitational influence on anything that passes close to them, including light. Cygnus X-1, the first Black Hole candidate ever discovered, is six fists above the west horizon at 7 p.m., in the middle of the neck of Cygnus the swan. NASA launched the Chandra X-ray observatory in 1999 to study black hole candidates and other high-energy events.

Wednesday: I am guessing that some of you don’t like the line of reasoning from Tuesday: that seeing the effects of a Black Hole is good enough to claim there are Black Holes. You have never seen the wind. But, you have seen the effects of the wind. And no Ellensburg resident doubts the existence of the wind.

Thursday: Comet Catalina should now be visible with binoculars in the southeastern sky just before sunrise. First find Venus, the brightest point of light in the sky two and a half fists above the southeast horizon. Move Venus to the upper right hand portion of your binocular field of view. Then move your binoculars to the lower left to the brightest star in that portion of the sky, called Kappa Virginis. This star will be a lot dimmer than Venus. Comet Catalina will be to the left of this star. For more information and a finder chart for Comet Catalina, go to http://goo.gl/LxdeAw.

Friday: Is your favorite astronomy-loving relative of yours asking for a telescope this Christmas? Before reaching for your credit card, read this guide to choosing your first telescope, available at http://goo.gl/5oXmGj. If cost is an issue, look no further than this Sky and Telescope article about low cost telescopes http://goo.gl/40zd6. The authors review and recommend three telescopes that now cost less than $130 each. If you want to give a gag astronomy gift to someone who really bugs you, give them a copy this column. After such a dud “gift”, you’ll never hear from them again. And that may be the best gift of all.

The positional information in this column about stars and planets is typically accurate for the entire week. For up to date information about the night sky, go to http://nightsky.jpl.nasa.gov/planner.cfm.

The Ellensburg WA sky for the week of 11/21/15

Saturday: Do you want to learn more about what goes on at night in the natural world? You can at a free event called Nature of Night on the CWU campus, today from 10 a.m. to 3 p.m. Go to the Science Building, I-8 on the map found at http://www.cwu.edu/facility/campus-map. The Center for Excellence in Science and Mathematics Education gets help from various community organizations to put on this event.

Sunday: Are you disappointed because you are not going anywhere for Thanksgiving? Why not take a (virtual) trip to outer space using Google’s new visualization tool called 100,000 Stars. It shows the stars in our neighborhood in a very good simulation of 3-D. The Sun is initially at the center. If you zoom in, you can click on neighboring stars and learn more about them. For more information and a link to the tool, go to http://goo.gl/hg6Oc.

Monday: Lieutenant Worf, the Klingon Starfleet officer on Star Trek: The Next Generation, might say “Today is a good day to die.” But Deneb, the bright supergiant star in Cygnus the Swan would say “two million years from now is a good day to die.” This may seem like a long time. But, compared to most stars, two million years from now is as close as today. For example, the Sun will last about five billion years. Small stars known as red dwarfs may last trillions of years. Prepare your astronomically short good byes to Deneb tonight at 7 o’clock when it is six and half fists held upright and at arm’s length above the west horizon.

Tuesday: Are you thankful that you live in a solar system with multiple planets? You should be. A giant planet like Jupiter cleans up planetary debris that could have collided with Earth and hindered the formation of complex life. Any inhabitants of the planets orbiting Upsilon Andromedae are thankful for this, as well. Upsilon Andromedae, a star in the constellation Andromeda, was the first Sun-like star discovered to have multiple planets orbiting it. So far, all of its planets are giant planets like Jupiter. But, the system is likely to also contain smaller planets. The dim star, but certainly not its planets, is barely visible straight overhead at 9 p.m. Jupiter is much easier to see, but you have to wait until tomorrow morning to see it. It is four and a half fists above the south-southeast horizon at 6:30 a.m.

Wednesday: Venus, the brightest point of light in the sky, is three fists above due southeast at 6:30 a.m. Mar’s is a little more than a fist to the upper right of Venus. The bright star Spica is a little less than a fist below Venus.

