astronomer

Everyday

1. An astronomer is a scientist who studies the stars, planets, moons, comets, galaxies and everything else in space. tree →
2. An amateur astronomer is a person who watches the night sky as a hobby, often with a telescope. tree →

In the lessons

In science lessons famous astronomers include Galileo, who used an early telescope to see the moons of Jupiter, and Copernicus, who said the Earth goes round the Sun. Astronomers use telescopes, satellites and computers. Children can be amateur astronomers by spotting constellations and the Moon's phases.

Examples

• An astronomer studies the stars and planets. tree →
• Galileo was a famous Italian astronomer. tree →
• The astronomer looked through a giant telescope. tree →
• Astronomers have found planets around other stars. tree →
• My uncle is an amateur astronomer with his own telescope. tree →
• Astronomers named the new comet after its discoverer. tree →
• The astronomer explained why the Moon changes shape. tree →
• I want to be an astronomer when I grow up. tree →
• AN ASTRONOMER used to go out at night to observe the stars. tree →

Note

Countable: an astronomer («an» before a vowel sound). Subject: astronomy; adjective: astronomical (also informal for «huge»: «astronomical prices»). Trap: an astrologer claims stars tell your future — that is not science; an astronomer is a real scientist. An astronaut travels into space.

In Jewish tradition

Interpretation: Sefer Yetzirah names the "Teli" (dragon) and the planets, and astronomers have discussed what they mean. The writers here explain those names by the star-watchers of their day. In the primary lessons: In science lessons famous astronomers include Galileo, who used an early telescope to see the moons of Jupiter, and Copernicus, who said the Earth goes round the Sun. Astronomers use telescopes, satellites and computers. Children can be amateur astronomers by spotting constellations and the Moon's phases.

Examples

• astronomers signified by the word Tali, not the constellation Draco, but the line which joins together the two points in which the orbit of the moon intercepts the ecliptic (Dragon's head and tail). (Sefer Yetzirah, Kalisch 1877) tree →
• Astle, The Origin and Progress of Writing, London 1784, p. 41: rhu!', IX, 354, 439). <)r he could have meant Jewish astronomers like JIashallah, who was called by Abraham ibn Eira an Indian sage (mr; Din) (see M. (Mordell, The Origin of Letters and Numerals according to Sefer Yetzirah (1914)) tree →

Note

Countable: an astronomer («an» before a vowel sound). Subject: astronomy; adjective: astronomical (also informal for «huge»: «astronomical prices»). Trap: an astrologer claims stars tell your future — that is not science; an astronomer is a real scientist. An astronaut travels into space.