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The Betelgeuse Summer Problem

03 Monday Feb 2020

Posted by Paul Kiser in Astronomy, NASA, Nevada, Reno, Science, Space, United States

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2020, AAVSO, American Association of Variable Star Observers, astronomy, astrophysicist, astrophysics, Betelgeuse, constellation, Orion, Star, stellar, Summer, supernova, supernovae

The star Betelgeuse is doing something. Something important. No one is sure what it means, but it has our attention and we want to keep our telescopes focused on it. Except that this Summer, we can’t.

What’s next for Betelgeuse? [NOTE: Image distorted by minor camera movement.]

Whatever is happening with the soon-to-be supernova Betelgeuse currently, it is critical astronomers and astrophysicists maintain close observation of the progenitor star. It may be decades, centuries, or millennia before it collapses and explodes into a spectacular show for our planet nestled some 640 lightyears away, and yet, at this moment, it is displaying behavior that may give us the first opportunity to learn what a supernova does before it does its supernova thing.

Betelgeuse and its parent constellation, Orion, are victims of the Earth’s orbit around the Sun. For two months in the Summer (approximately Cinco De Mayo to Independence Day in the U.S.) the constellation is on the opposite side of the Sun from Earth. Astronomers will not be able to see the star at a time that may be crucial to understanding pre-supernova behavior.

Betelgeuse is a variable star that is undergoing a historic expansion, cooling, and dimming (fainting) phase. That process is likely near the end. Next up should be a contraction, warming, and brightening phase. That process will take months…right into Summer. When the curtain drops on Betelgeuse in May, Earth-bound astronomers and astrophysicists will be an audience without a show to watch.

Graphic 1.0 – Betelgeuse variable star cycle (hypothetical 2020 brightening cycle in blue.)

There are multiple possibilities for what might happen. Betelgeuse might increase in brightness over several weeks or months as it has in the past, then resume a normal cycle. It might brighten, but not to the magnitude it has in past cycles. The star might keep brightening to a greater magnitude than it has in the past. Betelgeuse might also brighten suddenly and begin its short-lived supernova phase. No one knows.

What is known is that astronomers will be observing Betelgeuse as long as possible. We will know if something major happens this Summer through other electromagnetic observations and non-Earth bound observation sources, but for amateur astronomers, we will have to wait and not see.

Betelgeuse is NOT Collapsing, It’s Expanding [NOTE: THIS IS IN ERROR]

24 Friday Jan 2020

Posted by Paul Kiser in Astronomy, Exploration, History, Photography, Science, Space, Universities

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astronomy, astrophysicist, astrophysics, Betelgeuse, Boyle's Law, Charles' Law, Combined and Ideal Gas Laws, constellation, contracting, expanding, Orion, stars, stellar collapse, supernova

[Author’s Note:  This article is in error. I somehow misread the information provided in the Astronomer’s Telegram post stating that the star was decreasing in size. I discovered the error a few days after I posted the article. Since the premise of the article is incorrect, the entire article can be disregarded. Rather than delete the article, I am posting this announcement and leaving the original article intact. I apologize for any confusion or misunderstanding this article may have caused.]

Betelgeuse Collapsing? Think Again

The buzz about Betelgeuse is about its sudden and historic fainting (dimming.) Those who have a knowledge of the star and of supernovas have received the news with anticipation. Is this the great moment of Betelgeuse going supernova? Many people already know that immediately before the supernova, the progenitor star (the original star before a supernova) collapses in on itself. Betelgeuse is dramatically dimming, so it must be collapsing. Not true. Betelgeuse is expanding.

Dimming and Expanding Betelgeuse on 22 January 2020

Expanding Betelgeuse

Betelgeuse is dimming, but it is also cooling. Down approximately 100°K (180°F) in the past four months. This is an issue of physics. Temperature increases with increased pressure and the temperature decreases as the pressure decreases. The collapsing mass of a star increases pressure and temperature [¹SEE:  Primer on Combined and Ideal Gas Laws below.] The expansion of a star would cause a decrease in temperature. Betelgeuse temperature is decreasing, therefore astronomers believe it is expanding, not collapsing.

…Betelgeuse is currently the coolest and least luminous yet observed. Since September 2019, the star’s temperature has decreased by ~100 K while its luminosity (inferred from the C-band/m-bol observations) has diminished by nearly 25%.

Edward F. Guinan and Richard J. Wasatonic
Posted in The Astronomer’s Telegram 20 January 2020

No Joy On A Neighborhood Supernova?

Does this mean that Betelgeuse is not about to go supernova? Nobody knows. This could be the last big push outward before the finale we’ve been anticipating. It could also be another step toward the end but not the last gasp of Betelgeuse.

Betelgeuse in the Orion constellation

It is unusual behavior and worthy of constant monitoring. This may be one part of the process that will help us understand the last days, weeks, months, and years of a supergiant red star. Stars don’t suddenly brighten or dim without reason and now we have the opportunity to discover something new and visibly intriguing about the process of a star’s death.

What’s happening? Something wonderful.

[¹Primer on Combined and Ideal Gas Laws ]\qquad {\frac {P_{1}V_{1}}{T_{1}}}={\frac {P_{2}V_{2}}{T_{2}}}.]

NASA’s Orion Capsule: A ‘Look Busy’ Project?

19 Friday Jan 2018

Posted by Paul Kiser in 1968, Ethics, Government, History, Honor, Management Practices, NASA, Politics, Pride, Public Image, Public Relations, Science, Space, Technology, US History

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Airbus, Amber Gell, Amy Shira Teitel, Apollo, cosmic radiation, Curious Droid, Earth, engineer, Gemini, Kelly Smith, Lara Kearney, LEM, Lockheed Martin, lunar module, manned space program, manned spacecraft, Mars, Mercury, Moon, NASA, orbit, Orion, Paul Shillito, Space Shuttle, spacecraft, STS-135, Van Allen Belts, Vintage Space

NASA has a publicity campaign for the next generation of spacecraft. It is the Orion capsule, and it is touted as the spaceship that will take us back to the Moon and beyond. The problem is that all the talk doesn’t match reality.

