Monday, August 10, 2020

Annual Perseid Meteor Shower Peaks Tue. Night / Early Wed. Morning

    
A short, cropped video-clip of a Perseids meteoroid (at the bright head of the "shooting-star" trail) entering the Earth's atmosphere in slow-motion (x0.1). The meteoroid measured about 0.39-inch / 10 milimeters. This video, aimed at the Constellation Camelopardalis, was taken from Berlin on 2019 August 14.
(Image Sources: Wikipedia.org, By Bautsch - Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=81371519)

By Glenn A. Walsh
Reporting for SpaceWatchtower

This year's Perseid Meteor Shower, which peaks Tuesday evening / early Wednesday morning, is considered the best meteor shower of the year. And, this peak could stretch into Wednesday evening / early Thursday morning.

The peak of the Perseid Meteor Shower, this year, actually occurs Wednesday Morning, 2020 August 12 at 9:00 a.m. Eastern Daylight Saving Time (EDT) / 13:00 Coordinated Universal Time (UTC). However, the best time to watch most meteor showers, including this year's Perseids, is always between local midnight and dawn, when the Earth is rotating into the meteor shower.

At the peak time, sometimes up-to 50-to-100 meteors could possibly be seen per-hour, if observing conditions are ideal. Depending on your location, weather conditions, and the condition of your eye-sight, seeing 50-to-60 meteors per-hour would be more likely.

As most meteors are often dim, it is best to view a meteor shower away from city lights, which cause a brightening of the sky at night, and hence, the dimmest meteors are often missed. And, you want to go out ahead of time, before you start actual viewing of meteors, to get your eyes accustomed to the dark sky. Dark-adapting your eyes for meteor watching could take up-to one half-hour.

For the Perseid Meteor Shower at this time, the Moon will be in a Waning Crescent Phase, having just passed the primary lunar phase of Last Quarter the previous day (Tuesday, 2020 August 11) at 12:45 p.m. EDT / 16:45 UTC. Although the Moon will be visible for most of the early Wednesday morning hours, there should not be quite as much reflected sunlight from the Moon to obscure the dimmer meteors. Try not to look directly at the Moon, so it does not hinder your dark-adapted eye-sight.

Actually, some meteors from the Perseid Meteor Shower can be seen as early as mid-July and as late as late August (~July 17 to August 24); but they are few and far between. Most Perseid meteors can be seen three-to-five days before and three-to-five days after the peak time, which is considered, approximately, between August 9 and 14 each year.

Viewers in the Northern Hemisphere are fortunate that the Perseid Meteor Shower arrives during the Summer month of August, when temperatures are comfortable for night-time viewing. However, some locations (such as in the mountains) could be cooler in the early-morning hours. So, be sure to check your local weather forecast (with NOAA Weather Radio, local radio or television, or the Internet) and bring a sweater or jacket with you if your location has a cooler forecast.

Be aware that sometimes August can be very humid with poor seeing conditions. And, the closer to the horizon, the worse the seeing conditions could be.

Binoculars and telescopes are not very useful for finding meteors. Meteors streak across the sky in a very brief period of time, too short to aim binoculars or a telescope. So, the best way to view a meteor shower is to lie on the ground (perhaps on a blanket, sheet, or beach-towel—or possibly in a reclining beach or lawn-chair), in an area with a good view of the entire sky (with few obstructions such as buildings, trees or hills, perhaps at a higher elevation), and keep scanning the entire sky with your naked-eyes (one-power).

Meteor showers appear to emanate from a radiant point in the sky. For the Perseid Meteor Shower, the radiant appears to be within the Constellation Perseus, named for the hero of Greek mythology. However, you should not, necessarily, be looking only at Perseus, when looking for meteors in this shower. Meteors can appear in any part of the sky at any time. In fact, looking towards Perseus may not result in finding the best meteors, as meteors coming from the apparent radiant may be seen for a shorter time in the sky.

A meteor shower normally consists of dust particles related to a comet. Each time a comet approaches the Sun, the comet loses dust particles following the melting of ice on the comet. These dust particles, called meteoroids, continue to follow the same orbit as the comet and form a meteoroid stream. Each year, as the Earth orbits the Sun, the Earth passes through several of these meteoroid streams, becoming Earth's meteor showers.

