(1) Titania was discovered in 1787 by the astronomer William Herschel.

(2) Most newly discovered comets seem to originate from an area in space known as the Oort cloud, named after Dutch astronomer Jan Oort.

(3) John Herschel was the son of William Herschel, the astronomer who discovered Uranus.

(4) Wilczynski began his research career as a mathematical astronomer .

(5) The Titan probe was named Huygens in honour of the Dutch astronomer who discovered Titan in 1655.

(6) Kamalakara was an Indian astronomer and mathematician who came from a family of famous astronomers .

(7) We credit the idea that the Earth and other planets orbit the Sun to the medieval Polish astronomer Nicolaus Copernicus.

(8) The author was the astronomer Edmond Halley, who is far better known today for having a famous comet named after him.

(9) The great Danish astronomer Tycho Brahe observed a supernova in 1572.

(10) This makes it the most distant extrasolar planet detected by astronomers to date.

(11) Few astronomers have made so many important contributions to so many different fields in astronomy.

(12) Until 10 years ago, most astronomers did not believe stardust could enter the Solar System.

(13) Such tenets never held back the great Arab astronomers and mathematicians of the Middle Ages.

(14) These galaxies are so young that astronomers can still see a flurry of stars forming within them.

(15) The tools are also helping astronomers measure the rate of birth of stars in extremely red and distant galaxies.

(16) A team of international astronomers has found five new moons orbiting Neptune.

(17) Here, Hubble astronomers have uncovered, for the first time, a population of infant stars.

(18) Galileo wrote to astronomers in other cities and compared their observations with his own.

(19) To overcome this problem, the astronomers devised a new and highly efficient strategy.

(20) Dozens of astronomers came to see the eclipse, but there were thousands and thousands of people outside to watch it.