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"Houston Space Center Is Named for Johnson". The New York Times. p. 19. Nixon, Richard M. (February 19, 1973). "50 – Statement About Signing a Bill Designating the Manned Spacecraft Center in Houston, Texas, as the Lyndon B. Johnson Space Center"
Solar System space probes operational as of November 2024. This is a list of active space probes which have escaped Earth orbit.It includes lunar space probes, but does not include space probes orbiting at the Sun–Earth Lagrangian points (for these, see List of objects at Lagrangian points).
As of 2022, the precise location of the Solar System in the clouds is an open question in astronomy. [259] Within 10 light-years of the Sun there are relatively few stars, the closest being the triple star system Alpha Centauri, which is about 4.4 light-years away and may be in the Local Bubble's G-Cloud. [260]
Saturn is the sixth planet from the Sun and the second largest in the Solar System, after Jupiter. It is a gas giant , with an average radius of about nine times that of Earth . [ 27 ] [ 28 ] It has an eighth the average density of Earth, but is over 95 times more massive.
Space Center Houston is a science museum that serves as the official visitor center of NASA Johnson Space Center in Houston, Texas. It was designated a Smithsonian Affiliate museum in 2014. The organization is owned by NASA, and operated under a contract by the nonprofit Manned Spaceflight Education Foundation, a 501(c)(3) organization.
The Solar and Heliospheric Observatory (SOHO) in a halo orbit around L1 Mission: Investigation of the outer layer of the Sun, making observations of solar wind and associated phenomena in the vicinity of L1, probing the interior structure of the Sun. Launched: 2 December 1995; Arrival: Operational orbit in May 1996; Institution: ESA
The location of the celestial poles of some selected Solar System objects is shown in the following table. [1] The coordinates are given relative to Earth's celestial equator and the vernal equinox as they existed at J2000 (2000 January 1 12:00:00 TT ) which is a plane fixed in inertial space now called the International Celestial Reference ...
The horizontal, or altitude-azimuth, system is based on the position of the observer on Earth, which revolves around its own axis once per sidereal day (23 hours, 56 minutes and 4.091 seconds) in relation to the star background. The positioning of a celestial object by the horizontal system varies with time, but is a useful coordinate system ...