Hubble Catches New Stars, Individually, Forming In Galaxies Beyond The Milky Way

What a nice vantage point :)

The Milky Way seen from a sea cave in Malibu, California

source

Interesting facts about stars

Stars are giant, luminous spheres of plasma. There are billions of them — including our own sun — in the Milky Way Galaxy. And there are billions of galaxies in the universe. So far, we have learned that hundreds also have planets orbiting them.

1. Stars are made of the same stuff

All stars begin from clouds of cold molecular hydrogen that gravitationally collapse. As they cloud collapses, it fragments into many pieces that will go on to form individual stars. The material collects into a ball that continues to collapse under its own gravity until it can ignite nuclear fusion at its core. This initial gas was formed during the Big Bang, and is always about 74% hydrogen and 25% helium. Over time, stars convert some of their hydrogen into helium. That’s why our Sun’s ratio is more like 70% hydrogen and 29% helium. But all stars start out with ¾ hydrogen and ¼ helium, with other trace elements.

2. Most stars are red dwarfs

If you could collect all the stars together and put them in piles, the biggest pile, by far, would be the red dwarfs. These are stars with less than 50% the mass of the Sun. Red dwarfs can even be as small as 7.5% the mass of the Sun. Below that point, the star doesn’t have the gravitational pressure to raise the temperature inside its core to begin nuclear fusion. Those are called brown dwarfs, or failed stars. Red dwarfs burn with less than 1/10,000th the energy of the Sun, and can sip away at their fuel for 10 trillion years before running out of hydrogen.

3. Mass = temperature = color

The color of stars can range from red to white to blue. Red is the coolest color; that’s a star with less than 3,500 Kelvin. Stars like our Sun are yellowish white and average around 6,000 Kelvin. The hottest stars are blue, which corresponds to surface temperatures above 12,000 Kelvin. So the temperature and color of a star are connected. Mass defines the temperature of a star. The more mass you have, the larger the star’s core is going to be, and the more nuclear fusion can be done at its core. This means that more energy reaches the surface of the star and increases its temperature. There’s a tricky exception to this: red giants. A typical red giant star can have the mass of our Sun, and would have been a white star all of its life. But as it nears the end of its life it increases in luminosity by a factor of 1000, and so it seems abnormally bright. But a blue giant star is just big, massive and hot.

4. Most stars come in multiples

It might look like all the stars are out there, all by themselves, but many come in pairs. These are binary stars, where two stars orbit a common center of gravity. And there are other systems out there with 3, 4 and even more stars. Just think of the beautiful sunrises you’d experience waking up on a world with 4 stars around it.

5. The biggest stars would engulf Saturn

Speaking of red giants, or in this case, red supergiants, there are some monster stars out there that really make our Sun look small. A familiar red supergiant is the star Betelgeuse in the constellation Orion. It has about 20 times the mass of the Sun, but it’s 1,000 times larger. But that’s nothing. The largest known star is the monster UY Scuti.  It is a current and leading candidate for being the largest known star by radius and is also one of the most luminous of its kind. It has an estimated radius of 1,708 solar radii (1.188×109 kilometres; 7.94 astronomical units); thus a volume nearly 5 billion times that of the Sun.

6. There are many, many stars

Quick, how many stars are there in the Milky Way. You might be surprised to know that there are 200-400 billion stars in our galaxy. Each one is a separate island in space, perhaps with planets, and some may even have life.

7. The Sun is the closest star

Okay, this one you should know, but it’s pretty amazing to think that our own Sun, located a mere 150 million km away is average example of all the stars in the Universe. Our own Sun is classified as a G2 yellow dwarf star in the main sequence phase of its life. The Sun has been happily converting hydrogen into helium at its core for 4.5 billion years, and will likely continue doing so for another 7+ billion years. When the Sun runs out of fuel, it will become a red giant, bloating up many times its current size. As it expands, the Sun will consume Mercury, Venus and probably even Earth. 

8. The biggest stars die early

Small stars like red dwarfs can live for trillions of years. But hypergiant stars, die early, because they burn their fuel quickly and become supernovae. On average, they live only a few tens of millions of years or less.

9. Failed stars

Brown dwarfs are substellar objects that occupy the mass range between the heaviest gas giant planets and the lightest stars, of approximately 13 to 75–80 Jupiter masses (MJ). Below this range are the sub-brown dwarfs, and above it are the lightest red dwarfs (M9 V). Unlike the stars in the main-sequence, brown dwarfs are not massive enough to sustain nuclear fusion of ordinary hydrogen (1H) to helium in their cores.

