November 2018 - Utah-Astronomy - mailman.xmission.com

Re: [Utah-astronomy] Last night's lecture
by Joe Bauman 11 Dec '18

11 Dec '18

Brent, speaking of the ISS, I have wondered if it could be put into an orbit that continuously cruised between Earth and Mars. When it swung by Mars it could drop off and retrieved crews. I don't see how the radiation would be any worse than the ISS crews are already exposed to. ------------------------------ On Wed, Feb 25, 2015 8:18 AM MST Brent Watson via Utah-Astronomy wrote: >I attended the lecture last night on trajectories. It was really a good, stimulating talk. Thanks for passing the word along. >There were some interesting side comments made about our launch capabilities and the Mars One effort. Mr. Adamo was not at all enthusiastic about the Mars One effort. His opinion is that the effort is doomed because there is not really a way to assure that folks going there would be safe - primarily from radiation. He has done some work with a former flight surgeon on designing a spacecraft to go to Mars. Their result is that in order to get sufficient shielding (using a water jacket), the spacecraft's mass would be around 380 metric tons. That is for a small crew, probably only about 5 members. For a point of comparison, the ISS mass is 400 metric tons. He made the comment that an astronaut who made this trip could only go to space once in this craft, and then he would be at the limit of radiation exposure for his life. The NASA limit is an increased risk of developing cancer of 5%. >That brings us to our current launch capability. Our latest heavy lift rocket - the one we are currently developing - will have the capability to lift 130 metric tons to a very low earth orbit. So low, in fact, that it would burn up at perigee. The Apollo 17 Saturn 5 rocket lifted 140 metric tons into earth orbit -- higher than the new rocket will go. (I am sorry, but my mind will not allow me to recall the name of our currently being designed rocket.) Recall that it took several dozen shuttle launches to assemble the ISS. The Mars One vehicle would require either a hugely more massive launch rocket or a similar effort to build the craft. >As I mentioned, it was a very intellectually stimulating lecture and did involve several ordinary differential equations. They were nicely explained in English by Mr. Adamo. This was the first time I have seen some real math put to Kepler's laws. There were many charts showing what it takes to leave the earth and go to the moon or Mars. It was a very well done lecture. >The above is my recollection of the lecture, and may not actually represent the opinions of Mr. Adamo. It is only my interpretation of what he said. He knows his stuff, that is apparent. Thanks Patrick and Dr. Sohl for passing the word along. >_______________________________________________ >Utah-Astronomy mailing list >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy > >Send messages to the list to >Utah-Astronomy(a)mailman.xmission.com > >The Utah-Astronomy mailing list is not affiliated with any astronomy club. > >To unsubscribe go to: >http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy >Then enter your email address in the space provided and click on "Unsubscribe or edit options".

15 22

Steve Coe RIP
by Chuck Hards 29 Nov '18

29 Nov '18

I received word that well-known amateur astronomer Steve Coe has passed. http://darkerview.com/wordpress/?p=25146

1 0

Re: [Utah-astronomy] Utah-Astronomy Digest, Vol 189, Issue 5
by RON VANDERHULE 16 Nov '18

16 Nov '18

Chuck, i gave it a shot around noon, with and without sunglasses. Nothing. Am i correct in assuming it is leading the Sun? Thanx for the heads up. I will try tomorrow Ron Sent via the Samsung Galaxy Note8, an AT&T 4G LTE smartphone -------- Original message -------- From: utah-astronomy-request(a)mailman.xmission.com Date: 11/16/18 12:00 PM (GMT-07:00) To: utah-astronomy(a)mailman.xmission.com Subject: Utah-Astronomy Digest, Vol 189, Issue 5 Send Utah-Astronomy mailing list submissions to utah-astronomy(a)mailman.xmission.com To subscribe or unsubscribe via the World Wide Web, visit https://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy or, via email, send a message with subject or body 'help' to utah-astronomy-request(a)mailman.xmission.com You can reach the person managing the list at utah-astronomy-owner(a)mailman.xmission.com When replying, please edit your Subject line so it is more specific than "Re: Contents of Utah-Astronomy digest..." Today's Topics: 1. Venus in daylight (chuck.hards) ---------------------------------------------------------------------- Message: 1 Date: Fri, 16 Nov 2018 11:01:00 -0700 From: "chuck.hards" <chuck.hards(a)gmail.com> To: Utah Astronomy <utah-astronomy(a)mailman.xmission.com> Subject: [Utah-astronomy] Venus in daylight Message-ID: <5bef05db.1c69fb81.4b238.435a(a)mx.google.com> Content-Type: text/plain; charset=utf-8 Venus has been a spectacular morning object for a while.Just now, 11:00 am, standing outdoors under a clear blue sky, I looked up, due south, about halfway to the zenith.? There was Venus!The sun was blocked by the eaves of a structure. I confirmed the fat crescent of Venus with a 12x30mm binocular.But it's plainly visible without optical aid.? I was wearing my prescription sunglasses.Give it a try and let us know if you succeed.?Sent from my Verizon, Samsung Galaxy smartphone ------------------------------ Subject: Digest Footer _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy(a)mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php ------------------------------ End of Utah-Astronomy Digest, Vol 189, Issue 5 **********************************************

4 3

Venus in daylight
by chuck.hards 16 Nov '18

16 Nov '18

Venus has been a spectacular morning object for a while.Just now, 11:00 am, standing outdoors under a clear blue sky, I looked up, due south, about halfway to the zenith. There was Venus!The sun was blocked by the eaves of a structure. I confirmed the fat crescent of Venus with a 12x30mm binocular.But it's plainly visible without optical aid. I was wearing my prescription sunglasses.Give it a try and let us know if you succeed. Sent from my Verizon, Samsung Galaxy smartphone

1 0

Utah Valley Astro Club November Meeting
by David Moulton 05 Nov '18

05 Nov '18

For our November UVAC meeting, we are pleased to welcome Dr. Darin Ragozzine, Assistant Professor of Physics at BYU. Dr. Ragozzine is principal or co investigator on a number of NASA projects. Here is his bio: https://www.physics.byu.edu/department/directory/ragozzine <https://l.facebook.com/l.php?u=https%3A%2F%2Fwww.physics.byu.edu%2Fdepartme…>. His presentation to us is titled "Striking Exoplanetary Gold: Systems of Multiple Transiting Exoplanets." All are welcome. This meeting will be held either in the UVU planetarium or a nearby classroom. https://utahvalleyastronomyclub.wordpress.com/resources/meeting-location/ <https://utahvalleyastronomyclub.wordpress.com/resources/meeting-location/?f…> Thursday, November 8, 7pm David Moulton

2 1

Pulsars
by Joe Bauman 03 Nov '18

03 Nov '18

Astro-folks might be interested in pulsars, the woman who discovered them 50 years ago, and the unfair system that denied her the Nobel Prize. This is in today's Deseret News, print edition and online. https://www.deseretnews.com/article/900040104/joe-bauman-the-discovery-of-p…

1 0

Site
by Joe Bauman 02 Nov '18

02 Nov '18

Does anybody know of a good Astronomy site near Kanab? Thanks, Joe Sent from my iPhone

2 1