Celestial Highlights for August 2014
Posted: Tuesday, August 5th, 2014
by Robert C. Victor with twilight sky maps by Robert D. Miller
Mars and Saturn draw attention in the southwest evening sky, as they appear within 10° Aug. 8-Sept. 10, and within 5° Aug. 19-31. Viewed through a telescope this month, Saturn with its shadow cast upon its rings has a striking 3-dimensional appearance.
Some 45 minutes to an hour before sunrise, brilliant Venus low in east-northeast is accompanied by Jupiter, itself of considerable brightness, no more than 5° away Aug. 13-22. On Aug. 17, the two spectacular points of light are just 0.7° apart, and on Aug. 18, an even more impressive 0.4°.
Attractive gatherings of Moon with these planet pairs occur on August 23 at dawn, and on August 31 at dusk. Dark moonless evenings offer excellent views of the Milky Way, best Aug. 1-2 and 28-31 after moonset; Aug. 13-16 before moonrise; and Aug. 17-27.
The five brightest objects in evening mid-twilight are: Arcturus and Vega, mag. 0.0; Mars (+0.4 to +0.6), Saturn (+0.5 to +0.6), and Altair (mag. +0.8).
Planets: Finally, we have our first mutual conjunction of naked-eye planets in the evening sky this year, as Mars passes 3.4° S of Saturn on Aug. 25, in SW sky. At dusk on Aug. 31 a thick crescent Moon forms a pretty gathering with Mars and Saturn, several hours after a daytime occultation of the ringed planet.
Stars: Arcturus, Spica, Antares, all in W half of sky, sink lower as month progresses. Summer Triangle of Vega, Altair, and Deneb, well up in E, ascends still higher.
The Moon in evening sky is found near Spica on Aug. 1 & 2; Mars on Aug. 2 and 3; Saturn on Aug. 3 and 4; Antares on Aug. 5; Spica on Aug. 29; Mars and Saturn on Aug. 31, forming a nice trio! See Sky Calendar for illustrations of these events.
Follow the Moon daily one to 1-1/4 hours after sunset August 1-11, and starting again on August 27 or 28, as a waxing crescent for the rest of the month.
On Tues. Aug. 5, Antares appears within 8° below the Moon, now nearly three-quarters full.
On Sunday, Aug. 10, with unobstructed views of the horizon, you can catch the Full “Supermoon” setting 15° south of west a few minutes before sunrise, and rising 12° south of east a few minutes before sunset. An hour after sunset, the Full Moon is 12° up in ESE.
On Monday, Aug. 11, the Moon rises within 40 minutes after sunset, and by one hour after sunset the Moon appears only 4° up and 9° south of east.
After Full, the waning Moon rises later each evening, but not quickly enough to prevent bright moonlight from diminishing the peak of the Perseid meteor shower on the night of Aug. 12-13. As an example, here are moonrise times for Palm Springs: Sun. Aug. 10 at 7:32 p.m. PDT; Mon. Aug. 11 at 8:16 p.m.; Tues. Aug. 12 at 8:57 p.m.; Wed. Aug. 13 at 9:37 p.m.; Thurs. Aug. 14 at 10:17 p.m.; Fri. Aug. 15 at 10:58 p.m. On Saturday, Aug. 16, the Moon, just over half illuminated and approaching Last Quarter phase, rises at 11:40 p.m.
Perseid meteors can be seen anywhere in the sky, but if the track of a Perseid meteor is extended backward, it will trace back to the radiant in Perseus, to lower left, or later in the night, below, the “W” of Cassiopeia. That’s the direction from which the stream of meteoroids (dust from Comet Swift-Tuttle) approaches Earth. On the evening of Tues. Aug. 12, as twilight ends from lat. 34° north some ten minutes after moonrise, the shower radiant is only 8° up in NNE. Meteors seen then won’t be plentiful, but any that are seen will be “Earth-grazers”, with long paths dipping into our atmosphere at a shallow angle. As twilight begins at 4:35 a.m. on Wednesday morning Aug. 13, the radiant is nearly 60 degrees up in NNE to NE. Meteors will be more plentiful, because our part of the Earth will be presented more broad side to the incoming stream. But this year the Moon will be high and bright, reducing the numbers seen.
Note on Wednesday evening, Aug. 13, there is a brief half-hour window of dark skies before moonrise, presenting another chance for seeing Earth-grazers, but not many, because Earth has moved out of the core of the Perseid stream.
In 2015, the Perseid meteor shower will be a grand spectacle, as New Moon will occur on August 14, only one day after peak.
Five brightest “stars”: Venus; Jupiter and Sirius, once they appear, in August’s second week; Vega and Capella.
Planets: A spectacular, close pairing of the two brightest planets, Venus and Jupiter, will provide much enjoyment for morning twilight skywatchers in August. Try to catch emerging Jupiter on earliest possible date. Please see Sky Calendar for illustrations of these events . On Aug. 8, watch for Jupiter rising in ENE within 10° lower left of Venus and moving about 1° closer to it each day. By Aug. 13, the planets are only 5° apart. Look daily and enjoy the show! On Aug. 17, they’re 0.7° apart, and on August 18, the two bright planets will appear closest, within 0.4° apart! They’ll spread to just over 5° apart by Aug. 23, when a waning crescent Moon appears to their right, within 5° to 8° away.