10. Sirius: The Brightest Star in the Night Sky

Sirius is a star system and the brightest star in the Earth’s night sky. With a visual apparent magnitude of −1.46, it is almost twice as bright as Canopus, the next brightest star. The system has the Bayer designation Alpha Canis Majoris (α CMa). What the naked eye perceives as a single star is a binary star system, consisting of a white main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, called Sirius B. 

To know more click the links: white dwarf, supernova, +stars, pulsars

sources: wikipedia and universetoday.com

image credits: NASA/JPL, Morgan Keenan, ESO, Philip Park / CC BY-SA 3.0

A nice little summary of stars that passed nearby, or that may yet pass by, and their affects on our solar system...

http://futurismnews.tumblr.com/

A Cosmic Legacy: From Earth to the Stars (Extended Video)

"Our beautiful mother world ached for a reprieve from the injustices of many, courtesy of cultures and governance systems, that forgot how to love, how to be kind, how to include others, and how to think beyond the scope of greed and power, but within the visions of shared joy and well-being."

“For far too long people have lived for merely one shared goal, due to the daunting nature that life seems to bring. That goal may be a noble one, but it comes short of progression in and of itself and does not recognize the complexity of life and all of its nuances.

“This goal is survival through natural evolution. To merely survive, no matter the means, as noble as it may seem at first, will actually lead to the end of life and the end of humanity, whether through natural events or mankind’s apparent affinity toward death.

“It’s as if far too many people worship the almighty ‘mixed result’ rather than raise the quality of and joy in life through logic, study, innovation, and common sense, by enjoying what it can bring to the table, which will ultimately result in desired results.

“Finding cures for disease, both physiological and neurological, and possessing the ingenuity to innovate technologies as well as a pathway for humanity to quicken their pace for developing them will lead to preserving our Earth, our solar system, perhaps our Universe, and with it, each individual and humanity itself, as we travel to and push the limits of the Universe and its sustainability, trusting ourselves as we do so.”

Enjoy this First-Year-Anniversary compilation of all of my works in one title: A Cosmic Legacy: From Earth to the Stars

This title includes the entire Pathway to the Stars series: Part 1, Vesha Celeste Part 2, Eliza Williams Part 3, James Cooper Part 4, Universal Party Part 5, Amber Blythe Part 6, Erin Carter Part 7, Span of Influence Part 8, Dreamy & Deep Part 9-Allure & Spacecraft Part 10-Sky Taylor Part 11-A New Day Part 12-Alpha Andromedae

Eliza Williams and a host of friendly heroes tackle some of the most significant dilemmas of the day to bring humanity out and into the stars bearing a legacy we would be proud to share with other civilizations--a legacy of kindness, of mind-to-mind communication, of love, and of healing instead of harming. If we are to overcome the great expansion and the death of all life, we must overcome the smaller challenges to progress and focus on even greater ones. Working with her team diligently, Eliza will speed the pace of society in her world with the belief that beauty and untold potential are within every being. If we find ways to bring that out in ourselves and others, a future where we can breed longevity, a collective and high quality of life, augment the clarity of our minds, and innovate to span the Cosmos may be in our grasp.

Together with the organization Eliza Williams founded, called Pathway, she and her growing team will take us on a fantastical and Utopian journey to get us out and into the farthest reaches of space. There are dilemmas such as the physiological effects of space on each of us, as well as the need for longevity and a desire to still be able to visit loved ones following long journeys. Eliza and her team develop capabilities, so we can overcome the challenges ahead and are determined to stabilize a rocky economy, wipe away suffering, violence, disease, cartels, terrorism, and trafficking in persons. They work together to tame seismic activity, weather, and fires. She and her friends tackle ways to prevent extinction and provide solutions to quality of life concerns. They even consider the longevity of our Sun and our Earth's capacity to preserve life. Eliza tackles each of these issues to get us out, and into the stars, so we can begin our biggest quest--to help our Universe breathe ever so lightly.

No matter the challenge, there will always be greater pursuits! The saga will continue...

