Wednesday, November 15, 2017

The Ellensburg WA sky for the week of 11/18/17

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 2 p.m. Go to the two largest science buildings on campus, J-9 and H-10 on the map found at http://www.cwu.edu/facility/campus-map. There will be planetarium shows, fun nighttime projects, telescopes, animals, cookies and much more. The College of the Sciences 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 3-D simulation. The Sun is initially at the center. If you zoom in, you can click on neighboring stars and learn more about them. Go to http://stars.chromeexperiments.com/ for the simulation. It works best on a Chrome browser.

Monday: Saturn is about two finger widths to the lower left of the crescent Moon at 5 p.m. Both are low in the southwestern sky. Mercury is below the pair, just above due southwest.

Tuesday: So, you are not into virtual vacations like the Google Simulation, hmmm? How about a vacation to the most recently discovered Earth-sized temperate planet in our stellar neighborhood? The European Southern Observatory discovered that Ross 128, a red dwarf star only 11 light-years away (the 12th nearest star system to Earth) has a rocky planet in its habitable zone. Convenient for those not willing to make a commitment yet, Ross 128 and its planet are moving towards Earth. In only 79, 000 years, it will be the star and exoplanet closest to Earth. This extremely dim star is three and a half fists above due southeast at 6 a.m. For more information about the discover, and to possibly book a trip, go to http://www.eso.org/public/news/eso1736/.

Wednesday: 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 nearly one and a half fists above the southeast horizon at 7 a.m. Venus is below it, just above the horizon.

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: 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.


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 https://nightsky.jpl.nasa.gov/planner.cfm.

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