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Only pulsar with a multiplanetary system, and first exoplanets and multiplanetary system to be confirmed. [121] [122] Star with dimmest apparent magnitude to have a multiplanetary system. Kepler-62: Lyra: 18 h 52 m 51.060 s +45° 20′ 59.507″ 13.75 [123] 990: K2V [123] 0.69: 4925: 7: 5: Planets e and f orbit in the habitable zone. [123] [124 ...
This list of exoplanets discovered in 2025 is a list of confirmed exoplanets that were first reported in 2025. For exoplanets detected only by radial velocity, the listed value for mass is a lower limit. See Minimum mass for more information.
Multiplanetary system with largest mean semi-major axis (planets are farthest from their star) YSES 1: b, c: 1 YSES 1 b and c have a semi-major axis of ~162 and ~320 AU, respectively. [1] Multiplanetary system with smallest range of semi-major axis (smallest difference between the star's nearest planet and its farthest planet) Kepler-42: b, c, d: 1
A microlensing event in the Twin Quasar gravitational lensing system was observed in 1996, by R. E. Schild, in the "A" lobe of the lensed quasar. It is predicted that a 3-Earth-mass planet in the lensing galaxy, YGKOW G1, caused the event. This was the first extragalactic planet candidate announced.
Planetary habitability in the Solar System is the study that searches the possible existence of past or present extraterrestrial life in those celestial bodies. As exoplanets are too far away and can only be studied by indirect means, the celestial bodies in the Solar System allow for a much more detailed study: direct telescope observation, space probes, rovers and even human spaceflight.
This article is a list of notable unsolved problems in astronomy. Problems may be theoretical or experimental. Theoretical problems result from inability of current theories to explain observed phenomena or experimental results. Experimental problems result from inability to test or investigate a proposed theory.
Host star is the brightest star with multiple known transiting Earth-size exoplanets. Another transiting planet in the system is suspected. [40] HD 101581 c: 0.0925 6.21 transit 41.7 0.740 ± 0.087 4675 ± 53 Host star is the brightest star with multiple known transiting Earth-size exoplanets. Another transiting planet in the system is ...
By 2015, they had confirmed more than a thousand exoplanets, [note 1] while several thousand additional candidates awaited confirmation. [9] To help coordinate efforts to sift through and understand the data, NASA needed a way for researchers to collaborate across disciplines.