Ancient Hindu scriptures say that the universe is approx. over 8.64 billion years (current scientific estimate ~13 billion years – obviously scientific error can creep in here) also considering these ideas were thought of over 5000-7000 years ago, it’s probably the closest any religion has ever got to the scientific estimate (and much closer than the 6000year chistian estimate – or whatever their estimate is).
Hindu scriptures say: “The universe is a cosmic egg that cycles between expansion and total collapse. It expanded from a concentrated form –a point called a Bindu. The universe, as a living entity, is bound to the perpetual cycle of birth, death, and rebirth”
Scientists kind of confirm that the universe started from a point called the “Big Bang” and that the universe “cycles between expansion and collapse”. Although as of yet we do not know whether the universe will continue to expand or collapse as we still have a long way to go before we find out, but the universe is currently expanding.
Also Hindu scriptures say there are about 4 lakh (400,000) species of plants etc. and science and biology states that there are around 385,000 species (obviously there would be some species that have not been identified yet).
If you research and closely study Ancient Hindu scriptures, they actually mention evolution long before Darwin’s “Origin of Species”.
Sushruta is regarded as the Father of Surgery. Over 2600 years ago Sushrata & his team conducted complicated surgeries like cataract, artificial limbs, cesareans, fractures, urinary stones, plastic surgery and brain surgeries.
Usage of anaesthesia was well known in ancient Indian medicine. Detailed knowledge of anatomy, embryology, digestion, metabolism,physiology, etiology, genetics and immunity is also found in many ancient Indian texts.
Bhaskaracharya rightly calculated the time taken by the earth to orbit the Sun hundreds of years before the astronomer Smart. According to his calculation, the time taken by the Earth to orbit the Sun was 365.258756484 days.
The value of “pi” was first calculated by the Indian Mathematician Budhayana to 28 decimal places (currently computers can only calculate to 16 decimal places), and he explained the concept of what is known as the Pythagorean Theorem. He discovered this in the 6th century, long before the European mathematicians.
Algebra, Trigonometry and Calculus also originated in India.Quadratic Equations were used by Sridharacharya in the 11th century. The largest numbers the Greeks and the Romans used were 106 whereas Hindus used numbers as big as 10*53 (i.e. 10 to the power of 53) with specific names as early as 5000 B.C.during the Vedic period. Even today, the largest used number is Terra: 10*12(10 to the power of 12).
There are also many other scientific examples in the Vedic scriptures which would take me all day to list but a few more examples:
Nuclear Physics in 3rd Century BC The smallest of them is called
Paramaanu which nearly equals one billionth part of a meter. This value tallies with the size of an organic molecule calculated by the western scientists.
Velocity of light as 325,940km/s in the Rig Veda was an approximation and much closer compared to what the Danish astronomer Ole Roemer gave in 1676 of 21,500km/s (Current scientific answer: 299,792.458 km/s)
Many ancient Sanskrit texts on Flight and Aircraft: The Yantra Sarvaswa of Maharshi Bharadwaja, Vimaana Chandrika of Maharshi Narayan, Vyoma Yaana Tantra of Sounaka, and Vyoma Yaanarka of Dandi Natha are some of them. They contained topics like Maargadhi Karana (Navigation and control of speed during flight), Lohaadhi Karana (alloys used for various components of
the aircraft) etc.