Sun or Suryanarayana

Sun is the emperor of remaining ashtagrahas( eight planets).He is known as Suryanarayana, meaning visible form of lord Vishnu.He is the creator,sustainer and destroyer of life on earth.Therefore he is the embodiment of thrimurthis- Brahma ,Vishnu maheshwara — in this visible world.Aditya( another name of sun which means son of aditi) is the source of light for the 5 nakshatra graha( star like planets- mercury,Mars,Jupiter,Saturn and Venus) and Chandra( moon).Thus he is the primary luminary.Owing to all these qualities,sun is the best planet to represent soul.Therefore is the only planet, which is considered as a papa graha(natural malefic) as well as Satvika(most good natured).

According to jaimini system sun is the permanent Atmakaraka.Soul is a part of paramatma,like a drop from an ocean.The drop must have all the qualities of water from ocean ,like wise sun represents soul by its property of light.

Simha(Leo) is the own house of sun.Simha rashi represents a lion which is the best sign to present sun the emperor.He is usually depicted as riding a chariot ridden by 7 horses representing 7 components of white light.It is controlled by Aruna(son of vinatha, mother of garuda- thus Aruna is a brother of garuda-)

Sun gets exalted in the sign of Mesha(Aries) — more specifically in 10th degree of Mesha.Sun covers entire elliptical in 365 days.Thus covers 1° in one day. He is exalted in 10th day of the month of Mesha(falling on 24/25 of April every year).This day is very important regarding the commencement of agriculture in almost whole of south asia(India,Nepal, Bhutan,and shri lanka) along with some parts of Tibet, Myanmar,southwest china,northern Thailand and Laos.

Sun gets debilitated in the sign of Thula( Libra) ,more exactly 10 th degree of Libra.

The duration of sun in a sign is 30/31 days and it represents a month.In Indian solar calendar,each month is named according to the sign in which sun is posited.The month of

Mesha is from : 14/15 of April to 14/15 of may

Vrishabha: mid May to june

Mithuna: mid June to july

Karkataka: mid July to august

Simha:mid August to september

Kanya:mid September to october

Thula: mid October to mid November

Vrishchika:mid November to mid December

Dhanu: mid December to january

Makara: mid January to february

Kumbha:mid February to mid march

Meena: mid March to mid April.

Thus completing a full year.

In a chart sun represents ones own soul, his father, his image in the world, pride and so on.Sun is with his maximum power in terms of Dig Bala(directional strength) when he is posited in 10 th house of chart.It represents mid noon in real world.

From second half of 1st house to 1st half of 7 th house in a horoscope indicates inner (invisible)qualities of native,that are known to native or his close relatives and friends.The other half, from 2nd half of 7th house to 1st half of 1 St house indicates outer qualities (or known or visible qualities) of the native.When sun gets posited in 10 th house,it is present at the centre of visible houses,thus iluminating all aspects in tis area.Such a native will be well known in his circle.He is likely to serve the government.But if the rashi becomes too bad or too good, it may cause arrogance in the native.Sun is devoid of digbala in 4 th house,that is midnight.In this position,it is found that mother of such native will do the work of his father and father will do the work of mother.Such a native will be working in government,since sun aspects the 10 th house, but in a unknown manner towards public,but his role will be very important.

Sun has a property that is not found in any other planet.That is ,whenever any other planet (except rahu and ketu)comes too near to him, their power will get diminished in the light of sun.This is called as astha planet( combust)This repeatedly occurs with mercury and Venus.

Sun has friendly relationship with Jupiter,moon ,mars and mercury is considered as equivalent.Venus and Saturn are enemical to sun.Rahu and ketu are worst enemies of sun.Saturn ,even though son of Surya(sun) considers sun as enemy ,because of some incidents that occured to his mother, Cchaya Devi.Sun has another son- Yama, and a daughter- Yamuna.The earthly embodiment of Yamuna is the river Yamuna.She is most auspicious near vrindavana and it is considered to be very good to take a dip in Yamuna, as a solution to pacify sun in chart.

