March 2021

Monday, March 1, 2021 via Zoom (due to COVID-19)

Program: Electronically-assisted Astronomy with Special Guest Speaker from the Astronomical Club of Tulsa!

Members will be sent a link to the Zoom meeting.

ZOOM meeting will start around 6:45 to allow people to log in.

Everyone invited.

BAS meetings feature presentations on a variety of astronomy and space science topics. Meetings are usually on the first Monday evening of each month and are open to the public. Guests are always welcome. More event details are listed on our calendar.

The great tradition of dark sky observing continues with the 42nd Annual

TEXAS STAR PARTY, May 2-9, 2021!

near Ft Davis, Texas

We have made changes to help deal with COVID-19 concerns. Find out more at:

https://texasstarparty.org/coronavirus-and-tsp/

Staying on the Ranch in housing, RV, or camping? Staying off-site in other accommodations?

Everyone needs to enter the TSP drawing, held in late January.

You should submit a Registration/Reservation Request Form to ENTER THE TSP DRAWING

before January 22, 2021.

This will provide you the highest possible chance of being selected as one of the 300 people

who will be able to attend TSP this year.

Follow this link to get started!

https://texasstarparty.org/get-started/

SIGN UP NOW!

You can find out the status of your TSP Registration at any time by visiting

https://texasstarparty.org/account/

Find the latest news at:

https://texasstarparty.org/news/

Questions? Visit our web site for the latest and complete details!

https://texasstarparty.org/ or email tsprooms@texasstarparty.org

We look forward to seeing you next May!

