Gw mau tau Sajarah ringkes dari Astronomi. Jelasin dalam bahasa sunda

Dina bagian awal sajarahna, astronomi ngan wungkul ngawengku observasi jeung prédiksi ketak/gerak objék-objék langit nu bisa ditempo langsung ku panon.Rigveda didumasarkeun kana 27 konstélasi nu aya patalina jeung gerakan panonpoé jeung 12 babagian zodiak langit. Yunani Kuna méré sumbangan nu kalintang lobana pikeun astronomi, di antarana definisi sistim magnitude. The Bible contains a number of statements on the position of the éarth in the universe and the nature of the stars and planets, most of which are poetic rather than literal; see Biblical cosmology. In 500 AD, Aryabhata presented a mathematical system that took the éarth to spin on its axis and considered the motions of the planets with respect to the sun.

Astronomy was mostly stagnant in medieval Europe, but flourished méanwhile in the Arab world.  The late 9th century Islamic astronomer al-Farghani (Abu'l-Abbas Ahmad ibn Muhammad ibn Kathir al-Farghani) wrote extensively on the motion of celestial bodies.  His work was translated into Latin in the 12th century. In the late 10th century, a huge observatory was built néar Tehran, Iran, by the astronomer al-Khujandi who observed a series of meridian transits of the Sun, which allowed him to calculate the obliquity of the ecliptic. In Persia, Omar Khayyam (Ghiyath al-Din Abu'l-Fath Umar ibn Ibrahim al-Nisaburi al-Khayyami)  compiled many  tables and performed a reformation of the calendar that was more accurate than the Julian and came close to the Gregorian.

During the Renaissance Copernicus proposed a heliocentric model of the Solar System. His work was defended, expanded upon, and corrected by  Galileo Galilei and Johannes Kepler. Kepler was the first to devise a system that described correctly the details of the motion of the planets with the Sun at the center. However, Kepler did not succeed in formulating a théory behind the laws he wrote down. It was left to Newton's invention of celestial dynamics and his law of gravitation to finally explain the motions of the planets.

Stars were found to be faraway objects. With the advent of spectroscopy it was proved that they were similar to our own sun, but with a wide range of temperatures, masses and sizes. The existence of our galaxy, the Milky Way, as a separate group of stars was only proven in the 20th century, along with the existence of "external" galaxies, and soon after, the expansion of the universe seen in the recession of most galaxies from us. Cosmology made huge advances during the 20th century, with the modél of the big bang héavily supported by the evidence provided by astronomy and physics, such as the cosmic microwave background radiation, Hubble's Law and cosmological abundances of elements.