How Big is the Sun Compared to Earth?

 

Have you ever looked up at the Sun and wondered just how big it really is compared to our planet? We know it’s massive — it lights up our days, fuels life on Earth, and governs the motion of planets. But when you dive into the actual numbers, the scale becomes almost unbelievable.

Let’s Start with Diameter

Earth’s diameter: ~12,742 km

Sun’s diameter: ~1,391,000 km

That means the Sun is about 109 times wider than Earth.

Now imagine placing 109 Earths side by side… and you’d just match the width of the Sun.

Now Think in Volume

Here’s where it gets even crazier:

You can fit approximately 1.3 million Earths inside the Sun if it were hollow and you could pack the Earths in like marbles.

Let that sink in — 1,300,000 Earths!

A Visual Comparison

If we scaled it down to everyday objects:

If the Sun were a basketball, the Earth would be the size of a sesame seed.

That’s how small we are in comparison.

Why is the Sun So Huge?

The Sun is a G-type main-sequence star, mostly made up of hydrogen and helium. Its enormous size allows it to generate immense pressure and temperature in its core, where nuclear fusion takes place — the process that powers the Sun and emits the energy we see as sunlight.

A Gravitational Giant

Due to its size and mass, the Sun contains about 99.86% of the total mass of our entire solar system. That’s why all the planets — including Earth — orbit around it.

Final Thought

Understanding the size of the Sun isn’t just about numbers — it gives us perspective. We live on a small planet, orbiting a massive star, in just one corner of a vast galaxy. And yet, here we are, thinking, learning, and exploring it all.

How big can a star form?

 

The stars at the bottom are the biggest currently known stars. 1 AU is the distance between the Sun and the Earth.

The biggest stars that could ever have formed are thought to have existed billions of years ago, just after the Big Bang. They were enormous, even more than 1000 times as massive as our Sun. In comparison, the biggest star known from our time is BAT99‑98, which is only 226 times as massive as our Sun.

These hypothetical stars were called quasi-stars or black hole stars because they had a black hole in the middle of them.

Because of their size, they are thought only to have existed for about 7 million years. They were so huge that they might have been progenitors of the supermassive black holes at the center of modern galaxies. They weren’t powered by nuclear fusion like regular stars; instead, their brightness came from the material falling into the black hole in their core. Because they were so massive when the black hole formed inside them, they didn’t explode like a supernova. Surrounding layers of the star absorbed the explosion and the newly formed black hole started consuming the star from within.

In our time, such huge stars cannot form anymore—there is too much contamination from elements heavier than hydrogen and helium. There were no such heavy elements in the first generation of stars just after the Big Bang. They appeared when the first stars formed, produced them via nuclear fusion, and spread them in supernovas.

These monsters had temperatures of about 10,000 K, and they might have been more than 7000 times as big as our Sun or 66 times as wide as the distance between the Sun and the Earth. During their short lives, they are thought to have cooled to temperatures of about 4,000 K, which caused them to dissipate and die, leaving behind just the black hole.

How long would it take to travel to the Sun with current space technology?

Currently, with the chemical propulsion technology we have, we can talk about propulsion speeds in the order of 3.8–4.5 km/s or 13,680–16,200 km/h.

And here there are three answers. Even because the distance from the Earth to the Sun is not always the same.

• Minimum distance = 147 million kilometers
• Average distance = 149 million kilometers
• Maximum distance = 152 million kilometers

In this case I will use 16,200 km/h.

$s=dt\to t=ds$

$tmin=147,000,000km16,200km/h$

$tmin\approx 1,03years$

$tmandd\approx 1,05years$

$tmthex\approx 1,07years$

Therefore, taking into account an acceleration of 1g so as not to put too much pressure on the crew, and our current propulsion capacity, the journey from Earth to the Sun would always take just over a year.

