11 sentences with “astronomer”

The astronomer observed the stars and constellations in the night sky.

The astronomer discovered a new planet that could harbor extraterrestrial life.

The most influential ancient sources of scientific knowledge were Ptolemy, a Greek astronomer and mathematician, and Aristotle.

In 1930 Pluto was observed by astronomer Clyde Tombaugh of the Lowell Observatory in Flagstaff, Arizona, USA. Tombaugh immediately proclaimed it the ninth planet.

From Earth, telescopes gave us so much information about Saturn's rings that we were able to distinguish "boundaries" between each of them. The first to do so, back in the 17th century, was the French astronomer Jean Dominique Cassini.

Another astronomer named Hipparchus created the first star charts that included precise positions of the stars over the course of the year, and to help keep track of their positions he created the first system of longitudes and latitudes.

A German astronomer, Johannes Kepler (1571 - 1630), who had been Brahe's assistant late in his life, ended up using Brahe's data to argue against Brahe's conclusion, showing that the data actually proved that the sun was indeed at the centre of the universe.

That day was the 300th anniversary of the death of Galileo, the Italian mathematician and astronomer who revolutionised astronomy and was persecuted by the Inquisition for arguing that the sun is the centre of our planetary system, not the earth, as ancient astronomers believed.

According to unbelievers, any prayer is foolishness. In the book The Demon-Haunted World: Science As a Candle in the Dark, written a year before his death, astronomer Carl Sagan included prayer among practices that he believed illustrate the persistence of irrationality, such as astrology, telekinesis, witchcraft and ESP.

A Danish astronomer named Tycho Brahe (1546 - 1601) attempted to disprove the theory of heliocentrism by publishing a massive work of astronomical observations and corresponding mathematical data that attempted to show that the Earth was indeed at the centre of the universe but that celestial bodies followed monstrously complex orbits.

During his time at Oxford, Stephen Hawking took a summer course at Greenwich Royal Observatory with the then astronomer royal, Sir Richard Woolley, whom he assisted in an investigation of binary stars. However, looking through the telescope and seeing just a couple of indistinct blobs, he became convinced that theoretical cosmology was much more interesting.