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On January 4, 2017, Psyche was selected for the 14th Discovery mission, with launch set for 2023. [12] In May 2017, the launch date was moved up to target a more efficient trajectory, to July 2022 aboard a SpaceX Falcon Heavy launch vehicle with a January 31, 2026 arrival, following a Mars gravity assist on May 23, 2023. [13]
This list of exoplanets discovered in 2023 is a list of confirmed exoplanets that were first reported in 2023. For exoplanets detected only by radial velocity, the listed value for mass is a lower limit. See Minimum mass for more information. Name Mass (M J) Radius (R J) Period (days) Semi-major axis (AU) Temp. (K) Discovery method Distance (ly) Host star mass (M ☉) Host star temp. (K ...
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
NASA launched the Psyche spacecraft on 13 October 2023, an orbiter mission that will explore the origin of planetary cores by studying the metallic asteroid 16 Psyche, on a Falcon Heavy launch vehicle. On November 1, NASA's Lucy probe performed a flyby of asteroid 152830 Dinkinesh, revealing it to be a binary pair. [3] [4]
NASA released the draft of the Announcement of Opportunity New Frontiers 5 on January 10, 2023. [44] On August 24, 2023, NASA announced that due to budgetary constraints enacted through the Fiscal Responsibility Act of 2023, the official release of the Announcement of Opportunity for New Frontiers 5 would be delayed to no earlier than 2026. [45]
TOI-715 is a red dwarf star located 42 parsecs (140 ly) from the Earth in the constellation Volans, [note 1] very close to the southern celestial pole. [4] The star is smaller and cooler than the Sun and has an apparent magnitude of 16.7 and is too faint to be seen with the naked eye or even a small telescope.
GJ 1214 b (sometimes Gliese 1214 b, [6] also named Enaiposha since 2023 [2]) is an exoplanet that orbits the star GJ 1214, and was discovered in December 2009. Its parent star is 48 light-years (15 pc) from the Sun, in the constellation Ophiuchus. At the time of its discovery, GJ 1214 b was the most likely known candidate for being an ocean planet.
On 1 November 2023, Lucy successfully flew by its first target, the main-belt asteroid 152830 Dinkinesh, at a relative speed of 4.5 km/s (2.8 mi/s). [59] On the following day, NASA released images from the flyby and announced the discovery of a small satellite orbiting Dinkinesh. [60]