Yes. We could theoretically reach speeds of 200,000 mph if we used an ion thruster, once the spacecraft was well out of Earth's orbit. But that would require the thruster to have a nuclear reactor.

And the time needed to reach this speed of 320,000 km/h would depend on the mass of the ship and the capacity of the reactor.

Although it is not a recommended trip since we would have to make the spaceship have a lot of mass, because of the radiation protection material that we would have to use.

Because without this material the crew would be making a one-way trip.

The ideal would be something with some similarities to Project Orion, which would allow the creation of a nuclear thruster that would allow the spacecraft to reach at least 1% of the speed of light.

Because at 1% of the speed of light then the travel times would be very different:

$tmin\approx 5days$

$tmandd\approx 6days$

$tmthex\approx 6days$

And these would be the days when it would not be good to try to reach 1% of the speed of light in seconds. In fact, it would be fatal for the crew.

If you tried to accelerate a spaceship from, say, an initial velocity of zero to, say, 2,997,924 m/s in 20 seconds, you would be exposing the crew to a G-force of approximately 15,264g. More than enough to kill the entire crew, and destroy the ship.

How much longer will the sun last until it explodes?

 The Sun will not explode in the way a massive star does in a supernova, but it will eventually run out of fuel and go through dramatic changes before becoming a white dwarf. Here’s a detailed breakdown of the Sun’s life cycle and how much time it has left:

1. Current Age of the Sun

• The Sun is about 4.6 billion years old.
• It is currently in the main sequence phase, where it fuses hydrogen into helium in its core.
• This phase is stable and will continue for about 5 billion more years.

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2. Future Evolution of the Sun

Once the Sun depletes its hydrogen fuel in the core, it will go through several stages:

A. Subgiant Phase (5 billion years from now)

• The Sun’s core will shrink as hydrogen runs out.
• The outer layers will start expanding, and the Sun will become brighter and larger.

B. Red Giant Phase (5.4 billion years from now)

• The core will contract further, heating up to the point where helium fusion begins (helium to carbon and oxygen).
• The outer layers will expand up to 100 times its current size, potentially engulfing Mercury, Venus, and even Earth.
• The Sun will be much brighter (about 2,000 times its current luminosity).

C. Helium Burning and Instability (5.7–6.5 billion years from now)

• Helium fusion will continue for a few hundred million years.
• Eventually, the Sun will experience thermal pulsations, causing it to shed its outer layers.
• These ejected layers will form a planetary nebula, a glowing shell of gas around the remaining core.

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3. White Dwarf Formation (6.5+ billion years from now)

• After shedding its outer layers, the Sun’s core will remain as a white dwarf—an extremely dense, Earth-sized remnant.
• This white dwarf will slowly cool over trillions of years, eventually fading into a black dwarf (a theoretical cold remnant of a white dwarf).

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Will the Sun Ever Explode?

No, the Sun is not massive enough to go supernova. Supernovae only happen in stars at least 8 times the mass of the Sun. Instead, the Sun will end its life by shedding its outer layers and forming a white dwarf.

Final Thoughts

The Sun will continue shining for about 5 billion more years in its current form. Then, it will expand, shed its outer layers, and become a white dwarf—not an explosion, but still a spectacular transformation!

What is White Dwarf ?

A white dwarf is the stellar core left behind after a dying star has exhausted its nuclear fuel and expelled its outer layers to form a planetary nebula.

Black Dwarf-A black dwarf is a theoretical stellar remnant, specifically a white dwarf that has cooled sufficiently to no longer emit significant heat or light.

No black dwarfs are expected to exist in the universe at the present time.

Because the time required for a white dwarf to reach this state is calculated to be longer than the current age of the universe (13.8 billion years).

The estimated time for the Sun to cool enough to become a black dwarf is at least 1015 (1 quadrillion) years.

So yeah in the end the Sun will look like this .