By Deborah Byrd in
FAQs | Space on May 20, 2014
Which spiral arm of the Milky Way contains our sun?
Artist’s concept of Milky Way’s intricate spiral structure
Artist’s concept of Milky Way’s intricate spiral structure
Many know our Milky Way is a spiral galaxy. But where within this vast spiral structure do our sun and Earth reside?
We live in an island of stars called the Milky Way, and many know that our Milky Way is a spiral galaxy. In fact, it’s a barred spiral galaxy, which means that our galaxy probably has just two major spiral arms, plus a central bar that astronomers are only now beginning to understand. But where within this vast spiral structure do our sun and its planets reside? Our galaxy is about 100,000 light-years wide. We’re about 25,000 light-years from the center of the galaxy. It turns out we’re not located in one of the Milky Way’s two primary spiral arms. Instead, we’re located in a minor arm of the galaxy. Our local spiral arm is sometimes Orion Arm, or sometimes the Orion Spur. It’s between the Sagittarius and Perseus Arms of the Milky Way. The image below shows it.
Our sun is located the Orion Arm, or Orion Spur, of the Milky Way galaxy. It’s a minor spiral arm, located between two other arms. Image updated in 2010 by R. Hurt on Wikimedia Commons.
Our local Orion Arm of the Milky Way is some 3,500 light years across. It’s approximately 10,000 light years in length. Our sun, the Earth, and all the other planets in our solar system reside within this Orion Arm. We’re located close to the inner rim of this spiral arm, about halfway along its length.
The Orion Arm, or Orion Spur, has other names as well. It’s sometimes simply called the Local Arm, or the Orion-Cygnus Arm, or the Local Spur. The Orion Arm is named for the constellation Orion the Hunter, which is one of the most prominent constellations of Northern Hemisphere winter (Southern Hemisphere summer). Some of the brightest stars and most famous celestial objects of this constellation (Betelgeuse, Rigel, the stars of Orion’s Belt, the Orion Nebula) are neighbors of sorts to our sun, located within the Orion Arm. That’s why we see so many bright objects within the constellation Orion – because when we look at it, we’re looking into our own local spiral arm.
Go here to see illustrations of Orion’s stars within the Orion Arm
Artist’s concept of what astronomers now believe is the overall structure of the spiral arms in our Milky Way galaxy. Image via NASA and Wikimedia Commons.
Botton line: The sun resides within a minor spiral arm of the galaxy, called the Orion Arm. This post explains more and has artist’s illustrations.
This is not the Milky Way. We can’t, of course, get outside the Milky Way to take its picture. This is another barred spiral galaxy, known as NGC 1300. See how it has just two major spiral arms? The Milky Way’s structure is apparently more complex, but, like this galaxy, it is thought to have just two major spiral arms. Photo via Hubble Space Telescope.
बॉलीवूड मूवी ट्रेलर प्रोडुसर दिग्दर्शक गौरी खान शाहरुख खान इंद्र अबे पाखब्डी पाश्चात्य संस्कृती के बूट चाटणे वाला बेशरम बेहाया बद्बुवाला बुद्दू further content was censored, as it was judged to be anti-Hindutva by the powers that B, Oops, MoMoJi damboji’s [B] rigade, ‘B’ for Buddu not for BJP. हरे राम! …and I am Sid Harth
Indra, the King of Devas (gods), while riding on an elephant, came across Sage Durvasa who offered him a special garland given to him by the god Shiva. Indra accepted the garland, placing it on the trunk of the elephant as a test to prove that he was not an egoistic god. The elephant, knowing that Indra had no control over his own ego, threw the garland to the ground. This enraged the sage as the garland was a dwelling of Sri (fortune) and was to be treated as prasada. Durvasa cursed Indra and all devas to be bereft of all strength, energy, and fortune. In battles that followed this incident, the Devas were defeated and Asuras (demons) led by king Bali gained control of the universe. Devas sought help from the god Vishnu Who advised them to treat asuras in a diplomatic manner. Devas formed an alliance with asuras to jointly churn the ocean for the nectar of immortality and to share it among them. However, Vishnu told Devas that He would arrange that they alone obtain the nectar. The churning of the Ocean of Milk was an elaborate process. Mount Mandara was used as the churning rod, and Vasuki, the king of serpents, who abides on Shiva’s neck, became the churning rope. The demons demanded to hold the head of the snake, while the gods taking advice from Vishnu, agreed to hold its tail. As a result the demons were poisoned by fumes emitted by Vasuki. Despite this, the gods and demons pulled back and forth on the snake’s body alternately, causing the mountain to rotate, which in turn churned the ocean. However, once the mountain was placed on the ocean, it began to sink. Vishnu, in the form of a turtle Kurma, came to their rescue and supported the mountain on his back. The Samudra Manthan process released a number of things from the Milk Ocean. One product was the lethal poison known as Halahal. (In some versions of the story, this poison escaped from the mouth of the serpent king as the demons and gods churned.) This terrified the gods and demons because the poison was so powerful that it can destroy all of creation. Then the gods approached Shiva for protection. Shiva consumed the poison in an act to protect the universe, and his wife Parvati pressed her hand on Shiva’s throat to save the universe. As a result, The color of Shiva’s neck turned blue. For this reason, Lord Shiva is also called Neelakanta (the blue-throated one; “neela” = “blue”, “kantha” = “throat” in Sanskrit).
भृगु संहिता संशोधन प्रश्नकर्ता श्री श्री श्री सिद्धार्थ्जी: ‘नमो महर्षी गुरुजी अपने दुध सागर में सुरज भगवानजी कहा विराजमान हैं?’ सिद्धांतकर्ता सुख कर्ता दुख हरता वार्ता विघ्नाची, उफ़्फ़, गलत आरती. महर्षी गुरुजी भृगुजी: ‘अरे तू क्या बकबक कर्ता कौनसा दुध सागर दही साखर? देवानां देवजी इंद्रजी जब अपने हाथी पर सवार आकाश में उड रहे Around the World in Eighty Days बॉलीवूड मूवी ट्रेलर प्रोडुसर दिग्दर्शक गौरी खान शाहरुख खान इंद्र
I just love science and Faux-Science, considered in India, as a gift 2 ST U Pi D Hindus. Considering the days when Indians acquired whatever was trending at that time on facebook, twitter, or Google it was not bad for the beginners. There is some, if not, clever thinking, but dumb interpretation of such ethereal concepts as solar system-of ours and several observable dots, make it, dim dots, as against, shiny dots-your stars in our galaxy, Milky Way. The Bhrigu Saṃhitā is an astrological (Jyotish) classic attributed to Maharishi Bhrigu during the Vedic period, Treta yuga. It is said that it was compiled by the Sage out of compassion for humanity so that humanity could cope with the pressures of its existence and move towards a more spiritual nature. The Bhrigu Samhita is said to contain predictions on the current and future lives as well as information on the past life. These predictions will be accurate based on the actions (karma) of the questioner. Maharishi Bhrigu was the first compiler of predictive astrology. He compiled about 500,000 horoscopes and recorded the life details and events of various persons. This formed a database for further research and study. This study culminated in the birth of the science (Śāstra) of determining the quality of time (Horā) and is the Bṛhat Parāśara Horā Śāstra. These Horoscopes were based upon the planetary positions of the Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn, Rāhu (North Node of the Moon) and Ketu (South Node of the Moon). After that, Maharishi Bhṛigu gave his predictions on different types of horoscopes compiled by him with the help of Lord Gaṇeśa in a brief and concise manner. The total permutations/possible horoscope charts that can be drawn with this is about 45 million. Maharishi taught this art of predictions to his son (Śukra) and other pupils. Lost manuscript  Currently the original Bhṛigu saṃhitā as a book is not available. During foreign invasions of India by Muslims from the northwest in the 12th and 13th centuries, the brahmin community became dispersed all over India. The invaders captured these prime assets of the brahmins. Some parts of the ‘Bhṛgu Saṃhitā’ were taken away by them. The most unfortunate and destructive event was the destruction of the Nalanda university library by then Muslim rulers, where several thousands of the horoscopes compiled by Maharṣi Bhṛgu had been stored. Only a small percentage of the original horoscopes of Bhṛgu Saṃhitā remained with the Brahmin community which are now scattered throughout various parts of India. Many of the pages scattered in North of India were with Pt. Deshraj Sharma from Hoshiarpur, Punjab (North India) who also had this as an undertaking from government of India. The city of Hoshiarpur was famous for Bhrigu Shastris.
…and I am Sid Harth