Dr Mikko Tuomi, who originally discovered the planet, said: "The ability to directly image a planet greatly increases our ability to understand its characteristics and increase the potential for possible exploration in future, helping astronomers discover more about the planets that lie beyond our solar system".
An artist's impression of Barnard's star b. For this reason, life on its surface is unlikely to exist - the typical temperature on the surface do not exceed minus 170 degrees Celsius. Aside from the Alpha Centauri system, it is the closest star to the Solar system.
"Tantalisingly, super-Earths like Barnard's Star b probably sustain geothermal activity for longer than their lower mass counterparts". For that reason, the exoplanet is deemed a "candidate", rather than a confirmed discovery.
 The facilities used in this research were: HARPS at the ESO 3.6-metre telescope; UVES at the ESO VLT; HARPS-N at the Telescopio Nazionale Galileo; HIRES at the Keck 10-metre telescope; PFS at the Carnegie's Magellan 6.5-m telescope; APF at the 2.4-m telescope at Lick Observatory; and CARMENES at the Calar Alto Observatory.
"The chances of finding new ones is quite high", he said.
Tiny wobbles allow scientists to pinpoint new planets. This is because it's moving quickly in relation to the sun, and it's the nearest single star in the sky to us, Butler said.
It is outside the habitable zone at a distance exceeding the so-called "snow border", where liquid water can not exist and has no chance at life.
An worldwide team discovered a frozen Super-Earth orbiting the second closest star system or the closest single star to our own Sun, according to a study published on Wednesday in the journal Nature. Proxima Centauri is the closest star to have a known exoplanet in orbit, Proxima Centauri b. The study found that at its distance from its star, any water on the planet would be frozen. This effect causes the star's velocity to change only minutely, but it can be enough to single out an orbiting planet.
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Scientists took two decades to confirm the existence of Barnard's Star b.
Barnard's Star b orbits its host at a distance of 60 million kilometres. Knowing that we have one of these odd exoplanets so nearby could allow us to get to know this planetary species a little better.
It is the first time such a small planet that sits so far from its star has been found using radial velocity technique.
As the star moves towards the Earth its spectrum appears slightly shifted towards the blue and, as it moves away, it is shifted towards the red.
The magnitude of the wobble reveals the minimum mass of the planet that is responsible for the motion.
Every time GAIA observes Barnard's Star, it measures its location with a precision far greater than any previous observatory could manage.
"The new planet is impossible for Peter van de Kamp to have detected". They watched for small counter movements in the star that indicate a massive body (a planet) is in orbit.
Astronomers described their discovery of Barnard's star in a paper published Wednesday in the journal Nature. A clear signal at a period of 233 days arose again and again. We don't want another van de Kemp scenario. These observations have included exoplanet searches, but nothing about the system stood out. "This is going to be one of the best candidates", says astronomer Nikku Madhusudhan of the University of Cambridge in the United Kingdom, who was not part of the discovery team.