The Earth's gravity then attracts many of these meteoroids to fall to Earth, and they are viewed by people as meteors, as they burn-up, often high in the atmosphere. Most are extremely small and burn-up completely. From time-to-time, larger particles enter the atmosphere and create brilliant displays known as fire-balls. If these particles are large enough, they may not completely burn-up and land on Earth as a meteorite.

Meteors can be seen any night of the year, although they are not predictable and are rare outside of one of the annual meteor showers. The vast majority of meteors that can be seen during the Perseid Meteor Shower originate from the Comet Swift-Tuttle, which has an orbital period of 133 years, leaving behind a trail of dust and grit. Comet Swift-Tuttle was discovered in 1862 and last returned for viewing in 1992.

Comet Swift-Tuttle measures about 16 miles / 25 kilometers across, much larger than the object that is thought to have fallen to Earth which resulted in the extinction of the dinosaurs (about 6 miles / 10 kilometers across) approximately 66 million years ago (after living on Earth for about 165 million years!).

Comet Swift-Tuttle will make a very close approach to the Earth in the year A.D. 4479. Scientists are now studying whether some day Comet Swift-Tuttle could impact the Earth. Comet Swift–Tuttle has been described as "the single most dangerous object known to humanity".

So, the time for viewing is right, and the less moonlight is great. And, of course, with the warm weather most of us experience in the Northern Hemisphere, this time of year, what could be better for viewing meteors?

Of course, meteor showers, like all celestial observations, are weather-permitting. Even a few clouds could obscure quite a few meteors.

If the weather in your area does not permit direct viewing outdoors of this meteor shower, it is possible (but not guaranteed) you may be able to use Google, Yahoo, Bing, Lycos, or your favorite Internet search engine to find special web-casts of the meteor shower at one or more sites on the Internet.

A cautionary note for those who find it necessary to watch the meteor shower on the Internet. The video camera, used for each web-cast, can only aim at one part of the sky at a time. Hence, do not expect to see as many meteors as you might see with your own eyes outside. Outdoors, you can easily scan the entire sky for meteors, while a camera aimed at one area of the sky will only be able to see the meteors that enter that particular field-of-view.

Internet Links  to Additional Information ----

Perseid Meteor Shower: Link >>> https://en.wikipedia.org/wiki/Perseids

Comet Swift-Tuttle: Link >>> https://en.wikipedia.org/wiki/Comet_Swift%E2%80%93Tuttle

Constellation Perseus: Link >>> https://en.wikipedia.org/wiki/Perseus_%28constellation%29

Meteor Shower: Link >>> https://en.wikipedia.org/wiki/Meteor_shower

Meteor: Link >>> https://en.wikipedia.org/wiki/Meteoroid#Meteor

Meteoroid: Link >>> https://en.wikipedia.org/wiki/Meteoroid

Meteorite: Link >>> https://en.wikipedia.org/wiki/Meteoroid#Meteorites

Fifth largest fragment of the meteorite which struck Barringer Meteor Crater near Winslow, Arizona, which was displayed (1939 to 1991) at the original Buhl Planetarium and Institute of Popular Science (a.k.a. Buhl Science Center), Pittsburgh's science and technology museum from 1939 to 1991. Today, this meteorite is displayed on the second floor of Pittsburgh's Carnegie Science Center, next to the Henry Buhl, Jr. Planetarium:
Link >>> http://buhlplanetarium2.tripod.com/Buhlexhibits.htm#meteorite

Related Blog-Posts ---

"Tonight's 'Meteor Outburst' w/Web-Casts: 150 Years After Comet-Meteor Shower Link Found." Thur., 2016 Aug. 11.

Link >>> https://spacewatchtower.blogspot.com/2016/08/tonights-meteor-outburst-wweb-casts-150.html

 

"Great Perseid Meteor Shower Peaks Wed. Night w/ Web-Casts." Wed., 2015 Aug. 12.

Link >>> https://spacewatchtower.blogspot.com/2015/08/great-perseid-meteor-shower-peaks-wed.html

 

"Perseid Meteor Shower Peaks in Sky & Web-Casts." Tue., 2014 Aug. 12.