"A Cosmic Legacy" is a science fiction & fantasy novel, with a Space Opera flair to it. It is designed to edify, educate, and entertain young adults and scholars alike. Some of the specific topics covered include physiology, neurology, physics, biotechnology, nanotechnology, astronomy, politics, philosophy, and ethics. Preservation of the life-giving and sustaining capacities of our Earth and creation of environments conducive to life throughout the Solar System once thought to be impossible are primary goals. The ideas of kindness, with innovation rooted in well-being, longevity, where cellular health expresses youth and rejuvenation, optimizing the body to be able to live comfortably in austere space environments without adverse effects, and mind-to-mind communication bearing with it a legacy we'd be proud to share with distant civilizations with mutual goals of preserving our Universe can bring a beautiful future for all living beings.

Hardcover (Regular price $45) LCCN: 2019911854 | ISBN: 978-1-7333131-2-4 https://smile.amazon.com/dp/1733313125

Paperback (Regular price $35) LCCN: 2019909638 | ISBN: 978-1-7333131-1-7 https://smile.amazon.com/dp/1733313117

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“Why is there a blue bridge of stars across the center of this galaxy cluster? First and foremost the cluster, designated SDSS J1531+3414, contains many large yellow elliptical galaxies. The cluster’s center, as pictured above by the Hubble Space Telescope, is surrounded by many unusual, thin, and curving blue filaments that are actually galaxies far in the distance whose images have become magnified and elongated by the gravitational lens effect of the massive cluster. More unusual, however, is a squiggly blue filament near the two large elliptical galaxies at the cluster center. Close inspection of the filament indicates that it is most likely a bridge created by tidal effects between the two merging central elliptical galaxies rather than a background galaxy with an image distorted by gravitational lensing. The knots in the bridge are condensation regions that glow blue from the light of massive young stars. The central cluster region will likely undergo continued study as its uniqueness makes it an interesting laboratory of star formation.”

via APOD/NASA;  Image Credit: NASA, ESA, G. Tremblay (ESO) et al.; Acknowledgment: Hubble Heritage Team (STScI/AURA) - ESA/Hubble Collaboration

Pathway to the Stars: Part 8, Dreamy & Deep is out! (eBook & Paperback!) "This is it. This is humanity stepping it up and demonstrating to the universe that we were ready to preserve life, reanimate it, and protect the Universe itself from the laws of uncontrolled chaos-rather than destroy life or watch the universe expand beyond repair." Vesha has been through a lot of training in the Virtual Universe, but soon her time will come to return to the real world. Leading to this, her dear friend, Najem Grace, has long weighed in the prospects of physiological optimization yet has stayed the hands of technology. Perhaps Vesha's outcome will help her decide; perhaps it won't. Is this the new evolution? Or are we tempting fate? Joanne Gallant, a musician with all the awards and the talent that goes with it, experiences life with deep questions. Her wonder is if there is more than this, more she can do, beyond the applause and recognition. Where is Eliza Williams, the founder of Pathway in all of this? How will she help both Najem and Joanne? Find out in this story! Dreamy & Deep, ISBN: 978-1951321086, LCCN: 2019918460 eBook: https://smile.amazon.com/dp/B081XK1XN2 Paperback: https://smile.amazon.com/dp/1951321081 More info: https://www.mjopublications.com https://smile.amazon.com/author/matthewopdyke

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Have an awesome New Year! -Matthew Opdyke #scifiauthor #2019 #politicalsciencefiction #neuroscience #physics #theoreticalphysics #biotechnology #nanotechnology #longevity #CRISPR #physiology @matthewopdyke https://www.instagram.com/p/Br-QY-agvi-/?utm_source=ig_tumblr_share&igshid=1kquqo93uhplj

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For all interested (in the US), October 11th, 2019 is the last full day with an opportunity to win the free hardcover book: A Cosmic Legacy: From Earth to the Stars  Contemporary Science Fiction Author Matthew J. Opdyke is giving away two of his one-year-anniversary novels. This includes all his previously published content in the continuing saga, via his compilation (a $45 value). Race to win, or simply buy it, and make this grand literary opus the favorite item in your library, next to your reading corner, on your nightstand, or in your living room, as you settle and read while the days go by. Enjoy the story of several heroes who do as much as they can to heal the Earth, provide healing to those suffering most, and help humanity get out and into the Cosmos! LCCN: 2019911854 ISBN: 978-1-7333131-2-4

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LCCN: 2019911854 ISBN: 978-1-7333131-2-4

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