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As of April 2009, 346 exoplanets are listed in the Extrasolar Planets Encyclopaedia. The vast majority have been detected through radial velocity observations and other indirect methods rather than actual imaging.
The first confirmed radial velocity detection was made in 1995, revealing a gas giant planet in a four-day orbit around the nearby G-type star 51 Pegasi.
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What else can I help you with?
What is the name of the first exoplanet discovered?
The first confirmed exoplanet is called 51 Pegasi b. It was discovered on October 6th 1995 by Michel Mayor and Didier Queloz. Note: 51 Pegasi or 51 Pegasi a is the parent star.
What is tha average size of an exoplanet?
The average size of an exoplanet is generally larger than Earth but smaller than gas giants like Jupiter. Most exoplanets discovered so far have a size between that of Earth and Neptune.
Is mercury an exoplanet?
No. An exoplanet is a planet outside of our Solar System.
Are one of Jupiter moons an exoplanet?
No. A moon is not a planet. An exoplanet is aplanet that orbits a star other than the sun.
What is the difference between exoplanet and extrasolar planet?
Both exoplanet and extrasolar planet are planets that are outside the solar sysytem.
What is the name of the first exoplanet discovered?
The first confirmed exoplanet is called 51 Pegasi b. It was discovered on October 6th 1995 by Michel Mayor and Didier Queloz. Note: 51 Pegasi or 51 Pegasi a is the parent star.
What is the largest exoplanet?
We won't know that until we are sure that we have discovered all of them.
What is the exoplanet discovered in 2010?
There have been 95 exoplanets discovered in 2010. You'll need to be more specific on the question.
How many miles is the exoplanet away from the earth?
which exoplanet is 'THE exoplanet'?
What is tha average size of an exoplanet?
The average size of an exoplanet is generally larger than Earth but smaller than gas giants like Jupiter. Most exoplanets discovered so far have a size between that of Earth and Neptune.
What is the darkest exoplanet?
The darkest exoplanet is "TRES-2B".
Is mercury an exoplanet?
No. An exoplanet is a planet outside of our Solar System.
Is 51 pegasi an exoplanet?
51 Pegasi itself isn't an exoplanet, it's a Sun-like Star. But it does have an Exoplanet orbiting it, 51 Pegasi b (informally named Bellerophon.).
Are one of Jupiter moons an exoplanet?
No. A moon is not a planet. An exoplanet is aplanet that orbits a star other than the sun.
What is the difference between exoplanet and extrasolar planet?
Both exoplanet and extrasolar planet are planets that are outside the solar sysytem.
Can an exoplanet have an exosphere?
Yes. While we know relatively little about the atmospheres of individual expolanets, there is no reason an exoplanet couldn't have an exosphere.
Where did Copernicus make his discovery?
The theory was published in a famous book entitled (in Latin): 'De revolutionibus orbium coelestium', which means, 'On the revolutions of the orbs of the heavens'.