Stars: As this month begins, we see the Summer Triangle in W to NW, and Fomalhaut in SSW to SW, sinking lower with each passing day. In the eastern sky, as August opens, we’re already seeing Capella, Aldebaran, and Orion’s Betelgeuse and Rigel as described in the opening lines of Robert Frost’s poem, The Star Splitter; and we’re also seeing Venus, and Pollux. Joining the spectacle in August’s second week are Jupiter, Procyon, and Sirius. On many long-ago August mornings, I enjoyed finding out by observation on which date I could first spot Procyon, the “before the Dog” announcer of Sirius, and then Sirius itself a few mornings later.
If you look at just the right time, from a place where mountains don’t block your view, you can see the Winter Triangle and Summer Triangle simultaneously, just after Sirius rises and before Altair sets. You can then observe 11 of the 16 stars of first magnitude or brighter ever visible from southern California, or 11 of the 15 ever visible from northern parts of the state.
See the Moon in morning near Aldebaran on Aug. 18; and Venus and Jupiter on Aug. 23, a brilliant gathering!
Seize opportunities this summer to enjoy the beauty of the sky!
Robert D. Miller, who provided the twilight charts, did graduate work in Planetarium Science and later astronomy and computer science at Michigan State University and remains active in research and public outreach in astronomy.
Posted: Monday, March 27th, 2017
The California Science Teachers Association (CSTA) stands with our science and science education colleagues in endorsing the March For Science and its associated activities.
The decision by the CSTA Board of Directors to support the March for Science was based on the understanding that this is an opportunity to advocate for our mission of high quality science education for all and to advance the idea that science has application to everyday life, is a vehicle for lifelong learning, and the scientific enterprise expands our knowledge of the world around us. The principles and goals of the March for Science parallel those of CSTA to assume a leadership role in solidarity with our colleagues in science and science education and create an understanding of the value of science in the greater community. CSTA believes that the integrity of the nature of science and that the work of scientists and science educators should be valued and supported. We encourage your participation to stand with us.
There are over 30 satellite marches planned for the April 22, 2017 March for Science in California (to find a march near you, click on “marches” in the upper right of the main page, select “satellite marches” and use the search feature). We encourage members who participate in the March for Science to share their involvement and promotion of science and science education. Feel free to promote CSTA on your signs and banners. For those on social media, you may share your involvement via Twitter, @cascience and our Facebook groups.
Posted: Tuesday, March 14th, 2017
The pre-publication version of the new California Science Curriculum Framework is now available for download. This publication incorporates all the edits that were approved by the State Board of Education in November 2016 and was many months in the making. Our sincere thanks to the dozens of CSTA members were involved in its development. Our appreciation is also extended to the California Department of Education, the State Board of Education, the Instructional Quality Commission, and the Science Curriculum Framework and Evaluation Criteria Committee and their staff for their hard work and dedication to produce this document and for their commitment to the public input process. To the many writers and contributors to the Framework CSTA thanks you for your many hours of work to produce a world-class document.
For tips on how to approach this document see our article from December 2016: California Has Adopted a New Science Curriculum Framework – Now What …? If you would like to learn more about the Framework, consider participating in one of the Framework Launch events (a.k.a. Rollout #4) scheduled throughout 2017.
The final publication version (formatted for printing) will be available in July 2017. This document will not be available in printed format, only electronically.
Posted: Monday, March 13th, 2017
The 2017 Award Season is now open! One of the benefits of being a CSTA member is your eligibility for awards as well as your eligibility to nominate someone for an award. CSTA offers several awards and members may nominate individuals and organizations for the Future Science Teacher Award, the prestigious Margaret Nicholson Distinguished Service Award, and the CSTA Distinguished Contributions Award (organizational award). May 9, 2017 is the deadline for nominations for these awards. CSTA believes that the importance of science education cannot be overstated. Given the essential presence of the sciences in understanding the past and planning for the future, science education remains, and will increasingly be one of the most important disciplines in education. CSTA is committed to recognizing and encouraging excellence in science teaching through the presentation of awards to science educators and organizations who have made outstanding contributions in science education in the state and who are poised to continue the momentum of providing high quality, relevant science education into the future. Learn More…
Posted: Monday, March 13th, 2017
CSTA is now accepting applications from regular, preservice, and retired members to serve on our volunteer committees! CSTA’s all-volunteer board of directors invites you to consider maximizing your member experience by volunteering for CSTA. CSTA committee service offers you the opportunity to share your expertise, learn a new skill, or do something you love to do but never have the opportunity to do in your regular day. CSTA committee volunteers do some pretty amazing things: Learn More…
Posted: Monday, March 13th, 2017
by Marian Murphy-Shaw
If you attended an NGSS Rollout phase 1-3 or CDE workshops at CSTA’s annual conference you may recall hearing from Chris Breazeale when he was working with the CDE. Chris has relocated professionally, with his passion for science education, and is now the Executive Director at the Explorit Science Center, a hands-on exploration museum featuring interactive STEM exhibits located at the beautiful Mace Ranch, 3141 5th St. in Davis, CA. Visitors can “think it, try it, and explorit” with a variety of displays that allow visitors to “do science.” To preview the museum, or schedule a classroom visit, see www.explorit.org. Learn More…