A planet which orbits a star outside the solar system.
太阳系外行星，外行星
most of the 100 known exoplanets are comparable in mass to Jupiter
Example sentencesExamples
Could it be an exoplanet in orbit around that young brown dwarf object at a projected distance of about 8,250 million km?
When astronomers study all those exoplanets and the systems they inhabit, it is natural to look to our own solar system as a template for other planetary systems.
The possible exoplanet is orbiting a star known as GQ Lup, thought to be similar to our own Sun, when it was younger.
Many of these exoplanets are large planets that resemble the gas giants of our solar system: Jupiter, Saturn, Uranus, and Neptune.
Nevertheless, this unique observing technique opens a new phase in the exploration of exoplanets, or extrasolar planets, say astronomers.
Definition of exoplanet in US English:
exoplanet
nounˈeksōˌplanətˈɛksoʊˌplænət
A planet which orbits a star outside the solar system.
太阳系外行星，外行星
most of the 100 known exoplanets are comparable in mass to Jupiter
Example sentencesExamples
When astronomers study all those exoplanets and the systems they inhabit, it is natural to look to our own solar system as a template for other planetary systems.
Nevertheless, this unique observing technique opens a new phase in the exploration of exoplanets, or extrasolar planets, say astronomers.
Could it be an exoplanet in orbit around that young brown dwarf object at a projected distance of about 8,250 million km?
Many of these exoplanets are large planets that resemble the gas giants of our solar system: Jupiter, Saturn, Uranus, and Neptune.
The possible exoplanet is orbiting a star known as GQ Lup, thought to be similar to our own Sun, when it was younger.