Astronomy for RVers: Catch a shooting star

By Chris Fellows, Serenity Mobile Observatory

Let’s watch a meteor shower
One of the most thrilling events in the night sky is spotting a shooting star or meteor entering the Earth’s atmosphere and burning up in a fiery display. In this article we will explore what a meteor is and when is your best chance to see one.

Leonid Meteor, Wikipedia. Click for larger (colorful) image.

Meteors are generally small leftover chunks of debris from the formation of our solar system. Most are the size of large grains of sand up to something the size of a pea or larger. These hit the top of the atmosphere at around 50 to 75 miles up at speeds around 20 to 45 miles per second! Rarely a larger chunk encounters our atmosphere and will break up into several pieces as it decelerates, creating a spectacular multi-part fireball called a bolide. These are rare but I have seen a few in my years of looking up. In any case, the friction caused by the little bit of stone colliding with the air molecules heats the air into a plasma that glows very brightly for a second or two. These types of meteors happen every day. If you go out under a dark sky and lie back in a lounge chair for an hour you will most likely see one or more of these rogue visitors. More spectacular are the dates that the earth passes through a comet’s path – on these days you can expect quite a show. 

Geminids’ radiant point. Click for larger image.

When a comet falls in towards the sun it gets heated up by the sun’s energy and ice and other volatiles start to sublimate off its surface. This happens with quite a bit of energy and displaces material from the comet’s surface. These bits of rock and dust that have been locked up in the freezer for billions of years are liberated and fall into an orbit similar to the comet but are strung out far behind the parent object. This bread crumb trail of detritus continues to orbit the sun until it encounters something else, like the earth. The earth passes through several of these dusty trails every year as we circle the mother star and on those nights we can get quite a show. The great thing about this mechanical process is that it is predictable. We know where the dust trails are and we know when the earth will encounter them. We call these night meteor showers and there are no less than 10 strong showers per year.

Meteor showers are named for the constellation that they seem to radiate from. As the earth orbits the sun it has a particular direction and depending on the time of year there is a stellar constellation in that direction. When the earth passes through the river of dust left behind by the comet, the meteors will seem to radiate from that constellation so we call the shower by the name of the constellation. The table below gives the shower’s name, the constellation it radiates from, the best day of the year to see the most meteors, the estimated meteors per hour rate, and the parent comet name. The Geminids in December seem to be the most energetic this year.

To watch one of these showers you need nothing more than your eyeballs and a bit of patience. In my opinion, the best way to watch these is to throw a barbecue the afternoon of the shower and invite several friends over. After sundown, arrange your lounge chairs in a circle with everyone facing outward but with all your heads together. Make sure you have a good supply of your favorite beverage at hand, lie back and call out the meteors as you see them. It’s a lot of fun and you will hear many oohs and aahs as your friends and family spot meteors. Let me know if you have a shooting star party and how it went. Better yet, if I am in your area invite me over – I would love to watch one of these with you.

Till next time  …

Clear Skies,
Chris Fellows, Serenity Mobile Observatory

Find Chris on Facebook (or, if you’re lucky, at your campground). (Editor: Check out his amazing photos on his Facebook page!)

##RVT835

 

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23 Thoughts to “Astronomy for RVers: Catch a shooting star”

  1. Bruce McDonald

    Great article. I am an avid chaser of meteor showers.
    One comment and one question. The phase of the moon is important – darker is always better. In 2018 the moon phase will be favorable for the Persieds and Geminids – so for two of best showers of the year.! With that in mind I am already thinking about where I will be for those showers.
    Does any one have experience finding dark sky in the Rio Grande Valley (Far South West Texas)? We will be in Mission next December and I really want to find dark site for the Geminids. Big Bend National Park is Fabulous – but a long way from Mission.

    1. Bruce McDonald

      South EAST Tx. I meant.

  2. glenn vargas

    Thank you for your article. I think astronomy and RVing make a perfect match.

  3. Dana

    I used to watch with my brother in Howell, Mi!
    Love you brother

    1. Serenity Mobile Observatory

      Love you too sister.. Thanks for the post!

  4. John Zoz

    Chris, thanks for the wonderful article, love following you and your amazing images. Hoping to catch up with you out on the road! Cheers, John

    1. Serenity Mobile Observatory

      I am really glad you enjoyed this John. Keep an eye on my outreach page and when we get close send me an IM or post on the page and we can hook-up for some viewing!

  5. Brian

    Great pictures and information. Thanks

    1. Serenity Mobile Observatory

      Thank you Brian, I am glad you enjoyed it.

  6. Alice Valentine

    That’s incredible!

    1. Serenity Mobile Observatory

      Thanks!

  7. Elyse Guevara

    Nicely written, Chris!

    1. Serenity Mobile Observatory

      Thanks a lot Elyse, I am glad you like it.

  8. Rose Sechrest

    Chris, I absolutely LOVE following your stories! Not only are the pictues phenominal…. the stories are very well articulated! I’ve never really looked at astronomy until I started following You! Now….I’m hooked!

    1. Serenity Mobile Observatory

      So glad to hear it Rose. I hope you get out and watch one of the showers this year!

  9. Tony

    Great article Chris. Every summer we watched the Persieds from our lounge chairs by the pool in OC, MD. Thanks for the reminder.

    1. Serenity Mobile Observatory

      Thanks Tony! I will be with you in spirit at least during the next shower..

  10. Leanne

    Great article! I do photography but haven’t ventured out to capture some meteor showers! think I might start doing that!
    Thanks for the article!

    1. Serenity Mobile Observatory

      You absolutely should give that a try. I recommend taking a look at an article here in Sky and Telescope to give yourself a head-start for the next shower. Check it out! http://www.skyandtelescope.com/astronomy-blogs/capturing-the-perseids-how-to-photograph-a-meteor-shower/

  11. John Adler

    Another good article. Go out and check the pictures that Chris posts.

    1. Serenity Mobile Observatory

      Thanks John, I am glad you enjoyed it.

  12. Cathy K. Adler

    Love watching meteor showers. Good article! Thanks!

    1. Serenity Mobile Observatory

      I love watching them also, especially with good friends and good drink! Have a great day Cathy..

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