It is clearly said in Vedas and Puranas which are existing trillions of years ago. The word भू is used to denote Earth. It is famously called भूगोल (Bhoogola) meaning “The sphere that is Earth”.

Another prominent verse:-
मध्ये समस्ताण्डस्य भूगोलो व्योम्नि तिष्ठति – In the midst of the Universe, the spherical Earth stays.

It is also explained in the Srimad Bhagavatham and the Vishnu Puranam in the Varaha Avatar chapters of Earth being a sphere

Vedic literature portrays an ancient solar religion of Yoga and enlightenment, such as was once common throughout the entire world.

The Sun is a symbol of the higher Self, the Atman or Purusha of yogic thought. This Vedic religion of light is a religion of consciousness, which is the supreme form of light.

Yoga has now been known across the globe. Yoga well known for postures but they were not a key part of  the original Yoga traditions in Bharath (India). The primary reason for yoga is for expanding spiritual energy using breathing methods and mental focus. The tradition began to gain popularity in the West at the end of the 19th century.

Different scientists and different theories says different calculations over the internet. They say around 13.8 billion years or so. Is that correct? Let’s see the calculation

Kruta Yuga – 17,28,000 or 1,728,000 i.e 1.728 million years
Treta Yuga – 12,96,000 or 1,296,000 i.e 1.296 million years
Dwapara Yuga – 8,64,000 or 864,000 or 0.864 million years
Kali Yuga – 4,32,000 or 4,32000, or 0.432 million years

Total is 4.32 million human years.
This 4 yugas together called Chaturyuga or 1 maha yuga
71 Chaturyugas  = 1 Manvantara (306.72 Million human years)
14 Manvantaras = 1 Kalpa (4294.08 Million human years
1 Kalpa = 1 day of Brahma
2 Kalpa = 1 day + 1 night of Brahma (8.58 billion human years)
1 year of Bramha = 360 * 8.58billions human years = 3.088 trillion years
Current age of Bramha is around 50 years and
so the universe is 3.088 x 50 = 154.440 trillions years approx.

Vedas knows the scientific cause of the eclipse, its impact, and when it would occur.(Rig Vedam 5.40.5)

It’s only our great Bharath (Indian) astrology can tell you for many number of coming years on which day the eclipse is going to happen and where all it is visible. The Jyothisha is one of the 6 Vedangams.

Our ancients have a very advanced calculation system through which they can predict where the starts will be moving, when the eclipse will happen and which all places it will have impact on, and what to do and what not to do during the eclipse period.