Celestial Highlights for March 2014
Posted: Tuesday, March 4th, 2014
by Robert Victor and Robert D. Miller
Evening Standouts: Jupiter, Sirius, and (for Southern California) Canopus; Mars, brightening, rises into early evening view – Venus and Mars rule the dawn.
March 2014 at dusk For monthly evening and morning twilight sky maps for northern California (exact for lat. 40° N), activities and videos on changing visibility of stars and planets, and a preview of Comet Halley’s next appearance in 2061, visit www.pa.msu.edu/abrams/msta/
In March 2014, the two most prominent “stars” visible at dusk attain their highest positions almost simultaneously. Ranking first is Jupiter, reaching its highest position in a dark sky it will get until many years from now. From latitude 34° north (Los Angeles and Palm Springs), it passes within 11° south of overhead. Next in brilliance is Sirius, the “Dog Star”, 40° up in south. Third in brightness in early March but visible only from southern parts of our state is Canopus, passing due south about 21 minutes before Sirius does, but 36° lower.
By month’s end, as the rising time of Mars shifts earlier to mid-twilight, the red planet brightens to become almost the equal of Sirius.
Other features of early evening: A telescope shows up to four of Jupiter’s moons discovered by Galileo in 1610. Jupiter and Orion’s red Betelgeuse and blue Rigel now lie in a nearly straight line. Orion’s 3-star belt (not shown on the chart) lies midway between those two stars and points the way left toward Sirius, and the opposite way toward Aldebaran, eye of Taurus, the Bull, and beyond to the beautiful Pleiades or “Seven Sisters” star cluster (not shown). The huge “Winter Hexagon”, in counterclockwise order Sirius-Rigel-Aldebaran-Capella-Pollux-Castor (not shown)-Procyon and back to Sirius, with Jupiter and Betelgeuse within, contains 8 of the 21 stellar objects of first magnitude or brighter (16 stars and 5 planets) viewable from southern California. Their constellations include a bull backing away from a charging hunter and his two canine followers, a pair of twins, and a chariot driver with mother goat and three kids on his shoulder.
Following this menagerie is Leo, the Lion, with the bright star Regulus marking his heart. Is the Lion chasing his dinner across the sky? Quite a menu!
By March’s end, Arcturus, the “Bear Guardian” star, pops up above the ENE horizon before mid-twilight. Follow the curve of the bear’s tail (handle of the Big Dipper) through Arcturus to brightening reddish Mars rising just south of east, and to Spica, Virgo’s sheaf of grain, rising 5° to Mars’ lower right 15-20 minutes later. (In third week of March, Mars and Spica rise almost simultaneously in a dark sky about 2 hours after sunset. Earlier in March, Spica rises first.)
March Moon Madness
The waxing Moon can be spotted daily at mid-twilight in first half of March. New Moon occurred at 12:00 a.m. PST at the start of March 1.
By the evening of Sunday, March 2, the 1¾-day old crescent is very easy to spot with unaided eye. For a few more evenings, look for earthshine, illumination from sunlight reflected by the Earth onto the Moon’s dark (non-sunlit) side. Watch the crescent thicken daily as it moves farther from the Sun on each successive evening, passing the Pleiades star cluster at nightfall on March 6, and within 3° above Aldebaran by the next evening. The Moon reaches First Quarter phase, half full and 90° from the Sun, between the evenings of March 7 and 8.
The gibbous Moon is nearly up to Jupiter on the evening of the 9th, and past it and widely south of the Gemini Twins Castor and Pollux on the next evening. The Moon hops past Regulus between the evenings of March 13 and 14.
Finally, the Full Moon on Sunday, March 16 rises about 20 minutes after sunset, and at mid-twilight is 3° up and 6° south of east. Continue following the Moon for four more evenings by waiting for its rising about an hour later each night — or switch your viewing time to morning.
The brightest objects in morning twilight, in order of brilliance, are: Venus in southeast, slowly declining from its astounding peak brilliance in February, and now appearing as a roughly “half moon” through telescopes; Mars in SW to WSW; Arcturus high in west; Vega high in NE; Saturn in SSW to SW. Late in month, Mercury low in ESE to E brightens to outshine Arcturus, but it drops very low in bright twilight as it approaches the far side of the Sun.
Mars-Spica are 6.0° apart on March 1, closing to 5.0° apart on March 20, to a least separation of 4.8° on March 25 and 26, in the second of three conjunctions within six months. Their final pairing, just 1.3° apart, will occur in the evening sky on July 13.
Near Vega are Altair to its lower right and Deneb to its lower left, completing the Summer Triangle.
To the left of the Mars-Spica pair lies a yellowish point of light glowing steadily. A telescope reveals the rings of Saturn, now tipped over 22° from edge-on!
Extend the Mars-to-Saturn line to left of Saturn and drop down a bit, and you’ll find reddish twinkling Antares, heart of the Scorpion.
The Moon can be followed in morning twilight, starting as a Full Moon low in the west on March 16, and ending as an old crescent very low, just S of E in bright twilight, on March 29. Along the way, the waning Moon passes four planets and two first-magnitude stars, as shown in these illustrations from the Abrams Planetarium Sky Calendar.
Of all these events, be sure you and your students don’t miss the beautiful predawn pairing of the crescent Moon with Venus on March 27. As your first activity at school that day, use the Moon to help locate Venus in the daytime.
