## Who made the most accurate measurement of the position of the planets?

There, from 1600 until his death in 1601, he was assisted by Johannes Kepler, who later used Tycho’s astronomical data to develop his three laws of planetary motion….

Tycho Brahe
Occupation Nobleman, astronomer, writer
Known for Tychonic system Rudolphine Tables
Spouse(s) Kirsten Barbara Jørgensdatter
Children 8

## What are achievements of Indian astronomers?

In a landmark achievement in Space missions, Indian Astronomers have discovered one of the farthest Star galaxies in the universe. In a landmark achievement in Space missions, Indian Astronomers have discovered one of the farthest Star galaxies in the universe.

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What did Chinese astronomers discover?

The polymath Chinese scientist Shen Kuo (1031–1095 CE) was not only the first in history to describe the magnetic-needle compass, but also made a more accurate measurement of the distance between the pole star and true north that could be used for navigation.

### How did Tycho Brahe measure?

Tycho Brahe, a Dane, worked from ~ 1570 – 1601 and built the most accurate naked eye observatory ever. He was able to measure angles and hence positions of stars to an accuracy approaching 1 arcmin, equivalent to 1/30 the diameter of the full moon.

### Did Tycho Brahe use a telescope?

The Danish king gave Brahe the Island of Hveen to pursue his work. Without benefit of a telescope, Brahe used armillary spheres that were able to physically represent a model of the sky and develop celestial maps of planetary movement. Brahe created detailed mathematical tables that astronomers used for centuries.

What brahmagupta invented?

Brahmagupta (ad 628) was the first mathematician to provide the formula for the area of a cyclic quadrilateral. His contributions to geometry are significant. He is the first person to discuss the method of finding a cyclic quadrilateral with rational sides.

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#### What did Indian astronomers have to do every five years?

Every 5 years, two intercalary periods were added to bring the calendar back in line with the solar year, ensuring that years averaged 366 days.

#### Who was the first astronomer in India?

Aryabhata, also called Aryabhata I or Aryabhata the Elder, (born 476, possibly Ashmaka or Kusumapura, India), astronomer and the earliest Indian mathematician whose work and history are available to modern scholars.

Why are there 28 lunar mansions in the Chinese constellations?

The Twenty-Eight Mansions (Chinese: 二十八宿; pinyin: Èrshíbā Xiù), hsiu, xiu or sieu are part of the Chinese constellations system. They can be considered as the equivalent to the zodiacal constellations in Western astronomy, though the Twenty-eight Mansions reflect the movement of the Moon through a sidereal month rather …

## What is the oldest astronomy book in India?

Indian and Greek astronomy. The earliest known Indian astronomical work (though it is restricted to calendrical discussions) is the Vedanga Jyotisha of Lagadha, which is dated to 1400–1200 BCE (with the extant form possibly from 700–600 BCE).

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## Who introduced Indian concept of mathematics based astronomy into the Arab world?

His works introduced Indian concept of mathematics based astronomy into the Arab world. He also theorized that all bodies with mass are attracted to the earth. Varāhamihira was an astronomer and mathematician who studied and Indian astronomy as well as the many principles of Greek, Egyptian, and Roman astronomical sciences.

Which of the following is the earliest Indian text on astronomy?

Thus, the Shulba Sutras, texts dedicated to altar construction, discusses advanced mathematics and basic astronomy. Vedanga Jyotisha is another of the earliest known Indian texts on astronomy, it includes the details about the Sun, Moon, nakshatras, lunisolar calendar.

### What is the Vedic text about astronomy?

The earliest astronomical text—named Vedānga Jyotiṣa details several astronomical attributes generally applied for timing social and religious events. The Vedānga Jyotiṣa also details astronomical calculations, calendrical studies, and establishes rules for empirical observation.