Johannes Kepler's Astronomia Nova, published in 1609, was the oldest book available in the archives. It contains the results of Kepler's ten-year-long investigation of the motion of Mars. Where previous astronomers had relied on geometric models to explain the observed positions of the planets, Kepler discovered physical causes for planetary motion. Before Kepler, Nicolaus Copernicus proposed in 1543 that the Earth and other planets orbit the Sun. Kepler was the first astronomer to prove this conjecture with rigorous scientific arguments. This Volume has 336 pages and is in fairly good condition.

Astronomical observations made at the honorable The East India Company's Observatory at Madras under the superintendence of John Goldingham, Vol. III

Astronomical observations made at the honorable the East India Company's Observatory at Madras under the superintendence of John Goldingham, Vol. IV

Astronomical observations made at the honorable the East India Company's Observatory at Madras in the year 1843-1847 together with the recomputation of the Sun and Moon and planetary observations since 1831.

The fond contains 3 books of Astronomical observations made at the honorable the East India Company's Observatory at Madras

Result of astronomical observations made at the honorable, the East India Company's Observatory at Madras, for the year 1843 and 1835.

Result of astronomical observations made at the honourable, the East India Company's Observatory at Madras

Result of astronomical observations made at the honourable, the East India Company's Observatory at Madras, for the year 1832 and 1833.

Result of astronomical observations made at the honorable, the East India Company's Observatory at Madras.

Result of astronomical observations made at the honourable, the East India Company's Observatory at Madras.