It is a fact that our seers worshipped the Sun God, it is a fact that Hinduism is basically a Sun-God worshipping religion and we will continue to do so to achieve self righteousness.
I am not sure you noticed my name is 'Surya Deva' which means that I respect that the sun is a very important symbol in the Vedic tradition and I also accept its symbolic importance of referring to the inner-self, but which is a very peculiar interpretation only specific to the Vedanta school, and there is no clear proof to show the early Vedic people believed the same.
However to say the Sun-God is the one and true only god of the Vedic people is clearly false and easily disproven. The Vedic people not only worshiped the Sun-God they worshiped the rain god, thunder god, fire god, wind god, sea god, dawn god, storm god.
Here are some verses addresses to various Vedic gods from the Rig Veda:
Indra
1.51.15 To him the Mighty One, the self-resplendent, verily strong and great, this praise is uttered.
May we and all the heroes, with the princes, be, in this fray, O Indra, in thy keeping.
Agni
6.1.8-11
Sage of mankind, all peoples' Lord and Master, the Bull of men, the sender down of blessings,
Still pressing on, promoting, purifying, Agni the Holy One, the Lord of riches.
Agni, the mortal who hath toiled and worshipped, brought thee oblations with his kindled fuel,
And well knows sacrifice with adoration, gains every joy with thee to guard and help him.
Mightily let us worship thee the Mighty, with reverence, Agni! fuel and oblations,
With songs, O Son of Strength, with hymns, with altar: so may we strive for thine auspicious favour.
Thou who hast covered heaven and earth with splendour and with thy glories, glorious and triumphant.
Varuna
2.28.1-4
THIS laud of the self-radiant wise Āditya shall be supreme oer all that is in greatness.
beg renown of Varuṇa the Mighty, the God exceeding kind to him who worships.
Having extolled thee. Varuṇa, with thoughtful care may we have high fortune in thy service,
Singing thy praises like the fires at coming, day after day, of mornings rich in cattle.
May we be in thy keeping, O thou Leader wide-ruling Varuṇa, Lord of many heroes.
O sons of Aditi, for ever faithful, pardon us, Gods, admit us to your friendship.
He made them flow, the Āditya, the Sustainer: the rivers run by Varuṇa's commandment.
These feel no weariness, nor cease from flowing: swift have they flown like birds in air around us
Pritvhi:
5.84.1-3
THOU, of a truth,O Prthivi, bearest the tool that rends the hills:
Thou rich in torrents, who with might quickenest earth, O Mighty One.
To thee, O wanderer at will, ring out the lauds with beams of day,
Who drivest, like a neighing steed, the swelling cloud, O bright of hue.
Who graspest with thy might on earth. een the strong sovrans of the wood,
When from the lightning of thy cloud the rain-floods of the heaven descend.
Rudra
1 WHAT shall we sing to Rudra, strong, most bounteous, excellently wise,
That shall be dearest to his heart?
2 That Aditi may grant the grace of Rudra to our folk, our kine,
Our cattle and our progeny;
3 That Mitra and that Varuṇa, that Rudra may remember us,
Yea, all the Gods with one accord.
4 To Rudra Lord of sacrifice, of hymns and balmy medicines,
We pray for joy and health and strength.
5 He shines in splendour like the Sun, refulgent as bright gold is he,
The good, the best among the Gods.
The above shows the Vedic people did not just worship the Sun god, they worshiped many natural gods, and they used very similar appellations "mighty one" "supreme" "god of all gods" They also seemed to be very liberal, worshiping many different gods at once
You want scientific evidence?
Then see -
Quantum physics says goodbye to reality - physicsworld.com
Many of the quantum researchers who have won Noble prizes have already renounced realism, the reality given by science is constructed, neither quarks, protons, electrons, brain exists out there in the external physical world, its all a creation of the mind.
Alain Aspect and Anton Zeilinger on Unreality
Neither of your links from these physicists say the Sun-God is the one and true god lol
Srimad Bhagvatham dates back to around 3000 BC according to the verses from the Bhagvatham itself.
The Srimad Bhagvatham based on independent secular scholarship is dated between 600AD and 900AD. Moreover, the Srimad Bhagvatham is not addressed to the Sun-God, but Vishnu and Vishnu's incarnations, primarily Krishna. Krishna is the supreme god of the SB not the sun god.