8 July 2011, STS-135 – The final launch of a USA spacecraft

On 8 July 2011, I stood several miles away from Kennedy Space Center and watched the end of the United States manned spacecraft program. I stood in the warm sunshine of Florida as the last Space Shuttle (STS-135) soared into the sky. Since then NASA has put our astronauts in space by paying Russia to take them to and from the International Space Station (ISS.) 

A few months before that last Space Shuttle flight NASA announced the development of a new spacecraft called Orion. The announcement came so abruptly that it seemed that NASA was unaware it wouldn’t have a spacecraft to send humans into space until just before the end of the Space Shuttle program.

Orion – A Spacecraft of Contradictions

The Orion program, for all its hype, seems to have major flaws that NASA doesn’t seem to notice, or perhaps, hopes the public won’t notice. NASA’s description of the purpose of Orion:

For the first time in a generation, NASA is building a human spacecraft for deep-space missions that will usher in a new era of space exploration…and this new spacecraft will take us farther than we’ve gone before, including to the vicinity of the Moon and Mars…the Orion spacecraft is designed to meet the evolving needs of our nation’s deep space exploration program for decades to come. Orion deep space exploration missions…will help put NASA and America in a position to unlock the mysteries of space and to ensure this nation’s world preeminence in exploring the cosmos.

Orion a USA Spacecraft????

Lockheed Martin Corporation is designing and building the capsule of Orion. Like the Apollo capsule, Orion can only be separated from the Service Module for a short period of time.

The Service Module is the business section of Orion. It supplies all the power, fuel, oxygen, and is the primary propulsion of the spacecraft. Anyone familiar with Apollo 13 knows what happens to the capsule when the Service Module is non-functioning. The Service Module is being built by Airbus, a French corporation, for the European Space Agency.

Orion Capsule: A Human Storage Shed in Space

In Space, Size Matters

The Apollo capsule had a volume of 5.9 m³ (210 ft³.) Apollo astronauts were able to use the 6.7 m³ (235 ft³) space in the Lunar Module (LEM) during the three day trip between Earth and Moon. The total volume of the Apollo capsule and LEM was 12.6 m³ (445 ft³) for three astronauts. On the return, the Apollo astronauts were restricted to the capsule. Each astronaut had about 2 m³ in the capsule or 4 m³ in the capsule/LEM configuration.

Orion has 8.95 m3 (316 cu ft) of habitable space for four astronauts. This is slightly more cubic meters per astronaut than the Apollo capsule and much less than Apollo’s capsule/LEM configuration. The idea that Orion is capable of taking four astronauts on an eight-month journey to Mars is absurd. Orion is only for use in short-term, near-Earth missions.

NASA has briefly acknowledged the space issue in a video. Amber Gell of Lockheed Martin briefly touches on the need for an add-on crew habitat. She implies that it is an issue that NASA has yet to address. If it takes NASA twelve years to design and build a slightly bigger version of the 1960’s Apollo spacecraft, how long will it take them to build a crew quarters that four people can live in for up to three years?

NASA’s Misleading Video about Orion

NASA has been pumping out videos of engineers explaining how Orion is the next great achievement of the space agency. The videos cover a variety of subjects and some are pre-test and post-test news releases of Orion’s systems and structure. One video features Kelly Smith, a NASA Engineer, who explains how Orion is being designed to deal with the radiation from the Van Allen Belts around Earth.

The 2014 NASA video, titled, “Orion: Trial By Fire,” describes the challenges of the first test flight, including a dramatic description of the dangers of flying through the radiation of the Van Allen Belts above Earth. He explains that Orion will be designed to protect the astronauts as they fly through these dangerous regions.

The problem is that NASA already solved that problem with Apollo. They either fly around the Van Allen Belts, or through the thinner sections, as described by a video by Amy Shira Teitel of Vintage Space, and a video by Paul Shillito of Curious Droid.

There is a radiation issue in space, namely cosmic radiation, and it is a problem on long trips beyond Earth orbit; however, as Lara Kearney of NASA’s Orion Crew and Service Module’s Office explains in another NASA video, that they don’t have the answer to the cosmic radiation problem. This video contradicts the enthusiastic Smith video and raises the question:  Does NASA know what they are doing?

Orion:  The NASA Glacial-Paced Project

In May 1961, President John F. Kennedy asked Congress to fund a space program to take to the Moon and safely back. From the time of his speech in 1961 to the end of 1972, NASA launched the five of the six manned Mercury missions, designed, tested, built, and launched 10 Gemini manned missions, designed, tested, built, and launched 11 Apollo manned missions, landed men on the Moon, and overcame a disaster that delayed the manned launches for 21 months. Eleven years, three complete rocket programs, 27 manned missions, six successful Moon landings, no prior experience.

Orion, a slightly larger version of the Apollo capsule, only useful for short-term habitation in near-Earth orbit, is taking twelve years. Something is amiss.

NASA’s ‘Look Busy’ Project?

NASA definitely needs more funding, but something else is wrong. NASA’s Orion project doesn’t make any sense unless they are attempting to create the appearance that they are moving forward with a manned space program. The Orion project is, at best, an Earth to orbit elevator. It can’t meet any of the stated manned spaceflight goals of NASA. The question is, why isn’t NASA aware of these issues, and if they are aware, what is the agenda that is causing them to promote a project that is meaningless to the stated goals of deep space flight?

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