The second New Moon of this month occurs on the 30th at 11:45 a.m. PDT.
Finally, March ends as it began, with a beautiful young crescent Moon low in the western sky at dusk on March 31. Easy for unaided eye forty minutes after sunset, it will be 8° north of west, 7 degrees above the horizon, and 32 hours old.
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: Wednesday, October 12th, 2016
by Jessica Sawko
In June 2016 California submitted a waiver application to discontinue using the old CST (based on 1998 standards) and conduct two years of pilot and field tests (in spring 2017 and 2018, respectively) of the new science assessment designed to support our state’s current science standards (California Next Generation Science Standards (CA-NGSS) adopted in 2013). The waiver was requested because no student scores will be provided as a part of the pilot and field tests. The CDE received a response from the U.S. Department of Education (ED) on September 30, 2016, which provides the CDE the opportunity to resubmit a revised waiver request within 60 days. The CDE will be revising the waiver request and resubmitting as ED suggested.
At its October 2016 North/South Assessment meetings CDE confirmed that there will be no administration of the old CST in the spring of 2017. (An archive of the meeting is available at http://www.cde.ca.gov/ta/tg/ai/infomeeting.asp.) Learn More…
Posted: Thursday, September 22nd, 2016
by Carol Peterson
1) To celebrate the 100th anniversary of the National Park Service, Google has put together a collection of virtual tours combining 360-degree video, panoramic photos and expert narration. It’s called “The Hidden Worlds of the National Parks” and is accessible right from the browser. You can choose from one of five different locales, including the Kenai Fjords in Alaska and Bryce Canyon in Utah, and get a guided “tour” from a local park ranger. Each one has a few virtual vistas to explore, with documentary-style voiceovers and extra media hidden behind clickable thumbnails. Ideas are included for use in classrooms. https://www.engadget.com/2016/08/25/google-offers-360-degree-tours-of-us-national-parks/. Learn More…
Posted: Thursday, September 22nd, 2016
CSTA is pleased to announce the winners of the 2016 CSTA Awards for Distinguished Contributions, Margaret Nicholson Distinguished Service Award, 2014 and 2015 PAEMST-Science recipients from California, and the 2016 California PAEMST Finalists. The following individuals and organizations will be honored during the 2016 California Science Education Conference on October 21- 23 in Palm Springs. This year’s group of awardees are truly outstanding. Please join us in congratulating them!
Margaret Nicholson Distinguished Service Award
The Margaret Nicholson Distinguished Service Award honors an individual who has made a significant contribution to science education in the state and who, through years of leadership and service, has truly made a positive impact on the quality of science teaching. This year’s recipient is John Keller, Ph.D. Dr. Keller is Associate Professor, Cal Poly San Luis Obispo and Co-Director, Center for Engineering, Science, and Mathematics Education, Cal Poly San Luis Obispo. In her letter of recommendation, SDSU science education faculty and former CSTA board member Donna Ross wrote: “He brings people together who share the desire to make a difference in the development and implementation of programs for science teaching. Examples of these projects include the Math and Science Teaching Initiative (MSTI), Noyce Scholars Program, Western Regional Noyce Initiative, and the Science Teacher and Researcher (STAR) program.” Through his work, he has had a dramatic impact on science teacher education, both preservice and in-service, in California, the region, and the country. He developed and implemented the STEM Teacher and Researcher Program which aims to produce excellent K-12 STEM teachers by providing aspiring teachers with opportunities to do authentic research while helping them translate their research experience into classroom practice. SFSU faculty member Larry Horvath said it best in his letter:“John Keller exemplifies the best aspects of a scientist, science educator, and mentor. His contributions to science education in the state of California are varied, significant, and I am sure will continue well into the future.” Learn More…
Posted: Tuesday, September 20th, 2016
by Peter A’hearn
NGSS is a big shift. Teachers need to learn new content, figure out how this whole engineering thing relates to science, and develop new unit and lesson plans. How could NGSS possibly make life easier?
The idea that NGSS could make our lives easier came to me during the California State NGSS Rollout #1 Classroom Example lesson on chromatography. I have since done this lesson with high school chemistry students and it made me think back to having my own students do chromatography. I spent lots of time preparing to make sure the experiment went well and achieved the “correct” result. I pre-prepared the solutions and organized and prepped the materials. I re-wrote and re-wrote again the procedure so there was no way a kid could get it wrong. I spent 20 minutes before the lab modeling all of the steps in class, so there was no way to do it wrong. Except that it turns out there were many. Learn More…
Posted: Tuesday, September 20th, 2016
by Robert C. Victor. Twilight sky maps by Robert D. Miller. Graph of evening planet setting times by Dr. Jeffrey L. Hunt
Our evening twilight chart for September, depicting the sky about 40 minutes after sunset from SoCal, shows brilliant Venus remaining low, creeping from W to WSW and gaining a little altitude as the month progresses. Its close encounter within 2.5° N of Spica on Sept. 18 is best seen with binoculars to catch the star low in bright twilight. The brightest stars in the evening sky are golden Arcturus descending in the west, and blue-white Vega passing just north of overhead. Look for Altair and Deneb completing the Summer Triangle with Vega. The triangle of Mars-Saturn-Antares expands as Mars seems to hold nearly stationary in SSW as the month progresses, while Saturn and Antares slink off to the SW. Learn More…