Sincerely,

the volunteers for Texas Star Party

~~~~~

Reflections on Astronomy

Brief essays about experiences in astronomy.

The email address is bvilleastro+comments@gmail.com .

BAS Historical Materials Needed

In conjunction with the upcoming BAS Library Display, an effort is being made to locate as much historical club material as possible. Only a small part of the material will be included in the display, but we need to centralize all historical club information. If you know the location of, or have any access to old club photos, newspaper clippings, articles or other historical materials, or if you have memories or recollections of past BAS events or information, please contact John Blaesi or John Grismore. Thanks.

The BAS now has storage at First Christian Church for club equipment and records. We are trying to consolidate and we are requesting any members with club equipment or records to contact one of the officers to arrange to move the items to storage and log it into our inventory.

Apps for Consideration

Family Fun with Sky Watching

http://www.skyandtelescope.com/astronomy-resources/stargazing-basics/family-projects-and-experiments/

Clear Sky Predictor for Bartlesville: http://www.cleardarksky.com/c/BrtlsvlOKkey.html

Sky and Telescope News http://www.skyandtelescope.com/astronomy-news/observing-news/

First-detected Black Hole is More Massive Than We Thought

A higher mass for Cygnus X-1, the first black hole to be discovered, challenges ideas about the evolution of massive stars.

BY: JULIE FREYDLIN FEBRUARY 22, 2021

Watch NASA's Perseverance Land in Jezero Crater on Mars

NASA’s Perseverance rover is providing us with amazing views of its new home., including an amazing video of the sky-crane descent.

BY: DAVID DICKINSON FEBRUARY 22, 2021

New Map of Ice on Mars Will Aid Future Crewed Missions

Scientists have made a new and improved map of possible water-ice reservoirs on Mars.

BY: ARWEN RIMMER FEBRUARY 19, 2021

NASA’s Perseverance Arrives on Mars

NASA’s Perseverance rover, now safely on the floor of Jezero crater, will soon begin its search for evidence of past life on Mars.

BY: KELLY BEATTY FEBRUARY 18, 2021

A Deep-sky Hippity-hop through Lepus, the Hare

Snare a dozen bright double stars and deep-sky objects in the celestial Hare the next clear night. We also provide details on how to watch the potentially hazardous asteroid Apophis occult a star the night of February 21st.

BY: BOB KING FEBRUARY 17, 2021

Chlorine and Water Are in the Air in Martian Summertime

Two studies of the Martian atmosphere are changing the way we think about its current climate and its ancient past.

BY: ARWEN RIMMER FEBRUARY 12, 2021

Perseverance Lands on Mars in One Week: Here's How to Watch Online

One week from today, NASA's Perseverance rover will land on Mars. Find resources here — including broadcast of the landing itself.

BY: MONICA YOUNG FEBRUARY 11, 2021

China's Tianwen 1 Arrives at Mars

China’s ambitious mission to Mars, Tianwen 1, has arrived at the Red Planet and will attempt to land a rover on the surface in May.

BY: DAVID DICKINSON FEBRUARY 11, 2021

The United Arab Emirates' Hope Enters Orbit Around Mars

The United Arab Emirates Hope orbiter is the first in a series of spacecraft arriving at the Red Planet in the next week.

BY: DAVID DICKINSON FEBRUARY 9, 2021

Tree Rings Help Reconstruct a Millennium of the Sun's Activity

Astronomers are using tree rings as a historical record of solar activity — and they've found that the Sun was much more active in the past.

BY: JAN HATTENBACH FEBRUARY 8, 2021

Our Tiny Galactic Neighbor Hosts Ancient Stars

New observations show ancient stars lining the edges of the ultra-faint dwarf galaxy Tucana II, a tiny satellite of the Milky Way.

BY: JULIE FREYDLIN FEBRUARY 5, 2021

Second Earth Trojan Asteroid Discovered

A recently discovered asteroid appears to be an Earth Trojan, orbiting a gravitationally stable area with only one other known occupant.

BY: JEFF HECHT FEBRUARY 4, 2021

Planets and Comets Can't Hide from SOHO's Eye

With the help of the Solar Heliospheric Observatory you can not only keep track of the planets in the daytime sky but maybe even discover a comet.

BY: BOB KING FEBRUARY 3, 2021

Measuring Solar Eruptions with a Rare Alignment

New analysis of a coronal mass ejection detected by the alignment of two spacecraft reveals that it experienced erosion and restructuring as it traveled.

BY: AAS NOVA JANUARY 28, 2021

Solar and Lunar Eclipses in 2021

Four eclipses occur in 2021, with annular and total solar eclipses alternating between total and not-quite-total lunar eclipses.

BY: KELLY BEATTY JANUARY 26, 2021

Astronomers Spot Galaxies Clustering in Early Universe

Astronomers have discovered a cluster of galaxies coming together just 770 million years after the Big Bang.

BY: GOVERT SCHILLING JANUARY 26, 2021

Astronomy Calendar of Celestial Events

(Source: http://www.seasky.org/astronomy/astronomy-calendar-2021.html)

February 27 - Full Moon. The Moon will be located on the opposite side of the Earth as the Sun and its face will be will be fully illuminated. This phase occurs at 08:19 UTC. This full moon was known by early Native American tribes as the Snow Moon because the heaviest snows usually fell during this time of the year. Since hunting is difficult, this moon has also been known by some tribes as the Hunger Moon, since the harsh weather made hunting difficult.

March 6 - Mercury at Greatest Western Elongation. The planet Mercury reaches greatest western elongation of 27.3 degrees from the Sun. This is the best time to view Mercury since it will be at its highest point above the horizon in the morning sky. Look for the planet low in the eastern sky just before sunrise.

March 13 - New Moon. The Moon will located on the same side of the Earth as the Sun and will not be visible in the night sky. This phase occurs at 10:23 UTC. This is the best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere.

