(astronomy, planetology) A planet which exists outside Earth's solar system.
Used in a Sentence
exoplanet
Definition, parts of speech, synonyms, and sentence examples for exoplanet.
Editorial note
The first exoplanet discovered around a star is given its host star name with ‘b’ appended.
Examples14
Definitions1
Parts of speech1
Quick take
(astronomy, planetology) A planet which exists outside Earth's solar system.
Meaning at a glance
The clearest senses and uses of exoplanet gathered in one view.
Definitions
Core meanings and parts of speech for exoplanet.
noun
(astronomy, planetology) A planet which exists outside Earth's solar system.
Example sentences
The first exoplanet discovered around a star is given its host star name with ‘b’ appended.
The next exoplanet discovered in the same system gets the letter ‘c’ appended and so on.
GJ 1214b might be more like Earth than any other known exoplanet, but given the murky reporting it's hard to tell.
They can't exactly say what the mean surface gravity is, because they don't know how much variation there is in altitude, and whether the exoplanet has a sea level.
Recently verifying its thousandth exoplanet, Kepler data confirm that the most common planet sizes are worlds just slightly larger than Earth.
The first exoplanet orbiting another star like our sun was discovered in 1995.
I'd say the most Earthlike exoplanet discovered so far is CoRoT-7b, discovered a few months ago.
No, they didn't -- getting the absorption spectrum of a transiting exoplanet is an order of magnitude or two beyond the capabilities of present-day instruments.
So that means, a baby could reach the exoplanet, before it dies of old age, on a spaceship travelling 99% the speed of light, which can theoretically built right now.
As far as I am concerned, if I live long enough to get even a blurry image of an exoplanet, I will die happy.
Not saying that getting an image of an exoplanet at all wouldn't be exciting, but I'd die happier if we could land a rover there.
I'm kind of reminded of the discovery of the first exoplanet.
Quote examples
According to one source[1], "The name of a newly discovered exoplanet is dependant on the name of the star which it orbits and also if any other exoplanets orbiting the same host star have been discovered.
Proper noun examples
Exoplanet surveys seem to be suggesting at least one planet per star on average.
Frequently asked questions
Short answers drawn from the clearest meanings and examples for this word.
How do you use exoplanet in a sentence?
The first exoplanet discovered around a star is given its host star name with ‘b’ appended.
What does exoplanet mean?
(astronomy, planetology) A planet which exists outside Earth's solar system.
What part of speech is exoplanet?
exoplanet is commonly used as noun.