Thursday: Some of us have a lot to be thankful for on Thanksgiving. But, probably not as much as Andromeda had to be thankful for. According to Greek mythology, the beautiful princess Andromeda was chained to a rock next to the ocean. Cetus the sea monster was about to devour her in order to punish her family. Her mother Queen Cassiopeia and her father King Cepheus didn’t know what to do. It seemed that all was lost. But, along came Andromeda’s boyfriend, the great warrior Perseus. Even though Perseus’ standing as the son of King Zeus and the slayer of Medusa was probably enough to win Andromeda under normal circumstances, Andromeda’s impending death-by-sea-monster was not a normal circumstance. So, Perseus drove his sword into the sea monster’s neck and killed it. This was the first time in recorded history that a set of parents actually welcomed an uninvited Thanksgiving visit from the boyfriend. Perseus is about five fists above the east-northeast horizon and Andromeda is about seven fists above the east horizon at 7 p.m.

Friday: Tonight is a good night to calibrate your fists. The general rule is that a fist held out at arm’s length subtends an angle of 10 degrees. At 6:00 p.m., the bright star Altair, in Aquila the eagle, is exactly 40 degrees above due southwest. Thus, it should be exactly four fists above the horizon. In 2006, Altair became the first main sequence star, aside from the Sun, to have its surface imaged directly. The main sequence is a range of temperatures and luminosities where stars spend most of their lives.

The positional information in this column about stars and planets is typically accurate for the entire week. For up to date information about the night sky, go to http://nightsky.jpl.nasa.gov/planner.cfm.

The Ellensburg sky for the week of 11/14/15

Saturday: Most constellations don’t look like the object their name refers to. That’s because most constellations don’t have such a simple to object to emulate as Triangulum does. Triangulum is shaped like a… wait for it…. Wait for it…. A thin isosceles triangle. Mothallah is the only named star in the constellation. In Latin this star is called Caput Trianguli, the head of the triangle. Triangulum is six fists held upright and at arm’s length above the south horizon at 8 p.m. It is pointing down and to the right with Mothallah being the southernmost star at this time of night. The Triangulum Galaxy can be seen with binoculars about a half a fist to the right of Mothallah.

Sunday: It’s getting too cold to see frogs in the wild. But this is a great time to see frogs in the sky. Ancient Arabs referred to the stars that we now call Fomalhaut and Diphda as ad-difdi al-awwal and ad-difda at-tani. This means the first frog and the second frog, respectively. Both frogs are low in the southern sky at 8 p.m. Fomalhaut is one fist above the horizon and one fist to the east of due south. The slightly dimmer Diphda a little more than two fists above the horizon and one fist to the west of due south.

Monday: If you are a fan of science fiction, you may have heard of Tau Ceti. It’s a real Sun-like star with many fake civilizations. In 2012, astronomers discovered strong evidence of five real planets orbiting Tau Ceti. But before you go looking for Barbarella, read the latest research reports. Astronomers think these planets are made from different materials than Earth and would be regularly bombarded with comets and asteroids, destroying any life and space babes that arise. Tau Ceti is two and a half fists above due south at 10 p.m., one and a half fists to the left of Diphda.

Tuesday: The Leonid meteor shower peaks tonight and tomorrow morning. These meteors appear to come from a point in the constellation Leo the lion. This point is about one fist held upright and at arm’s length above the east-northeast horizon at midnight tonight. You can follow this point throughout the night and into the morning, as it will remain about one fist above the bright star Regulus. The first quarter moon will be doing its part to stay out of the way meaning even the dimmer meteors will be visible. The Leonid meteors are particles from the tail of Comet Tempel-Tuttle, a comet discovered by Ernst Tempel and Horace Parnell Tuttle in 1866. These are exceptionally fast moving meteors – over 150,000 miles per hour! Go to http://goo.gl/GkLiw7 to read everything you need to know about the Leonid meteor shower. As your Mother might say, dress warm and sit in a comfortable chair for maximum enjoyment.

Wednesday: When you think of space, the first image that comes to mind is a few large, massive bodies surrounded by a lot of empty space. After all, it is called “outer space”, not “outer stuff”. But that so-called empty space is filled with powerful radiation and high-speed sub-microscopic particles. Much of this is dangerous to life. However, many planets, including Earth, have a shield against radiation and particles called a magnetic field. Jupiter’s magnetic field is the strongest of all the planets. Find Jupiter four and a half fists above the southeast horizon at 6:30 a.m. At this same time, Venus is three fists above due southeast and Mars is a fist to the upper right of Venus.

