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Transiting Exoplanet Survey Satellite (TESS) is a space telescope for NASA's Explorer program, designed to search for exoplanets using the transit method in an area 400 times larger than that covered by the Kepler mission. [6]
Discovered in 2023, TOI-700 e is a terrestrial exoplanet that NASA claims to be an "earth-like" planet, with 95 percent of the Earth’s radius. Discovered by NASA's TESS (Transitioning Exoplanet Survey Satellite), TOI-700 e has a mass of about 0.818 Earths and takes 27.8 days to orbit once around its star. [ 13 ]
The Next-Generation Transit Survey (NGTS) is a ground-based robotic search for exoplanets. [1] The facility is located at Paranal Observatory in the Atacama Desert in northern Chile, about 2 km from ESO's Very Large Telescope and 0.5 km from the VISTA Survey Telescope. Science operations began in early 2015. [2]
The most massive transiting exoplanet is KELT-1b which masses 27.23 M J (making it a brown dwarf) while the least massive is Kepler-42d which masses less than 0.003 M J or 0.9 M E. [2] The largest exoplanet known is HAT-P-32b which is 2.037 R J. The smallest exoplanet known is also Kepler-42d which is 0.051 R J or 0.57 R 🜨.
TOI-715 b is a super-Earth exoplanet in the habitable zone of its parent M-type star, TOI-715. [1] [2] [3] The planet is 1.55 times larger than Earth, and is located at 0.083 astronomical units (12,400,000 km) from its star. [4] The planet orbits in the habitable zone of its star and has an equilibrium temperature of 234 K (−39 °C). [4]
TOI-2119 is a binary star system composed of a M-type main sequence star and a brown dwarf, discovered by the Transiting Exoplanet Survey Satellite (TESS) in 2020 and announced in 2022. [7] [5] It became the first example of a brown dwarf orbiting an M-dwarf to have the obliquity of the system measured using the Rossiter–McLaughlin effect. [4]
Today, transit photometry is the leading form of exoplanet discovery. [5] As an exoplanet moves in front of its host star there is a dimming in the luminosity of the host star that can be measured. [6] Larger planets make the dip in luminosity more noticeable and easier to detect.
The planet was found using data from the NASA Kepler Space Telescope, K2, and the Transiting Exoplanet Survey Satellite.K2-415b was discovered in February 2023. [2]K2-415b is approximately 1.015 times the radius of Earth and is less than 7.5 times the mass of Earth.