March 20 - March Equinox. The March equinox occurs at 09:27 UTC. The Sun will shine directly on the equator and there will be nearly equal amounts of day and night throughout the world. This is also the first day of spring (vernal equinox) in the Northern Hemisphere and the first day of fall (autumnal equinox) in the Southern Hemisphere.

March 20 - Venus at Greatest Western Elongation. The planet Venus reaches greatest eastern elongation of 46.6 degrees from the Sun. This is the best time to view Venus since it will be at its highest point above the horizon in the morning sky. Look for the bright planet in the eastern sky before sunrise.

March 28 - Full Moon. The Moon will be located on the opposite side of the Earth as the Sun and its face will be will be fully illuminated. This phase occurs at 18:49 UTC. This full moon was known by early Native American tribes as the Worm Moon because this was the time of year when the ground would begin to soften and the earthworms would reappear. This moon has also been known as the Crow Moon, the Crust Moon, the Sap Moon, and the Lenten Moon.

April 12 - New Moon. The Moon will located on the same side of the Earth as the Sun and will not be visible in the night sky. This phase occurs at 02:32 UTC. This is the best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere.

April 22, 23 - Lyrids Meteor Shower. The Lyrids is an average shower, usually producing about 20 meteors per hour at its peak. It is produced by dust particles left behind by comet C/1861 G1 Thatcher, which was discovered in 1861. The shower runs annually from April 16-25. It peaks this year on the night of the night of the 22nd and morning of the 23rd. These meteors can sometimes produce bright dust trails that last for several seconds. The nearly full moon will be a problem this year. Its glare will block out all but the brightest meteors. But if you are patient you may still be able to catch a few good ones. Best viewing will be from a dark location after midnight. Meteors will radiate from the constellation Lyra, but can appear anywhere in the sky.

April 27 - Full Moon, Supermoon. The Moon will be located on the opposite side of the Earth as the Sun and its face will be will be fully illuminated. This phase occurs at 03:33 UTC. This full moon was known by early Native American tribes as the Pink Moon because it marked the appearance of the moss pink, or wild ground phlox, which is one of the first spring flowers. This moon has also been known as the Sprouting Grass Moon, the Growing Moon, and the Egg Moon. Many coastal tribes called it the Fish Moon because this was the time that the shad swam upstream to spawn. This is also the first of three supermoons for 2021. The Moon will be near its closest approach to the Earth and may look slightly larger and brighter than usual.

May 6, 7 - Eta Aquarids Meteor Shower. The Eta Aquarids is an above average shower, capable of producing up to 60 meteors per hour at its peak. Most of the activity is seen in the Southern Hemisphere. In the Northern Hemisphere, the rate can reach about 30 meteors per hour. It is produced by dust particles left behind by comet Halley, which has been observed since ancient times. The shower runs annually from April 19 to May 28. It peaks this year on the night of May 6 and the morning of the May 7. The second quarter moon will block out some of the faintest meteors this year. But if you are patient, you should still should be able to catch quite a few good ones. Best viewing will be from a dark location after midnight. Meteors will radiate from the constellation Aquarius, but can appear anywhere in the sky.

May 11 - New Moon. The Moon will located on the same side of the Earth as the Sun and will not be visible in the night sky. This phase occurs at 19:01 UTC. This is the best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere.

May 17 - Mercury at Greatest Eastern Elongation. The planet Mercury reaches greatest eastern elongation of 22 degrees from the Sun. This is the best time to view Mercury since it will be at its highest point above the horizon in the evening sky. Look for the planet low in the western sky just after sunset.

May 26 - Full Moon, Supermoon. The Moon will be located on the opposite side of the Earth as the Sun and its face will be will be fully illuminated. This phase occurs at 11:14 UTC. This full moon was known by early Native American tribes as the Flower Moon because this was the time of year when spring flowers appeared in abundance. This moon has also been known as the Corn Planting Moon and the Milk Moon. This is also the second of three supermoons for 2021. The Moon will be near its closest approach to the Earth and may look slightly larger and brighter than usual.

May 26 - Total Lunar Eclipse. A total lunar eclipse occurs when the Moon passes completely through the Earth's dark shadow, or umbra. During this type of eclipse, the Moon will gradually get darker and then take on a rusty or blood red color. The eclipse will be visible throughout the Pacific Ocean and parts of eastern Asia, Japan, Australia, and western North America. (NASA Map and Eclipse Information)

Next Month's BAS Meeting: April 5, Monday. Zoom meeting(tentative), Presenter: TBA

Newsletter Contributions Needed

Our club newsletter is reaching more people each month, and member contributions in the form of short articles, interesting news items, alerts of upcoming astronomical events or activities, descriptions of personal observations or useful equipment, and observing tips, are encouraged. Recurring columns or multi-part articles are also welcome. Please submit your contributions to Mike Woods or to bvilleastro@gmail.com.

Bartlesville Astronomical Society is an organization of people interested in astronomy and related fields of science. Membership is open to everyone interested in any aspects of astronomy.

Elected Officers and Board Members: