Description of the upper worlds. Skanda Purana, book 1

Narada said:

[In the distance] One hundred thousand yojanas from the earth, O Kaurava, the solar disk is located. The height of the chariot of the sun [is] nine thousand yojanas. /1/
[The length] of its shaft is described as twice as large (18,000 yojanas). Fifteen million seven hundred thousand yojanas is the length of its axis. There is one wheel on it. It has three segments, five spokes and six rims.
There is also a second axis, twenty-nine and a half thousand long [29,500 yojanas], O Pandava! /2- 4/
The short axis is fixed in the middle of the shaft. The short axle and the middle of the shafts are the support for the Dhruva [Polar Star] and the chariot.
To the left of the second axle and to the left of the wheel is the [mountain range] of Manas[otttara].
The seven horses [of this chariot] are metric sizes, hear their names from me./5-6/
Gayatri, Brihati, Ushnik, Jagati, Trishtup, Anushtup and Pankti are the metric sizes that are the horses of the Sun. /7/

There is no sunrise and sunset for the Sun, it is Omnipresent. The Sun is called risen or set when it is visible or not visible./8/
Staying in the city of Shakra and others, it comes into contact with three cities - [sunrise, noon and sunset]./9/
[Passing first] through uttaryana, the Sun passes through Capricorn, Aquarius, pisces, and then other zodiac signs./10/
After passing through these three zodiac signs, the Sun enters the equinox phase./11/

Having reached the sign of cancer, it [begins] the dakshinayana movement. As fast as the outer rim of the potter's wheel moves, so fast does the Sun move when passing through dakshinyana. During it, it moves very quickly, like a strong wind, [crushing everything in its path]. When it approaches the earth, it is the time when it moves slowly, [just as] the inner rim of a potter's wheel moves slowly. As far as the Sun is close to the earth or far away, the Sun is moving fast or slow at this time./13-16/

During sandhya, [demons] Mandehi wish to swallow the Sun. Such is the curse of Prajapati to these rakshasas, O Phalguna!/17/
As their immortal bodies die [daily], there is an endless terrible battle between them and the Sun day after day./18/
Since the twice-born sprinkle water purified by Gayatri on them, their sins are burned thanks to those who honor sandhya./19/
Those who do not worship sandhya are sinners and will go to [hell] Raurava.

Every month, rishis, gandharvas, rakshasas, apsaras, snakes, gramani (leaders) pass by the Sun with his seven horses. Dhata, Aryaman, Mitra, Varuna, Vivasvan, Indra, Pushan, Savitar, Amsha, Bhaga, Tvashtar, and Vishnu - these are the names of the months starting from Chaitra, the names of the twelve Adityas./20-22/

Above the region of the Sun is the disk of the Moon. He resides at a distance of one hundred thousand yojanas [from the sun].
His chariot has three wheels. Her ten horses, the color of jasmine, are harnessed to the right and left.
A full hundred thousand yojanas [above] the moon shines, illuminating everything around, the region of stars. Their number is fourteen arbuda, eight jaladhi and twelve crores.

Budha [Mercury] is located above the region of stars by two hundred thousand [yojanas]. The chariot of the son of the Moon [Mercury] consists of wind and fire. It is harnessed by eight red horses, fast as the wind.

Above Mercury, at a distance of two hundred thousand yojanas, [resides] Ushanas [Venus]. The chariot of Shukra [Venus] is drawn by eight horses, and consists of earth./23-28/

Above Bhauma [Mars] by two hundred thousand yojanas [dwells] the Priest of the gods [Brihaspati, Jupiter], his golden chariot is drawn by eight white horses./29/
Above Brihaspati by two hundred thousand yojanas is Shauri [Saturn], his chariot is drawn by eight shining horses and consists of akasha./30/
Eight horses are harnessed to the chariot of Svarbanu [Rahu], they are gray, like bees. They are harnessed to only one team, and follow below the Sun./31/

One hundred thousand yojanas above Saturn [is] the region of the seven rishis [the Big Dipper].
Above the seven rishis for one hundred thousand yojanas is Dhruva [the North Star]. Dhruva is the axis around which the jyoti chakra rotates. Dhruva is spread out in the lower part of the tail of the constellation Shishumara. which is called the form of Vasudeva, the Imperishable Atman. Everything that exists is tied to Dhruva by wind braces (vayu scambha), O Phalguna!/32-34/

The diameter of the solar disk is nine thousand yojanas. The diameter of the lunar disk is considered twice as large. Equal to both of them is the diameter of the orbit of Svarbhanu [Rahu] moving below. [When he] rises up, his pure round shadow falls on the ground./35-36/.
Bhargava [creates] the sixteenth part of the moon. A quarter smaller than Venus Brihaspati. Mars, Saturn and Mercury are a quarter smaller than Brihaspati. The size of the stars can be different: a hundred yojanas, or five yojanas, or three yojanas, or two yojanas, or one yojana, or half a yojana, but there is no less. Bhumi loka [aka] Bhur loka occupies one padu (walking distance)./37-39/

The space between the earth and the Sun is called Bhuvar loka.
The space between Dhruva and the Sun is fourteen niyuti [yojanas]. It is called Svar loka by those who contemplate the structure of the world.
The [space] above Dhruva at a distance of a crore [yojana] is called Mahar loka.
At a distance of twenty million yojanas, [is] Jnana loka, [where] chatuhsans live.
That which is above this at a distance of four crores is considered a Tapa loka inhabited by vairaja devas free from burning [at the end of the kalpa].
At a distance six times greater than Tapa loka, Satya loka shines/40-43/

The place where the undying [apunarmaraka] dwell is called Brahma loka. Eighteen crores up extends this good, incomparable shining abode.
The three created worlds are called Bhur, Bhuvar and Swar.
Jana, Tapa and Satya - these three are called uncreated.
In the middle between the created and uncreated [worlds] resides Mahar loka. At the end of the kalpa, it turns into emptiness, but it is not completely destroyed.
These seven named worlds are achievable thanks to good merits./44-47/

It is known that these worlds are attainable thanks to japa, homa, pilgrimage and vows described in the Vedas and other [scriptures]./48/
From the top of the world egg to the earth, to the top of Meru and from it to all the worlds, the good, incomparable Ganga flows down. It flows all over the earth and goes to the lower world.
At the top of the world egg is the guardian goddess of the gates, surrounded by millions of goddesses, along with Pingala (Shiva). They, the good ones, protect the world egg. Endowed with great power, they destroy sinners.