1 : of or relating to astronomy astronomical observations. 2 : enormously or inconceivably large or great astronomical numbers an astronomical price.

astronomical Add to list Share. If you lie down on a big field or on a rooftop and look up, the sky is so wide and high, it is astronomical in size — bigger than huge. Astra and aster are the Latin and Greek words for star, and the first four letters of astronomical, a-s-t-r, are a scramble of the word star.

The word ‘astronomy’ comes from a combination of two ancient Greek words: astron, meaning ‘star,’ and omos, meaning ‘arranging.

Of enormous magnitude; immense. An astronomical increase in the deficit.

Here are the top astronomy events to mark on your calendar in 2020:

• Series of supermoons.
• Moon passes in front of Mars.
• Meteor shower drought comes to an end.
• Lunar eclipse on the Fourth of July.
• Jupiter, Saturn to take the spotlight in the summer sky.
• Perseid meteor shower.
• Blue moon to glow in Halloween sky.

extremely large; exceedingly great; enormous: It takes an astronomical amount of money to build a car factory.

One parsec is approximately equal to 3.26 light-years. Proxima Centauri, the nearest known star to earth other than the sun, is about 1.3 parsecs (4.24 ly) away, by direct parallax measurement.

to derive as a conclusion from something known or assumed; infer: From the evidence the detective deduced that the gardener had done it. to trace the derivation of; trace the course of: to deduce one’s lineage.

Adjective. That may be inferred or drawn as a conclusion; deducible; that may be put together from previous knowledge and current evidence.