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Proxima Centauri
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Proxima Centauri is the nearest star to Earth after the Sun, located 4.25 light-years away in the southern constellation of Centaurus. Discovered in 1915 by Robert Innes, it is a small, low-mass star,
False color Hubble Space Telescope WFPC2 image taken in 2013. The bright lines are diffraction spikes.
False color Hubble Space Telescope WFPC2 image taken in 2013. The bright lines are diffraction spikes.
Alpha Centauri A and B are the bright apparent star to the left, which are in a triple star system with Proxima Centauri, circled in red. The bright s
Alpha Centauri A and B are the bright apparent star to the left, which are in a triple star system with Proxima Centauri, circled in red. The bright star system to the right is the unrelated Beta Centauri.
Orbital plot of Proxima Centauri around the bright apparent star Alpha Centauri AB, with position change marked (in thousands of years).
Orbital plot of Proxima Centauri around the bright apparent star Alpha Centauri AB, with position change marked (in thousands of years).
Schematic of the three planets (d, b, and c) of the Proxima Centauri system, with the habitable zone highlighted in green
Schematic of the three planets (d, b, and c) of the Proxima Centauri system, with the habitable zone highlighted in green
Proxima Centauri b
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Proxima Centauri b is an exoplanet orbiting within the habitable zone of the red dwarf star Proxima Centauri in the constellation Centaurus. It can also be referred to as Proxima b, or Alpha Centauri
Artist's conception of Proxima Centauri b as a terrestrial exoplanet, with Proxima Centauri and the Alpha Centauri system visible in the background. T
Artist's conception of Proxima Centauri b as a terrestrial exoplanet, with Proxima Centauri and the Alpha Centauri system visible in the background. The actual appearance and composition of the exoplanet beyond this data is currently unknown.
Velocity of Proxima Centauri towards and away from the Earth as measured with the HARPS spectrograph during the first three months of 2016. The red sy
Velocity of Proxima Centauri towards and away from the Earth as measured with the HARPS spectrograph during the first three months of 2016. The red symbols with black error bars represent data points, and the blue curve is a fit of the data. The amplitude and period of the motion were used to estimate the planet's minimum mass.
Overview and comparison of the orbital distance of the habitable zones of Proxima Centauri compared to the Solar System
Overview and comparison of the orbital distance of the habitable zones of Proxima Centauri compared to the Solar System
Artist's conception of the surface of Proxima Centauri b. The Alpha Centauri AB binary system can be seen in the distance, to the upper right of Proxi
Artist's conception of the surface of Proxima Centauri b. The Alpha Centauri AB binary system can be seen in the distance, to the upper right of Proxima, as two white dots.