 | Hydra is a natural satellite of Pluto, with a diameter of approximately 51 km (32 mi) across its longest dimension. It is the second-largest moon of Pluto... 26 KB (2,599 words) - 00:30, 6 May 2024 |
Cnidaria Hydra or The Hydra may also refer to: Hydra (constellation) Hydra (moon), a satellite of Pluto Hydra (chess), a chess computer Hydra (digital... 5 KB (704 words) - 15:31, 8 April 2024 |
 | officially named these moons Nix (or Pluto II, the inner of the two moons, formerly P 2) and Hydra (Pluto III, the outer moon, formerly P 1), on 21 June... 38 KB (3,586 words) - 02:33, 26 April 2024 |
 | its longest dimension. It was discovered along with Pluto's outermost moon Hydra on 15 May 2005 by astronomers using the Hubble Space Telescope, and was... 28 KB (2,605 words) - 07:52, 8 February 2024 |
 | Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees, and also the longest at over 100 degrees. Its southern end borders... 17 KB (1,866 words) - 17:27, 25 March 2024 |
 | the Charon–Pluto orbital period of 6.387 days. With the other moons Nix, Kerberos and Hydra, it forms part of an unusual 1:3:4:5:6 (period ratio) sequence... 20 KB (1,732 words) - 00:27, 26 September 2023 |
Hydra (also known as Hydra: The Lost Island) is a 2009 low-budget monster movie by Andrew Prendergast and Peter Sullivan, which blends elements of horror... 5 KB (571 words) - 16:24, 5 March 2024 |
 | Pluto's moons including Kerberos have very circular orbits with very low orbital inclinations to Pluto's equator. Kerberos orbits between Nix and Hydra and... 21 KB (1,926 words) - 15:18, 10 April 2024 |
| of mass of the system no longer lies within Earth. The other moons of Pluto – Nix, Hydra, Kerberos, and Styx – orbit the same barycenter but they are... 51 KB (5,237 words) - 04:03, 13 May 2024 |
 | Operation Hydra was an attack by RAF Bomber Command on a German scientific research centre at Peenemünde on the night of 17/18 August 1943. Group Captain... 27 KB (3,447 words) - 14:06, 6 May 2024 |