Link >>> https://spacewatchtower.blogspot.com/2014/08/perseid-meteor-shower-peaks-in-sky-web.html

 

"Perseid Meteor Shower Peaks Sun., Mon. Nights." Sat., 2013 Aug. 10.

Link >>> https://spacewatchtower.blogspot.com/2013/08/perseid-meteor-shower-peaks-sun-mon.html


Source: Glenn A. Walsh Reporting for SpaceWatchtower, a project of Friends of the Zeiss.
              Monday, 2020 August 10.

                             Like This Post?  Please Share!

           More Astronomy & Science News - SpaceWatchtower Twitter Feed:
            Link >>> https://twitter.com/spacewatchtower

        Astronomy & Science Links: Link >>> http://buhlplanetarium.tripod.com/#sciencelinks

                Want to receive SpaceWatchtower blog posts in your in-box ?
                Send request to < spacewatchtower@planetarium.cc >.

gaw

Glenn A. Walsh, Informal Science Educator & Communicator:
http://buhlplanetarium2.tripod.com/weblog/spacewatchtower/gaw/ >
Electronic Mail: < gawalsh@planetarium.cc >
Project Director, Friends of the Zeiss: < http://buhlplanetarium.tripod.com/fotz/ >
SpaceWatchtower Editor / Author: < http://spacewatchtower.blogspot.com/ >
Formerly Astronomical Observatory Coordinator & Planetarium Lecturer, original Buhl Planetarium & Institute of Popular Science (a.k.a. Buhl Science Center), Pittsburgh's science & technology museum from 1939 to 1991.
Formerly Trustee, Andrew Carnegie Free Library and Music Hall, Pittsburgh suburb of Carnegie, Pennsylvania.
Author of History Web Sites on the Internet --
* Buhl Planetarium, Pittsburgh:
  < http://www.planetarium.cc >
* Adler Planetarium, Chicago:
  < http://adlerplanetarium.tripod.com >
* Astronomer, Educator, Optician John A. Brashear:
  < http://johnbrashear.tripod.com >
* Andrew Carnegie & Carnegie Libraries:
  < http://www.andrewcarnegie.cc >

11 comments:

  1. https://aboutblooks.blogspot.com/2015/01/save-date-for-grolier-club-exhibition.html?showComment=1597385846181#c8595893253235596938

    ReplyDelete
  2. This comment has been removed by a blog administrator.

    ReplyDelete
  3. This comment has been removed by a blog administrator.

    ReplyDelete
  4. I actually was told otherwise, that the herpes can not be treated and that there is no way to make it go away once you have it. But I decided to do my own research and found out it is possible to fight it.. I got a lot of information about it here in forums and online,I got Dr Oje Abacha contact on a group were a man from Cordova was sharing his testimony of how he cured him of herpes so I decided to give him a try I emailed him through oje.herbalsolutioncentre@gmail.com . he called me to know if I actually wanted the cured after which the cure was sent to me few days later I was surprised when the same doctor who told me that I was diagnosed of herpes told me that I was completely free from herpes you can reach him through his email oje.herbalsolutioncentre@gmail.com . or through his WhatsApp +2348159734766 if you are diagnosed and also wanna be free from this deadly virus because he is really gonna be of help to you  

    ReplyDelete
  5. شركة نقل عفش
    اهم شركات مكافحة حشرات بالخبر كذلك معرض اهم شركة مكافحة حشرات بالدمام والخبر والجبيل والخبر والاحساء والقطيف كذلك شركة رش حشرات بالدمام ومكافحة الحشرات بالخبر
    شركة مكافحة حشرات بالدمام
    شركة تنظيف خزانات بجدة الجوهرة من افضل شركات تنظيف الخزانات بجدة حيث ان تنظيف خزانات بجدة يحتاج الى مهارة فى كيفية غسيل وتنظيف الخزانات الكبيرة والصغيرة بجدة على ايدى متخصصين فى تنظيف الخزانات بجدة
    شركة تنظيف خزانات بجدة
    شركة كشف تسربات المياه بالدمام
    شركة نقل عفش واثاث

