How Far Away Is It - Chapter 4 - Comets and the Heliosphere (4K)

In this segment of our video book, we cover the Sentinels of the Heliosphere fleet; the distance to the edge of our Sun’s solar wind; the Aurora Borealis, Comets, the Kuiper Belt and the Oort Cloud.

We start by defining the limits of the Sun’s influence, including the Termination Shock, Heliopause, Heliosheath, and the Bow Shock. Voyager 1 and Voyager 2 progress is reviewed.

Next, we cover the near-Earth fleet of satellites Hinode, RHESSI, TRACE, and FAST; the Magnetosphere satellites Cluster 1 through 4 plus Geotail; the Sun observers Stereo A and Stereo B; the solar wind observers orbiting Lagrange Point 1 – ACE, Wind, and SOHO; and back to the Magnetosphere with THEMIS A through E; and back again to Voyager 1 and 2. We conclude with a look at the big November 2011 solar storm observed by Stereo.

We then cover the nature of the Aurora Borealis and Aurora Australis. This includes the Bohr atomic model where we explain the quantum jumps in high altitude Oxygen atoms that create photons.

Next we cover what a comet is and the history of comets including the Great Comet of 1577 studied by Tyco Brahe and the many comets that became Halley’s Comet. We then examine comet orbits including the long period comets Siding Spring, Hale-Bopp and Lovejoy 2014, and the short period comets 67P, Encke and Halley’s Comet.

These two kinds of comet orbits along with evaporating comets leads us to the Kuiper Belt and Oort Cloud as areas that generate new comets. We end the segment on comets with a look at Shoemaker Levy crashing into Jupiter and the Rosetta Mission to 67P.

We conclude with a review of the Solar System distances we have covered in this and the previous segments.

Music:
@ 00:00 - Williams, John: Braveheart End Credits; London Symphony Orchestra from the album “Braveheart - London 1995”

@ 07:51 - Debussy, Claude: Petite Suite, L.65 - 1. En bateau; Ernest Ansermet & L'Orchestre de la Suisse Romande; from the album “For the Hopeless Romantic”, 2005

@ 11:51 - Williams, Vaugan: Fantasia On A Theme By Thomas Tallis; Royal Philharmonic Orchestra; from the album “Britten/Vaughan Wil-liams/Tippett”, 1990

[losttribe]

What a pleasant way to enjoy my morning; coffee and this video.

[joelgarlejo]

Mr David Butler u sir have made me more aware of my special interest of our space and beyond like no other teacher !

[rasmusquirosfihn]

This indie-documentary is one of the best documentary about cosmos PERIOD. That says a lot since i have seen more than i can count. But after this iam sure able to count or measure it hehe. A perfect serie of knowledge for an amateur hobby-astronomer from Sweden. Thank alot for sharing your wisdom to us in the younger generation, good sir!

[sniffy]

Had a lousy day but came home to a new David Butler it's getting better, gets things back in perspective.

[vikranttyagiRN]

This channel is a Hidden Gem. Absolutely phenomenal stuff. Please keep it up

[syla-xl]

YouTube award should be given to D.Butler!! I have been following many channels in this field so far best ever, can’t get better than this, vast knowledge of space amazing skill and unconditional love for teaching. We should appreciate it.

[mvdeehan]

Anyone with even the slightest interest in the Sun, Comets, or Astronomy and what science has been and is doing should look at this wonderful video from David Butler. His video series are about the best on these topics that I have seen on YouTube. As the Sun barrels through space taking all it’s planets and comets with it, us included, most of us live our daily lives oblivious to what is going on. David’s helpful illustrations will make it clear. Just wonderful.

[kellir.adkins]

I listen to him going to sleep, in my headphones while Comet, I was 6 years old and my daddy rolled up a Bass Pro Shop magazine and we went outback where there was no light pollution and he showed Her. Told me my children will see it the next time it orbited. That sparked my love, my refuge and my sanctuary in the cosmos. I cant imagine what my life wud have been like had I never learned about space at such a young age. My 3 children love it and when my daughters was little girls they could name all planets and tell you facts about space. I love it. This man is amazing. Awesome voice too.

[googeeish]

Perfect. Thank you. No goofy music or animation. Just the facts.

[benjamincrom]

Thank you so much for all your work Sir. It was awesome watching this over a cup of coffee before work today, I'll carry the perspective throughout the entire day now.

Have a wonderful day.

[marioarrizon]

first class quality information, in an excellent format, we cannot underestimate the value of this exposition.

[lakinsanmi]

Thank very much Dr. Butler, highly appreciate your videos - spectacular, awesome and fantastic!!!

[jamesselario]

This is probably the best space content on YouTube. You are a gifted educator and I thank you for providing this content. Your How Far Is It series (and all of them really) are my favorite videos on YouTube.

[theforgottenhero]

Since I was small, I saw David vidoes and also Sagan Series, and Jacques custeau series, ... All of them, great reserchers. David have a calm voice, and teach astronomy majestically. You are our best astronomy teacher David XD

[yardmstr]

I really appreciate these videos; they really help me understand what a spec of dust on a spec of dust on a spec of dust on a spec of dust on a neutron we are in the universe! Keep up the great work; I love the classical music you play in the background of all your videos!

[MrCigarro]

Your videos are beyond perfection. Thank you very much.

[matycee]

This is, without a doubt, one of the very best explanations both in visual aid and verbal delivery on youtube, regarding the subjects detailed. Bravo.

[benoonwheels]

Omg how have I only just found this channel. The way you articulate is bloody amazing. Thankyou so much for your work. Can’t wait to catch up with all your vids.

[matt_the_trucker]

How can 72 ppl dislike this? This is awesome and broken down for even dummies like me to comprehend

[morganstern]

Thats for the reminder... science and space are breathetaking