Thursday: The brightest star in the nighttime sky is making its way into the evening sky. Sirius is a little more than a half a fist above the southeast horizon at 11 p.m.

Friday: The Nature of Night event takes place tomorrow from 10 a.m. to 3 p.m. in the Science Building on the CWU campus. There will be planetarium shows, fun nighttime projects, telescopes, animals, cookies and much more.

The positional information in this column about stars and planets is typically accurate for the entire week. For up to date information about the night sky, go to http://nightsky.jpl.nasa.gov/planner.cfm.

The Ellensburg WA sky for the week of 11/7/15

Saturday: Imagine Opie and Andy Taylor walking down the dirt path at night to that fishing hole in the sky. They’d probably be looking to catch Pisces, the two fish already conveniently tied together with two ropes. The ropes are connected at the star Alrescha, Arabic for “the cord”. Alrescha is four fists held upright and at arm’s length above due south at 10:30 p.m. The fish are attached to lines of stars that branch out at one o’clock and three o’clock from Alrescha. By the way, “The Fishing Hole”, The Andy Griffith Show’s theme song, was rated the 20^th best TV theme song of all time by ign.com. That’s too low of a rating in my opinion.

Sunday: Did you look up Hypatia and Muhammad ibn Musa al-Khwarizmi based on last week’s Halloween costume suggestion? Hypatia was a Greek astronomer, mathematician, and philosopher born about 370 CE. Very little was written about her while she was alive. Also, no work definitely thought to be hers, alone, has survived. Later writers and historians believe she wrote “The Astronomical Canon” and designed an improved version of the astrolabe, a tool for studying the night sky. Muhammad ibn Musa al-Khwarizmi was a Persian astronomer, mathematician, and geographer born around 780 CE. He is best known as the person who invented algebra. He also write an extensive book of astronomical tables which Islamic scientists used to predict the movements of the Sun, Moon, and five known (at the time) planets.

Monday: While Stonehenge is an ancient burial ground visited by religious people for thousands of years, MIThenge is an 825-foot long hallway on the campus of the Massachusetts Institute of Technology visited by the Sun’s rays twice a year.  Every year in November and January, the setting Sun lines up with a narrow window at the end of the long hall and the light shines down to the opposite end. This season’s alignment is from November 10-13. For more information, visit http://goo.gl/0hwFQf or visit MIT. In addition, challenge yourself to find a similar alignment

Tuesday: Say “good bye” to Saturn. At 5 p.m., it is less than a half a fist above the southwest horizon. It will be lost in the glare of the setting Sun by the end of the week.

Wednesday: We wish you a Merry Martinmas. We wish you a Merry Martinmas. We wish you a Merry Martinmas. And a happy Wednesday. Martinmas is a holiday in many parts of the world commemorating Saint Martin of Tours. He was buried on November 11, 397. What does this have to astronomy? Not much except that the celebration on November 11 often doubles as a cross-quarter day celebration, a day that is halfway between an equinox and a solstice. Also, according to an agricultural calendar, November 11 marks the practical beginning of winter.

Thursday: The Northern Taurid meteor shower peaks tonight. These are slow moving meteors that result in the occasional fireball. The Moon is near new so there won’t be much celestial light obscuring your view. Meteor showers are named after the constellation from which the meteors appear to originate. These meteors appear to come from a point in Taurus the bull, near the open star cluster called the Pleiades. This point is about three fists above the east horizon at 8 p.m. You can follow this point throughout the night, as it will remain one fist above the V-shaped Hyades Cluster with its bright star Aldebaran (pronounced Al-deb’-a-ran). Meteors are tiny rocks that burn up in the atmosphere when the Earth runs into them. These rocks are broken off parts of Comet 2P/Encke.

Friday: At 6 a.m., Jupiter is four fists above the southeast horizon and Venus is a little less than three fists above the southeast horizon. Mars is about a half a fist to the upper right of Venus.

The positional information in this column about stars and planets is typically accurate for the entire week. For up to date information about the night sky, go to http://nightsky.jpl.nasa.gov/planner.cfm.