August 2021 MAC Newsletter

What's Up in the August Sky - Dan Malone

Aug 01 Su Venus: 33.1 E

Aug 01 Su 10:00 Mercury Superior Conj.

Aug 02 Mo 1:24 Saturn Opposition

Aug 08 Su 9:50 New Moon

Aug 11 We 3:00 Moon-Venus: 4.4 S

Aug 12 Th 15:11 Perseid Shower:Z HR = 90

Aug 15 Su 11:20 First Quarter

Aug 19 Th 19:05 Jupiter Opposition

Aug 22 Su 8:02 Full Moon

Aug 30 Mo 3:13 Last Quarter

As the dog days of summer began to give way to cooler temperatures, the Algonquin fishing tribes converged on the great lakes and other major bodies of water to fish for sturgeon: massive, prehistoric fish that can grow to more than 12 feet long. Because these fish were such an important part of the tribes' survival, August's full moon came to be known as the Full Sturgeon Moon.

Tribes who lived farther south knew it as the Full Red Moon, because the sultry haze of late summer made the moon appear reddish in color. It was also called the Green Corn Moon or the Grain Moon, because late summer signified the beginning of the harvest, when food was put away for the cold months ahead.

August 12: The Perseids

Even casual skywatchers know about the Perseid meteor shower, because it can deliver at least one meteor per minute under pleasant summer skies. But the shower's peak performance is relatively brief, so timing is important. For North Americans, the shower's 2021 maximum should come on the evening of August 11th through the morning of the 12th. For North Americans, this shower can be enjoyed best as soon as its radiant (near the Double Cluster in Perseus) clears the northeastern horizon. This is also when you'll most likely see bright fireballs that skim Earth's atmosphere and create long, dramatic streaks in the sky. At that time the Moon will be a waxing thin crescent, so it will offer little interference. These meteors are bits of debris shed by Comet 109P/Swift-Tuttle, which orbits the Sun every 130 years. Careful observers first realized that the Perseids are an annual event in the 1830s.

July 2021 has been a good month for solar activity. Solar Cycle 25 crossed multiple thresholds, including its first X-flare and 6 active regions on the solar disk. The last time so many sunspots were seen at the same time was Sept. 6, 2017. One far side CME was so strong it affected Earth despite being on the wrong side of the sun.

Two more private space companies flew human payloads into sub-orbital space in July. Virgin Galactic on July 11 and Blue Origin on July 20. This is the beginnings of Space Tourism! (Right now a mere Quarter Million a ticket)

August Sky Charts:
Mid August looking South at 11pm EDT. Image created with SkySafari 6 for Mac OS X, �2010-2018 Simulation Curriculum Corp., skysafariastronomy.com.
Mid August looking North at 11pm EDT. Image created with SkySafari 6 for Mac OS X, �2010-2018 Simulation Curriculum Corp., skysafariastronomy.com.

Dan uses these informative websites on a regular basis to keep up with things happening in the sky:

Gives up to date information on comets, asteroids, mars rovers, NEO's and more.

Up to date activity on the sun, cosmic rays and their affects on the earth and us.

Space Trivia:

From The Planetary Society's The Planetary Report, June 2021 Solstice 2021:

The Moon, with a diameter of 2,159 miles, is larger than each of the dwarf planets, the largest being Pluto, with a diameter of 1,477 miles.

Announcements:

Our August meeting will be at 7pm on Monday, August 2nd.

For those joining us in-person at the Minnetrista Center, Minnetrista requires facial coverings and social distancing while inside the facility. I know some of you were giving information otherwise by the person at the front desk at the July meeting, but I checked with our contact, and that information was incorrect. Facial coverings ARE STILL REQUIRED, and prudent regardless of your vaccination status due to the developing situation with the Delta variant of COVID-19. Remember, safety first.

We will also conduct this meeting on Zoom from the Minnetrista Center. We continue to make changes to improve the audio experience.

Here is the Zoom meeting info:

https://us02web.zoom.us/j/86764507249?pwd=S3dnay92WFdGOUtXL2JONE45L1dTQT09

Meeting ID: 896 9730 1891

Passcode: 2869654

Bill Terhune is graciously allowing us to use his place in Yorktown (west of Muncie) for viewing the Perseid meteor shower. We will plan to meet there the night of Wednesday, August 11th. If the weather is bad that night, we'll try again the next night. Watch your email for more information and directions to come.

Facing South Mid-August at 11pm EST - Image created with SkySafari 6 for Mac OS X, �2010-2018 Simulation Curriculum Corp., skysafariastronomy.com.


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