    ReplyDelete
  6. Am Laura Mildred by name, i was diagnosed with Herpes 4 years ago i lived in pain with the knowledge that i wasn't going to ever be well again i contacted so many herbal doctors on this issue and wasted a large sum of money but my condition never got better i was determined to get my life back so one day i saw Mr. Morrison Hansen post on how Dr. Emu saved him from Herpes with herbal medicine i contacted Dr. Emu on his Email: Emutemple@gmail.com we spoke on the issue i told him all that i went through and he told me not to worry that everything will be fine again so he prepared the medicine and send it to me and told me how to use it, after 14 days of usage I went to see the doctor for test,then the result was negative, am the happiest woman on earth now thanks to Dr. Emu God bless you. Email him at: Emutemple@gmail.com Whats-app or Call him +2347012841542 

    ReplyDelete
  7. God bless Dr. USELU for his marvelous work in my life, I was diagnosed of HERPES SIMPLEX VIRUS since 2018 and I was taking my medications, I wasn’t satisfied i needed to get the HERPES out of my system, I searched about some possible cure for HERPES i saw a comment about Dr. USELU , how he cured HERPES with his herbal medicine, I contacted him and he guided me. I asked for solutions, he started the remedy for my health, he sent me the medicine within 3 days. I took the medicine as prescribed by him and 2weeks later i was cured from HERPES contact him via email (dr.uselucaregiver@gmail.com) once again thanks to you Dr. USELU cure the flowing virus, contact his email or add him on whatsapp (+2347052898482) cancer cure
    diabetes cure
    ringing ear
    herpes cure
    warts cure
    HPV cure
    HIV cure
    get your ex back
    pregnancy herbal medicine
    Hepatitis    

    ReplyDelete
  8. Quick Cure I will advise you to contact Dr KHAM AT (dr.khamcaregiver@gmail.com ) where all problems are solved without stress and delay. My family was getting drawn in sickness, we were all affected one after the other and medical prescription was not helping us. Till a friend's doctor directs us to contact Dr KHAM for quick cure and total cleaning. Dr KHAM is a miracle worker. It is never too late with Dr KHAM contact him today with { dr.khamcaregiver@gmail.com  } you can also contact him on Whatsapp +2348159922297, You can Also Visit his website to know more about him at > https://drkhamcaregiver.wixsite.com/drkhamcaregiverherba
    He also Cure
    1) HIV/AIDs Virus
    2) Hepatitis B and C
    3) Herpes
    4) Cancer
    5) ZIKA VIRUS
    6) COPD
    7) STROKE.
    8) Erectile Dysfunction
    9) Trichomoniasis
    10) Chlamydia
    11) Gonorrhea
    12) HPV
    13) Syphilis  

    ReplyDelete
  9. FINALLY FREE FROM HERPES VIRUS
    I thought my life had nothing to offer anymore because lifebecame meaningless to me because I had Herpes virus, thesymptoms became very severe and bold and made my familyrun from and abandoned me so they won't get infected. I gaveup everything, my hope, dreams,vision and job because thedoctor told me there's no cure. I consumed so many drugs butthey never cured me but hid the symptoms inside me makingit worse. I was doing some research online someday when Icame across testimonies of some people of how DR Ebhotacured them from Herpes, I never believed at first and thoughtit was a joke but later decided to contact him on the detailsprovided and when I messaged him we talked and he sent mehis herbal medicine and told me to go for a test after twoweeks. Within 7 days of medication the symptomsdisappeared and when I went for a test Lo and behold I wasNEGATIVE by the Doctor Who tested me earlier. Thank you DREbhota because I forever owe you my life and I'll keep ontelling the world about you. If you are going through samesituation worry no more and contact DR Ebhota viadrebhotasolution@gmail. com or WhatsApp him via +2348089535482.he also special on cureing 1. HIV/AIDS2. HERPES 3. CANCER 4.ALS 5. HEPATITIS B 6.DIABETES 7. HUMAN PAPILOMA VIRUS DISEASE(HPV)8. ALZHEIMER 9. LUPUS (Lupus Vulgaris or LupusErythematosus

    ReplyDelete